highaltitude.log.20140318

[00:01] <g0pai_ian> The bmp sensor breakout board has a temperature sensor associated with it for use in temperature compensating the pressure readings, but it is limited in it's range and seems overly complicated. I would be inclined to read only the uncompensated pressure
[00:01] <g0pai_ian> But it seems that it might be more hassle than it might be worth.
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[00:08] <amell> vk3yt appears to have made the north island now. impressive
[00:09] <amell> battery voltage increasing so guessing it must have solar panels
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[07:48] <nosebleedkt> fsphil: Hi
[07:52] <Maxell> zzz
[08:05] <fsphil> zedzedzed
[08:05] <fsphil> morning nosebleedkt
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[11:42] <DL7AD> good afternoon
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[11:52] <Geoff-G8DHE> Different APJHAB seems to have a wet start rather than a wet finish!
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[13:06] <g0pai_ian> I feel like I'm on the wrong page . . . so silent!
[13:07] <craag> g0pai_ian: We all have to do some work sometimes ;)
[13:09] <Geoff-G8DHE-M> Work ? ! WORK!! I've given it up!
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[13:10] <aadamson> g0pai_ian, did you find the information about the bmp180/085's, they are actually rather easy to use, you will just need to read the temp correction on a 1:4, or 1:5 ratio to correct. They drift *really* bad if you don't
[13:11] <aadamson> there is an arduino library for them that is pretty easy to use
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[13:11] <aadamson> we use them all the time in flight controller for multicopters, now since been replaced with the ms5611, which is a much better sensor
[13:14] <aadamson> mikestir, I got really carried away (sometimes I really hate it when that happens), and fixed the add on usb port for an STM. this one does both usb detect and usb disconnect and is pin protected for 3v3 :) https://dl.dropboxusercontent.com/u/6730484/USB-bob.png
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[13:19] <eroomde> i think measureing the temperature at very low pressures is probably a harder problem than can be solved by all these digital things with simple interfaces
[13:19] <eroomde> i suspect they're just measuring their own temperature, to an extent
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[13:23] <g0pai_ian> aadamson* yes I found the data for the BMP085/189 OK, but seem to think that they seem to have a ceiling of around 12,000m
[13:24] <aadamson> eroomde, yeah it's hard to tell, all the pressure sensors are *termal* based it seems, I'm not sure of the specs on the ms5611, but it's *way* more accurate. I do know that some of the commercial drone companies use the BMP's however
[13:25] <aadamson> it's hard to read the data sheet, but it's good from 300 - 1100 hPa
[13:26] <aadamson> the ms5611 is good for 10 - 1200 mbar
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[13:28] <aadamson> if those numbers are correct and I read the DS right, the ms5611 is only good to 10mbar or 25km, the bmp is only good to 300mbar or 10km
[13:29] <eroomde> for some sensitive astuff on a rocket, we ended up pointing the sensors in an insulated oven
[13:29] <eroomde> and just held the whole thing at 50C
[13:30] <aadamson> I wonder how the freescale sensors compare?
[13:30] <eroomde> boeff
[13:30] <eroomde> i just go bridge
[13:30] <eroomde> then i can do the front end and make it sensitive enough
[13:31] <eroomde> there's a nice jim williams paper where he measures someone's pulse from weighing sclaes, just to make the point
[13:31] <adamgreig> you can measure someone's pulse from a cheap USB webcam video of their face halfway across a room though
[13:31] <Laurenceb__> welcome to my world
[13:31] <adamgreig> pulses are surprisingly strong signals in domains where humans are surprisingly insensitive
[13:31] <adamgreig> lol Laurenceb__
[13:31] <eroomde> sure, but that doesn't ullustrate a point about dynamic range in good bridge signal conditioning circuits
[13:32] <adamgreig> fair
[13:32] <adamgreig> how clear was the pulse?
[13:32] <eroomde> perfectly
[13:32] <adamgreig> one of the phds here is doing a ton of particle filters to extract pulse and breath from a scale on a bed
[13:32] <eroomde> saw the double pulse
[13:33] <aadamson> so fyi, freescale has sensors that go down to 0kpa, granted, you'd have to condition, filter, and determine a scaling on those sensors, but obviously there are sensor packages available
[13:33] <Laurenceb__> what are you trying to do?
[13:33] <aadamson> me, nothing, quest just came up about range on the ms and bmp sensors
[13:34] <Laurenceb__> oh
[13:34] <eroomde> adamgreig: https://www.dropbox.com/s/oi4n87s5cwbfuh2/pulsebridge.png
[13:34] <eroomde> after excercise (top) and at rest
[13:35] <adamgreig> cute
[13:36] <adamgreig> surprisingly low noise
[13:36] <eroomde> he was good
[13:36] <Laurenceb__> the bridge force/strain sensors are amazing
[13:36] <Laurenceb__> its more a case of how good is your interface
[13:37] <eroomde> precsiely
[13:37] <eroomde> this is why a digital pressure sensor is not going to cut it for sensitive hab measurements
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[13:37] <eroomde> it's only/all about signal conditioning
[13:39] <aadamson> for my science question of the day (and trust me I have no clue)... is the gravity constant linear based upon altitude, in other words does the pull of gravity become less on some calulatable scale the further you get away from center earth?
[13:39] <eroomde> yes
[13:39] <eroomde> 1% less at 32km
[13:39] <eroomde> than on the surface
[13:39] <eroomde> worth modelling if you're doing rockoon sims or whatever
[13:39] <aadamson> ah, but it sounds like it's not linear, more logrithmic or something?
[13:40] <eroomde> oh sorry
[13:40] <eroomde> inverse square law
[13:40] <aadamson> I was just wondering if an accelerometer could be used as an altitude prediticting device? :)
[13:40] <eroomde> in theory, yes
[13:40] <aadamson> not doing the acceleration calcs, just measuring the gravity vector
[13:41] <eroomde> though g is not constant around the world, depends on mountains/mantle/whatever
[13:41] <eroomde> sure yes, i understand exactly what you mean
[13:41] <eroomde> in theory it'd work
[13:41] <aadamson> yeah figured as much
[13:42] <aadamson> the problem would be creating a *stable* enough environement to even measure it as it moved.... but it was an interesting thought :)
[13:42] <eroomde> not necessarily
[13:42] <eroomde> you can model the signal you're getting
[13:42] <Laurenceb__> accelerometers are fairly nonlinear and the drift a lot
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[13:43] <eroomde> i.e. if the model has swinging, you can say that the signal you're getting is gravity + swinging + noise
[13:43] <eroomde> and try and estimate all 3 of those quantities
[13:43] <aadamson> I also suppose you could do the opposite and use the accelerometer as it's intended purpose measuring acceleration/time, etc and derive a *distance* traveled from start,
[13:43] <eroomde> and you still get gravity out
[13:43] <eroomde> it's gonna be *way* too noisy to integrate twice
[13:43] <eroomde> assuming it's a mems accelerometer
[13:44] <aadamson> see this is where you *math heads* - make my head hurt :)
[13:44] <eroomde> within 5 minutes of starting it, it'll think you're beyond the orbit of the moon, going at mach 20
[13:44] <aadamson> yeah one of the best, and it's not a mems that we've played with is this one... gotta find alink
[13:44] <eroomde> oh ok
[13:44] <aadamson> http://www.memsic.com/accelerometers/MXR9150MZ
[13:44] <eroomde> well if it's a smart one that might be different
[13:45] <aadamson> it's a low G, non mems (but thermal again) sensor
[13:45] <aadamson> much more accurate and less noisy than say an MPU6000
[13:45] <eroomde> the nice thing you can do is fuse together acceleration, pressure, gyro, gps and whatever measurements all together, into some form of state
[13:45] <aadamson> plus it's analog
[13:45] <aadamson> yeah, we do that in flight control systems
[13:47] <aadamson> anyway to return the channel to it's normal quiet state until you all get home from work... I myself, must entertain that work topic (good thing I'm semi-retired) :)... gotta run, thanks for the few minutes, stimulated my gray matter a bit!
[13:50] <Laurenceb__> The
[13:50] <Laurenceb__> MXR9150G/M design is based on heat convection and
[13:50] <Laurenceb__> requires no solid proof mass.
[13:50] <Laurenceb__> what the heck
[13:50] <Laurenceb__> this sounds epic
[13:50] <Laurenceb__> but its noisy
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[13:52] <Laurenceb__> http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=659830
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[14:04] <fsphil> VK3YT-11 has done rather well for itself
[14:05] <SpeedEvil> Laurenceb__: yeah - those have been around for ages
[14:05] <SpeedEvil> Laurenceb__: one of those 'no way that can possibly work. 'does numbers' 'hmm - really'
[14:06] <LeoBodnar> did VK3YT have solar charger?
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[14:06] <LeoBodnar> 13g assumes 1xAAA
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[14:10] <fiftydollarsat> Question: What sort of hot start re-aquisition time would you expect with a UBLOX 6 or 7 GPS, assuming a suitable voltage on the battery pin and you remove power from the GPS itself.
[14:11] <eroomde> in theory a couple of seconds, though I think some have experienced some wierdness with the ublox 7
[14:12] <fiftydollarsat> Indeed, theory and practice. I have been playing with a MTK3329, which in theory has a hot start of 1 second, in practice its closer to 10.
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[14:14] <myself> that depends on sky view as much as anything. If you really have horizon-to-horizon, it should be very fast, but a constrained view will slow the search down considerably.
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[14:18] <fiftydollarsat> You probably have a point about the horizon, my location is OK for overhead satellite gazing, but no so good for seeing the radio horizon.
[14:18] <eroomde> farnell down for anyone else?
[14:19] <fsphil> ok here
[14:19] <jonsowman> fine here too
[14:19] <eroomde> oh, fine for me again
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[14:24] <LeoBodnar> fiftydollarsat: you get 5-10s lock and weird position jumps
[14:24] <LeoBodnar> and altitude too
[14:25] <fiftydollarsat> Ah, not good. So do people bother to switch the GPS for HAB stuff ?
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[14:25] <LeoBodnar> some do
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[14:26] <LeoBodnar> Tom waits 30 sec after turn on and then gets the fix
[14:26] <LeoBodnar> in the end it's probably the same power-wise as power save mode
[14:27] <LeoBodnar> extreme example: http://leobodnar.com/balloons/B-11/2.png
[14:27] <fiftydollarsat> Well in the same location where I get the 10 sec hot start, cold start fix time is about 35 seconds.
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[14:28] <LeoBodnar> these 10 seconds are very power-hungry vs continuous PSM
[14:28] <fiftydollarsat> LeoBodnar: Not good at all.
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[14:30] <LeoBodnar> Tom waits 30 sec... lol 30 sec of Tom Waits
[14:30] <fiftydollarsat> So in practice, whats typical current consumption in continuous versus PSM
[14:31] <LeoBodnar> power saving mode is sort of continuos vs on-off (with hot restart)
[14:32] <LeoBodnar> they are roughly equivalent if you turn on and off every 2 min or so
[14:32] <LeoBodnar> for longer periods between fixes on-off is more efficient
[14:33] <LeoBodnar> for shorter on-off will be worse because of the increase current during hot start
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[14:34] <myself> But power save mode is managed by the GPS chipset which presumably has some clue about when is a good time to snooze and when it should wake up again
[14:35] <LeoBodnar> yes
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[14:35] <LeoBodnar> it usually wakes up when you don't want it to
[14:37] <fiftydollarsat> Interesting. Typical I for the MTK3329 is 43mA, no power save modes I am aware off.
[14:37] <eroomde> that's horrendous
[14:37] <eroomde> by modern standards
[14:37] <fiftydollarsat> For a PICO balloon, what sort of battery duration would you plan for ?
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[14:39] <eroomde> i think getting 2 days from an AAA is not unreasonable. someone will correct me if i'm wrong
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[14:47] <fiftydollarsat> 2 days from a AAA is not bad.
[14:47] <mfa298> if it's aprs and shuting gps and radio down most of the time that 48hrs doesn't sound unreasonable.
[14:47] Action: mfa298 tries to remember what Leo's early flights did
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[14:55] <fiftydollarsat> I was thinking RFM22 for a PICO,
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[14:57] <Maxell> hehe, nice old mailinglist fwd
[15:04] <navrac_work> they used to be very common for pico's a couple of years ago. But the drift and failing when warming up got to be a bit boring
[15:11] <fiftydollarsat> I have seen the comments about RFM22s failing on heating, not seen the problem myself, I would suspect condensation.
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[15:48] <Laurenceb__> what happened to VK3YT ?
[15:48] <Laurenceb__> out of range?
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[17:18] <malgar> UpuWork: Upu: query
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[17:21] <UKC_WTM5> Would anyone know why I stopped receiving a signal in dl-fldigi? I am using a rtl-sdr receiver
[17:21] <UKC_WTM5> SDRsharp: http://maarseveent.com/private/sdr.png
[17:21] <UKC_WTM5> dl-fldigi: http://maarseveent.com/private/digi.png
[17:21] <UKC_WTM5> SDRsharp seems to receive the signal fine
[17:21] <UKC_WTM5> so I'm guessing it's one of my settings in dl-fldigi
[17:22] <UKC_WTM5> All I get is blue on my waterfall, this is classified as bg noise if im not mistaken?
[17:22] <malgar> I think that you haven't the right audio input to dl-fldigi enabled
[17:23] <malgar> did it never work?
[17:23] <malgar> or is it suddently stopped?
[17:23] <UKC_WTM5> it was working before, but it was always blue for some reason
[17:24] <UKC_WTM5> just makes it very hard to find unless i use the filter in sdr#
[17:24] <UKC_WTM5> but now i cant get it to work at all
[17:24] <UKC_WTM5> http://maarseveent.com/private/audiosettings.png
[17:25] <malgar> you have to change the audio settings in dl-fldigi
[17:25] <UKC_WTM5> http://maarseveent.com/private/audiodigi.png
[17:25] <Upu> hi malgar here now
[17:25] <UKC_WTM5> to this rigth?
[17:25] <UKC_WTM5> right*
[17:25] <malgar> Upu: I attached the gps board and the transmitter ntx2b to arduino but when I give power to the gps, I got a frequency shift in the transmitter and dl-fldigi writes just garbage
[17:25] <malgar> power issue?
[17:26] <malgar> Upu: ala the output sound seem quite distorted
[17:26] <malgar> also
[17:26] <Upu> how are you driving TXD on the NTX2
[17:26] <Upu> one issue at once
[17:27] <malgar> I used the circuit in the wiki
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[17:27] <Upu> link ?
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[17:27] <malgar> http://www.ukhas.org.uk/guides:linkingarduinotontx2
[17:27] <malgar> Upu: it works perfectly if I don't use the gps
[17:28] <Upu> oh
[17:28] <Upu> software serial on the GPS ?
[17:29] <malgar> no, and the gps output on the monitor is perfect nmea
[17:29] <Upu> odd
[17:29] <malgar> gps alone: ok
[17:29] <malgar> ntx2 alone: ok
[17:29] <malgar> gps+ntx2: garbage
[17:29] <Steffanx> im not into the details of dl-fldigi on windows, but could it be you turned the volume down UKC_WTM5 ?
[17:29] <Upu> does sound power related or something in the code is messing with the timing
[17:29] <Upu> Are you about later ?
[17:29] <malgar> Upu: I think that it is power related
[17:30] <Upu> We can have a look at it but I need to do some stuff now
[17:30] <malgar> Upu: not earlier than 22:00 CEST
[17:30] <UKC_WTM5> Steffanx: It's at full volume... is there no way to bypass SDR# and input rtl-sdr directly into dl-fldigi?
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[17:30] <Upu> ok if you can check current usage
[17:30] <Upu> back later
[17:31] <Steffanx> afaik you have to use tools like SDR# UKC_WTM5
[17:31] <UKC_WTM5> malgar: you sure you are connecting it to a PWM pin?
[17:31] <mfa298> UKC_WTM5: it looks like not enough audio getting to dl-fldigi - the diamond bottom right should be green
[17:31] <UKC_WTM5> hmmm okay
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[17:32] <UKC_WTM5> it must be somewhere in my setup, ive done this on 2 different machines and gott he same result
[17:32] <malgar> UKC_WTM5: it is not PWM because I use a voltage divider
[17:32] <mfa298> UKC_WTM5: there are a few SDR programs but sdr# is probably the easiest to ues (others are v2.sdr-radio and hdsdr)
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[17:33] <malgar> mfa298: I use gqrx.. it works fine
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[17:33] <mfa298> UKC_WTM5: check the the setting on the virtual audio cable program your using
[17:34] <mfa298> malgar: gqrx probably won't help here as it looks like UKC_WTM5 is using windows not linux/mac)
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[17:34] <UKC_WTM5> Cheers, I'm going to try a different virtual audio jack and report back in 5 mins
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[17:35] <mfa298> UKC_WTM5: if you're only tracking one payload you could also try outputing to speakers and get dl-fldigi to listen to stereo mix (although that may take a bit of playing in the sound settings to get it working)
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[17:36] <mfa298> stereo mix isn't enabled in all drivers and I usually isn't on by default (I think)
[17:36] <Willdude123> Off to France tomorrow - decided not to take radio (to listen to marine band)
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[17:48] <UKC_WTM5> Replaced virtual audio driver - same result... hmmm
[17:48] <UKC_WTM5> still a blue waterfall
[17:48] <UKC_WTM5> mfa298: might give that a try
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[17:54] <UKC_WTM5> this is using a male to male audio cable, speakers to mic: http://maarseveent.com/private/male-to-male-audio-cable.png
[17:54] <UKC_WTM5> (1 second still uploading)
[17:54] Action: Reb-SM3ULC watching HABing on swedish childchannel.
[17:54] <UKC_WTM5> okay thats uploaded
[17:59] <UKC_WTM5> http://maarseveent.com/private/notsure.png
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[18:01] <UKC_WTM5_> Sorry, got disconnected! http://maarseveent.com/private/notsure.png
[18:01] <UKC_WTM5_> test test
[18:04] <UKC_WTM5_> Diamong in my dl-fldigi goes red now
[18:04] <UKC_WTM5_> Diamond*
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[18:06] <UKC_WTM5_> Right so I adjusted the volume and the diamond in the bottom is now green
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[18:06] <UKC_WTM5_> but only shows up with 1 of the lines, even though both are shown in SDR#
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[18:32] <UKC_WTM5_> Does anyone know how to increase the filter bandwidth past 1000 in dl-dldigi? my shift seems to be really big for some reason
[18:32] <daveake> Best to fix the transmitter
[18:33] <daveake> If the shift is really wide and your Tx drifts during flight, it'll need the listeners to frequently re-tune
[18:34] <malgar> UKC_WTM5_: where are you from?
[18:34] <UKC_WTM5_> daveake: Right, so do you reckon this is a software problem?
[18:35] <UKC_WTM5_> malgar: Amsterdam, operating from Canterbury at the moment though
[18:35] <daveake> Dunno. What transmitter?
[18:35] <UKC_WTM5_> NTX2B
[18:35] <daveake> Your resistor network has the wrong values then
[18:36] <UKC_WTM5_> Damn, okay I'll have a look at that
[18:36] <edusupport> UKC_WTM5 I had the same problem the first time I built a transmitter I ha a totally wrong value for one of the resistors
[18:36] <UKC_WTM5_> Thanks for that
[18:36] <UKC_WTM5_> ah okay, im going to double check that now, that would probably be the problem then
[18:36] <edusupport> As daveake has just said :)
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[18:38] <UKC_WTM5_> Found the resistor values on the datasheet :) cheers
[18:39] <edusupport> I ended up with 4k7 4k7 32k for 3.3v
[18:39] <daveake_> That's about 300Hz shift
[18:39] <edusupport> I get 425
[18:40] <daveake_> Strange. I get 600 from 4k7/4k7/15k
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[18:41] <daveake_> actually, might not be strange
[18:41] <daveake_> I'd have to do the maths
[18:41] <UKC_WTM5_> If the data input level is greater than 3V, a resistor must be added in series with the TXD input to limit the
[18:41] <UKC_WTM5_> modulating input voltage to a maximum of 3V on pin 7. TXD input resistance is 100kW to ground, giving
[18:41] <UKC_WTM5_> typical required resistor values as follows:
[18:41] <UKC_WTM5_> Vcc Series resistor
[18:41] <UKC_WTM5_> £3V
[18:41] <UKC_WTM5_> 3.3V
[18:41] <UKC_WTM5_> 5V
[18:41] <UKC_WTM5_> 9V
[18:41] <UKC_WTM5_> -
[18:41] <UKC_WTM5_> 10 kW
[18:41] <UKC_WTM5_> 68kW
[18:41] <UKC_WTM5_> 220kW
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[18:42] <UKC_WTM5_> dont know why that says kw, meant to say ohms
[18:42] <jonsowman> please use pastie.org UKC_WTM5_ :)
[18:42] <UKC_WTM5_> so I'd be looking at 5v, 68kOhms
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[18:42] <UKC_WTM5_> Alright sorry
[18:42] <jonsowman> thanks :)
[18:43] <UKC_WTM5_> http://maarseveent.com/private/TXMod.png
[18:43] <edusupport> http://ukhas.org.uk/guides:linkingarduinotontx2
[18:44] <fsphil> I'm using 4.7/4.7/47k at 3.3v and an ntx2b I'm getting 350hz
[18:44] <UKC_WTM5_> So according to this, for 5V I should use a 68K resistor, doesnt tell me the freq shift though
[18:44] <UKC_WTM5_> okay
[18:44] <UKC_WTM5_> cheers for the link
[18:44] <mfa298> UKC_WTM5_: try the example on the page edusupport just linked
[18:44] <edusupport> It works :)
[18:45] <UKC_WTM5_> cheers :)
[18:45] <mfa298> if you're choosing a resistor based on the ntx2 datasheet on it's own the shift will be around 6khz which is too large for most real radios and too large for dl-fldigi
[18:46] <UKC_WTM5_> okay thanks, i will stick to the tutorial then
[18:46] <mfa298> alternatively use pwm to generate suitable voltage levels but that depends on what's controlling your payload
[18:48] <UKC_WTM5_> using atmega329 with optiboot bootloader, i'll just fix the resistors as i don't really want to change the code anymore.. it all works and i have 20 bytes of flash left
[18:49] <x-f> 20 bytes of 32 kilobytes?
[18:49] <UKC_WTM5_> correct
[18:49] <UKC_WTM5_> i had to flash different bootloaders to free up spcae
[18:49] <UKC_WTM5_> space*
[18:50] <mfa298> I'm pretty sure people have written code thats *much* smaller than that
[18:50] <UKC_WTM5_> accelerometer, humidity, pressure, temperature, gsm module, ntx2b radio, camera, gps, microsd module
[18:51] <mfa298> do you actually need a bootloader (assuming you're using an ICSP programmer to put the bootloader on, you could probably use that to put the code on with no bootloader)
[18:51] <UKC_WTM5_> could upload through icsp and save another 1.5kb or so yes
[18:51] <UKC_WTM5_> but didn't really bother
[18:52] <mfa298> if you're using libraries for most of those modules check that the libraries can actually co-exist I think it's been found that a lot of libraries don't play well with others (they assume they can use timers / interupts and nothing else will touch them which isn't always the case)
[18:53] <UKC_WTM5_> yeah the microsd card library is one of those
[18:53] <UKC_WTM5_> i got it all working in the end though
[18:53] <amell> enhanced happiness here. My Watson X-50 arrived today in the longest cardboard tube ever.
[18:55] <Geoff-G8DHE-M> Wait till you see the tube for the pole ;-)
[18:55] <mfa298> possibly not as long as the tube my Comet GP15 turned up in, that was >3m from memory)
[18:55] <amell> oh i will get that from tlc in town. just a steel 8m pole
[18:55] <amell> 8 foot i mean !
[18:56] <amell> its got chinese writing all over it, clearly not a genuine watson, but looks the same.
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[18:57] <fsphil> watson don't make an x-50 :)
[18:57] <fsphil> theirs is the W-50
[18:57] <Geoff-G8DHE-M> When my Tennamast was delivered, there was only one guy on the van, my wife, being a nurse, nearly had to do CPR on the guy, apparently the van had been loaded for him ....
[18:59] <amell> http://www.ebay.co.uk/itm/X-50-N-X-50-X50-DUAL-BAND-COLLINEAR-ANTENNA-AERIAL-144-440-/131125172090?pt=UK_Mobile_Phones_Communication_Radio_Antennas&hash=item1e87ab577a
[18:59] <amell> thats what i bought
[18:59] UKC_WTM5 (~UKC_WTM5@host-78-148-181-225.as13285.net) joined #highaltitude.
[18:59] <amell> 40 quid for that big bugger
[19:01] <mfa298> once you get it up at a decent height with some good coax then you should be in business
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[19:03] <Willdude> Something is definitely wrong with my network - 8.2kiB/s over a LAN
[19:06] <fsphil> ah, definitly not a watson. specs are basically the same
[19:06] <fsphil> just be careful to seal the connectors properly
[19:06] <amell> came in yellow and clear bag just like a watson
[19:08] <mfa298> spending that bit extra on the best coax you can (rg213 or better) and self amalgamation tape is worth it in the long run (you don't want to have to go replacing the coax in a years time as water has got into it)
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[19:32] <amell> that dl-fldigi new release. puzzled. the link is to a file which is dated Dec 2012. when i open build info it says Nov 2012
[19:32] <amell> I think theres some kind of issue here.
[19:32] <fsphil> there has not been a dl-fldigi in some time
[19:32] <fsphil> release*
[19:32] <amell> there was a new release today? 3.1
[19:32] <fsphil> nope that's fairly old
[19:33] <amell> oh christ. someone replied to an old email.
[19:33] <fsphil> aah is this from the mail to the mailing list?
[19:33] <fsphil> that's a reply to something in 2012 :)
[19:33] <amell> google groups makes it look recent :(
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[19:36] <DL7AD> evening
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[20:06] <g0pai_ian> I think someone was getting there nappy in a knot and confusing the release numbers for dl-fldigi and fldigi.
[20:08] Lunar_Lander (~kevin@p54889112.dip0.t-ipconnect.de) joined #highaltitude.
[20:08] <Lunar_Lander> hello
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[20:11] <mfa298> if you don't know the background of the dl version I can see that having two sets of version numbers could be confusing
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[20:12] <g0pai_ian> I believe that he had actually been using fldigi . . .
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[20:20] <LeoBodnar> B-41 is up if anybody is awake
[20:21] <LeoBodnar> welcome to track on 434.500 Contestia 8/1000
[20:23] <Lunar_Lander> cool
[20:24] <fsphil> sneaky
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[20:26] <G8KNN> beep, beep, thar she blows....
[20:27] <Geoff-G8DHE> Oh coming up
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[20:33] <Geoff-G8DHE> Anything new / different on this one LeoBodnar
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[20:35] LeoBodnar (5c19288c@gateway/web/freenode/ip.92.25.40.140) joined #highaltitude.
[20:35] <bertrik> I will try to track B-41 once it gets into range
[20:36] <aadamson> lipo and solar LeoBodnar ?
[20:36] <aadamson> I'm assuming it's dark in your guys neck of the woods?
[20:36] <Geoff-G8DHE> Yes
[20:37] <aadamson> 8:30-9:30pm I forget with the DST change which is which and when :)
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[20:37] <aadamson> nada on the websdr
[20:37] <Geoff-G8DHE> Look at the top left box in SNUS it has the GMT time displayed
[20:37] <aadamson> ah, good point
[20:37] <Geoff-G8DHE> maybe I should say UTC
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[20:38] <aadamson> guess the pressure of the VK guys got to LeoBodnar :)
[20:38] <aadamson> maybe pressure is the wrong word, but you know what I mean
[20:38] <Geoff-G8DHE> Maybe he's thinking circumpolar ? In which case he's going the wrong way ;-)
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[20:38] <aadamson> hehe
[20:39] <aadamson> well, he was thinking of staying away from the ukraine and helping with looking for the missing airplane, but then winds took a turn north :)
[20:39] <aadamson> besides it's *HOT* in the desert still I'm pretty sure
[20:40] Geoff-G8DHE_ (~Geoff-G8D@geoffg8dhe.plus.com) joined #highaltitude.
[20:40] <Geoff-G8DHE> Staying away from the Ukraine is probably a good idea, wouldn't take much to spark them off I think
[20:41] <aadamson> darn there goes the neighborhood on the websdr, the repeater is up :(
[20:42] <sa6bss> B41 should be solar powerd according to the flight dicument
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[20:43] Nick change: Geoff-G8DHE_ -> Geoff-G8DHE-M
[20:43] <LeoBodnar> yes, LiPo and solar :)
[20:44] <aadamson> ok, so tell me about contestia, I'm tring to find it on the waterfall,
[20:44] <aadamson> is it not a constant transmitter?
[20:44] <aadamson> I have a beep probably on one second intervals at around 434.500
[20:44] Action: mfa298 went to setup radio and then realised it might not be in range yet
[20:44] <aadamson> but nothing decodable
[20:44] <LeoBodnar> Contestia comes every ~4 minutes
[20:45] <aadamson> ok, I just heard something
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[20:45] <aadamson> what does it do when it's not transmitting pulse a tone on 1 second or there abouts?
[20:48] <Geoff-G8DHE> a short beep every second can't see it on SUWS at the moment
[20:48] <amell> B41? oh nads. my new super duper antenna isn't up yet :(
[20:48] <fsphil> does it play any tunes LeoBodnar ? :)
[20:49] <aadamson> ah, got a partial... ok, I've found on on the websdr 434.499.61
[20:49] <Geoff-G8DHE> Thats it 434499.34 on SUWS
[20:49] <amell> Leobodnar: how many weeks are you anticipating B41 floating around europe and asia for?
[20:50] <mfa298> amell: there'll probably be lots more, Leo's been launching less than a year and already up to launch 41!
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[20:50] <LeoBodnar> heh i am not sure what weather in March is like. I have never flown in March.
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[20:52] <amell> i like the solar panel variable. is it voltage or charge current?
[20:53] <aadamson> give me an approx lat/lon for london please?
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[20:53] <aadamson> I thought dl-fldigi would save it, but it didn't and while my antenna is good, it's NOT THAT GOOD! ;)
[20:54] <aadamson> ah, i figured one out
[20:54] <craag> aadamson: 51.3,-1.1
[20:54] <LeoBodnar> voltage amell
[20:54] <aadamson> craag, tnx
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[20:57] <craag> aadamson: Cheers, that's the rough position of the websdr
[20:57] <aadamson> LeoBodnar, what's it's output pwr?
[20:57] <LeoBodnar> ~10mW
[20:57] <aadamson> is this an Si chip? 40xx?
[20:58] <amell> any aprs for europe?
[20:59] <mfa298> craag: assuming it's not already could it be worth putting a rough lat/lon/alt on the websdr page ?
[21:00] <amell> not going to try and track this. Im almost sure I won't get it on a poxy mag antenna.
[21:00] <LeoBodnar> yes aadamson and yes amell
[21:00] <aadamson> so reading about contestia, is 8/1000 mean 8 tones in 1000hz bandwidth?
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[21:02] <craag> mfa298: Yes.. I will add it now.
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[21:04] <craag> mfa298: Added, thanks.
[21:10] <UKC_WTM5> mfa298 and others: thanks a lot, radio is working properly with the right resistors in place
[21:10] <UKC_WTM5> works perfect
[21:10] <Geoff-G8DHE> Decode
[21:10] <UKC_WTM5> perfectly*
[21:11] <bertrik> hm, B-41's going right over the center of london, according to prediction
[21:12] <Geoff-G8DHE> Heading for some decent Night Life then!
[21:12] <amell> hope no fighters are scrambled to investigate
[21:13] <aadamson> LeoBodnar, how many milliamp lipo?
[21:13] <LeoBodnar> 250mAh
[21:13] <tweetBot> @G8DHE: B-41 HAB up 434.5 Contestia 8/1000 #ukhas #hab
[21:13] <tweetBot> http://t.co/RyYuH7psRM
[21:14] <aadamson> ok, very cool!
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[21:14] <aadamson> and if I read this right, 8/1000 is 125baud and tones are spaced at 125k, 3 bits per symbol?
[21:15] <amell> I see vk3yt-11 is just about to leave NZ
[21:15] <LeoBodnar> yes aadamson
[21:15] <aadamson> thanks!
[21:15] <aadamson> amell, aren't those old from this morning?
[21:16] <aadamson> morning (us) time that is :)...
[21:16] <aadamson> it's been stuck there since it ran out of coverage
[21:16] <amell> aadamson: duh, yes, was reading it as local time. obviously it isnt.
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[21:18] <amell> coming up to hyde park
[21:19] <amell> forecast to pass directly in front of buckingham palace
[21:21] <aadamson> how many packets does it squirt out at each interval? 2 or 3?
[21:22] <Geoff-G8DHE> 2
[21:25] <aadamson> thanks Geoff-G8DHE
[21:25] <Geoff-G8DHE> Coming down Mayfair
[21:25] <aadamson> I've never got both, so wasn't sure, only the rare 1 out of 2
[21:25] <aadamson> it's on the London/Paris route ;)
[21:26] <Geoff-G8DHE> You'll have to teach it to Dip in-front of the palace LeoBodnar !
[21:26] <LeoBodnar> heh
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[21:33] <Herman-PB0AHX> GE all
[21:33] <Upu> Evening Herman
[21:33] <Herman-PB0AHX> hoi Upu
[21:35] <aadamson> LeoBodnar, can I ask? ... so is this a 1.8v package running on buck/boost from solar/lipo and are you limiting when it transmits as you have in the past to only above a certain voltage?
[21:36] <LeoBodnar> yes it's buck from LiPo to 2v level
[21:36] <LeoBodnar> it will shut down at 3.4v or so
[21:36] <LeoBodnar> ~ish, i can't remember now
[21:37] <aadamson> like B-12 or something I think?
[21:37] <aadamson> is the processor runing at 1.8 or 3v3
[21:37] <Upu> 2V :)
[21:37] <aadamson> so why shut down at 3.4?
[21:37] Babs_ (5eaf0925@gateway/web/freenode/ip.94.175.9.37) joined #highaltitude.
[21:37] <aadamson> I'm not sure i"m getting that part
[21:37] <Upu> can knacker the cell
[21:37] <aadamson> ah
[21:37] <aadamson> duh, forgot lipo
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[21:37] <aadamson> yeah
[21:37] <aadamson> min voltage
[21:37] <aadamson> ok
[21:38] <aadamson> thanks Upu
[21:38] <Upu> though interestingly Leo , Arko put a chip on his board that disconnects the battery at 3.1V or at 2.7V in "reduced life mode"
[21:38] <LeoBodnar> i have one too
[21:38] <Upu> not that you get much extra for that as its already on the discharge cliff at that point
[21:38] <LeoBodnar> there is hard shutdown at 2.9V
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[21:39] <Upu> I don't have any code to do that
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[21:39] <aadamson> yeah some say 3.0v per cell, but most use higher
[21:39] <LeoBodnar> it shuts down everything that still giggles
[21:39] <LeoBodnar> it's trivial, get reset controller and stick it to DCDC enable pin
[21:40] <LeoBodnar> reset controllers are 3-pin parts
[21:40] <SpeedEvil> My phone goes down to 2745mV
[21:42] <Laurenceb> i run my work stuff of lipo with LDO
[21:42] <Laurenceb> as im a cheapscate
[21:42] <Laurenceb> so use 3.45v cutoff
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[21:45] <craag> aadamson: Is the websdr working ok for you?
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[21:45] <aadamson> it was ok, not great copy, I just dropped off
[21:46] <aadamson> I was in usb-narrow mode
[21:46] <craag> I'm having strange cut-outs, not sure if the problem is my end or it
[21:46] <aadamson> at approx 434.499.6
[21:46] <aadamson> oh, the id on the repeater comes up all the time
[21:46] <aadamson> it's coming up about every 5 minutes it seems
[21:46] <craag> Yes.. but total audio cutouts
[21:46] <aadamson> and lots of QRM
[21:46] <craag> Not much we can do about the repeater, it's on the same mast :/
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[21:47] <craag> Ah shell sessions are lagging... which of my housemates is torrenting??!?!
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[21:50] <UKC_WTM5> Anyone know why the parses is doing this? http://pastie.org/8948772
[21:51] <UKC_WTM5> parser*
[21:52] <Upu> its working now ?
[21:52] <Upu> its on the map
[21:52] <Geoff-G8DHE> Surely its logtail so it was fine the errors were previous ?
[21:53] <UKC_WTM5> Sorry
[21:53] <mikestir> craag: could you try adding a stub filter to cut down the repeater?
[21:53] <UKC_WTM5> I'm too tired for this, you were right
[21:53] <UKC_WTM5> I was reading it the wrong way round
[21:53] <Upu> :)
[21:53] <UKC_WTM5> [2014-03-18 21:48:44,590] INFO habitat.parser MainThread: UKHAS parsed data from UKC_WTM5 successfully
[21:54] <Geoff-G8DHE> Its the $$GE-TEST5 thats having a problem
[21:55] <craag> mikestir: We tried, but with attenuation deep enough it knocked out most of the desired band.
[21:56] <craag> We're re-locating the websdr a short distance away soon, which may improve things.
[21:56] <Geoff-G8DHE> What is the seperation craag
[21:56] <Geoff-G8DHE> frequency wise
[21:56] <UKC_WTM5> Yeah exactly, cheers for that
[21:56] <craag> Geoff-G8DHE: Between what?
[21:57] <Geoff-G8DHE> The repeater
[21:57] <Geoff-G8DHE> is it 2m or 70cms repeater ?
[21:57] <craag> It's a 70cm repeater
[21:58] <craag> In the middle of the target band
[21:58] <Geoff-G8DHE> Ah right
[21:58] <craag> Yeah, makes it a bit difficult!
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[21:59] <LeoBodnar> what's a good mobile 100W rig for 2m/70cm?
[21:59] <LeoBodnar> that can do SSB?
[21:59] <Geoff-G8DHE> quite its always going to be only a couple of MHz away at best!
[21:59] <malgar> LeoBodnar: I see a B-41 :)
[21:59] <mfa298> LeoBodnar: people seem to quite like the Yaesu 847/857 type radios
[22:00] <mfa298> although I'm not sure there are many radios that do 100W on 70cms
[22:00] <craag> Geoff-G8DHE: Also the websdr is there to listen to 70cm repeaters as well... so the 'seperation' between target freq and repeater freq is 12.5KHz :P
[22:00] <Geoff-G8DHE> I was going to say a PA added on ight be better
[22:00] <LeoBodnar> actually FSK so not necessarily linear PA
[22:01] <Upu> 897 can do 20W on 70cms
[22:02] <craag> ic7000 is a nice rig, pricey but sensitive.
[22:02] <mfa298> some of the icom rigs look nice but they're a bit bigger
[22:02] <Upu> 857 is the same size as a 817
[22:03] <Upu> can also do 20W on 70cms
[22:03] <eroomde> pricey but sensitive sounds like a gf joke
[22:03] <eroomde> insert your own, i guess
[22:03] <craag> lol eroomde
[22:03] <Upu> lol
[22:03] <Upu> http://www.yaesu.com/downloadFile.cfm?FileID=787&FileCatID=156&FileName=FT%2D857%5FBrochure.pdf&FileContentType=application%2Fpdf
[22:03] <Upu> look it has a man with a 4x4 in the brochure
[22:03] <Upu> let me hear you rrrroar
[22:04] <Upu> "HF Excitement"
[22:04] <Upu> Ed is that you on the brochure ?
[22:06] <eroomde> no.
[22:06] <Upu> seems to have your ideal vehicle on it
[22:06] <Lunar_Lander> xD
[22:07] <craag> Lots of leaning out the window on P2
[22:07] <eroomde> that's true
[22:07] <mfa298> personally I'd probably look at the Kenwood/ICOM offerings first, I'm not a huge fan of the yeasu menus and their output power usually seems to be much lower than the kenwood/icoms on 2/70 (for the multiband rigs)
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[22:07] <LeoBodnar> offroaders gag incoming yet?
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[22:09] <mikestir> HF excitement - after a particularly busy day at the doctor's surgery
[22:09] <amell> leobodnar: what latitude do you turn on aprs?
[22:09] <LeoBodnar> outside of the UK waters
[22:10] <eroomde> i have, in the last few days, rebuilt a defender propshaft, which was instructive
[22:10] <eroomde> i'm slowly warming up to the idea of getting one
[22:25] <Geoff-G8DHE> Whats the ssid on APRS LeoBodnar
[22:26] <bertrik> I think I just saw the 1-second beep, ready to receive a few packets now
[22:27] <LeoBodnar> http://aprs.fi?call=M0XER-11
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[22:29] <Geoff-G8DHE> Hah the old M0XER-11 is still there off Scicly
[22:30] <LeoBodnar> ah, it's an African one
[22:30] <Babs_> eroomde - are you still on?
[22:30] <LeoBodnar> i have to reuse SSIDs
[22:31] <amell> 13 grams and solar powered - wow. impressive weight!
[22:31] <eroomde> Babs_: for about 2 more mins
[22:31] <amell> Do you have an objective in particular for B-41?
[22:31] <Willdude123> One thing about the 857D that put me off was that it's small. I mean, my IC-703 moves about when I turn the dial
[22:32] <Babs_> 2 mins - can we do a quick sharing of thoughts on precession?
[22:32] <Babs_> if not no urgency
[22:32] <LeoBodnar> amell: not really, just a walkabout
[22:32] <eroomde> might be better tomorrow - i'm a bit sleepy (acid reflux so on pain killers) for dynamics
[22:34] <Babs_> no worries - have been debating it in my mind over the last couple of days and it would be interesting to share some thoughts
[22:34] <Babs_> hope you feel better, speak later
[22:34] <eroomde> ta
[22:34] <eroomde> nn
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[22:35] <Laurenceb> ooh B-41
[22:35] <Reb-SM3ULC> LeoBodnar: nice to see another flight :)
[22:35] <Laurenceb> i completely missed that
[22:37] <Geoff-G8DHE> You mean you don't monitor isleoflying all the time :-)
[22:38] <jcoxon> is leo flying is also isle of lying
[22:38] <fsphil> don't believe you
[22:39] <LeoBodnar> lol
[22:39] <Geoff-G8DHE> Arko still has him North of the artic circle!
[22:39] <bertrik> got a string that matches the one on the website, but not accepted as good unfortunately
[22:40] <Reb-SM3ULC> aprs!
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[22:42] <Herman-PB0AHX> yesssss green lines
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[22:44] <amell> tonights effort on the rocket: http://imgur.com/XTkIzzm
[22:46] <Geoff-G8DHE> B-41 has reached float height http://360.g8dhe.net/HAB_Flights/2014_Flights/B-41_20140318/index.php?ind=4
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[22:50] <amell> can we add moxer-11 to spacenear.us so i don't have to look at two websites?
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[22:53] <malgar> is there a noaa forecast for B-41?
[22:56] Geoff-G8DHE_ (~Geoff-G8D@geoffg8dhe.plus.com) joined #highaltitude.
[22:58] <Geoff-G8DHE> http://ready.arl.noaa.gov/hypubout/114045_trj001.gif
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[23:00] Nick change: Geoff-G8DHE_ -> Geoff-G8DHE-M
[23:00] <malgar> when do you think it will cross the italian border? just to know when I should be ready for listening it
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[23:01] <amell> :)
[23:02] <LeoBodnar> http://ready.arl.noaa.gov/hypubout/114078_trj001.gif
[23:02] <Geoff-G8DHE> 0600 tomorrow morning
[23:02] <Lunar_Lander> "Name a weapon used in the board game Cluedo" "Dice"
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[23:02] <Lunar_Lander> xD
[23:06] <Geoff-G8DHE> http://ready.arl.noaa.gov/hypubout/114103_trj001.gif
[23:08] <LeoBodnar> Geoff-G8DHE: use isobaric model not vertical velocity one. Ideal SP balloon maintains constant pressure altitude.
[23:08] <Geoff-G8DHE> Yes just realised, I always seem to forget that setting!
[23:08] <LeoBodnar> dust particles on the other hand move with vertical air movements
[23:11] <Laurenceb> this thing is working very nicely
[23:11] <Laurenceb> 3.9v
[23:11] <amell> not heard from it for 22 minutes.
[23:12] <amell> did it get shot down by a french air defence fighter
[23:13] <amell> oh i see it is alive on spacenear.us
[23:14] <LeoBodnar> no APRS over France
[23:15] <bertrik> yay, got a green decode 2 minutes ago :)
[23:15] <amell> i thought aprs over france was allowed. there were some packets earlier.
[23:15] <Geoff-G8DHE> Predict and Actual http://360.g8dhe.net/HAB_Flights/2014_Flights/B-41_20140318/index.php?ind=9
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[23:16] <db_g6gzh> last APRS was 2014-03-18 22:49:03.082 G6GZH-1 R M0XER-11>APRS,WIDE2-1:!/4z+'NpyHO 2m/A=023661|"!L7!!:L!(!'!!|
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[23:17] <Laurenceb> http://ukhas.org.uk/_media/projects:report_v4.pdf <- on the topic of dust
[23:18] <LeoBodnar> ah so that's what you were talking about :D
[23:19] <arko> Geoff-G8DHE: haha just noticed that i forgot to remove the banner
[23:20] <Geoff-G8DHE> humm plausible https://plus.google.com/106271056358366282907/posts/GoeVjHJaGBz
[23:20] <arko> there we go
[23:20] <arko> now it just says "YES:
[23:21] <LeoBodnar> succinct
[23:22] <amell> Geoff-G8DHE: I read that yesterday, most sensible theory I've heard so far. Wouldn't be surprised if a Lipo fire in the hold caused this.
[23:22] <Laurenceb> maybe
[23:22] <Laurenceb> but it kept flying for ages
[23:22] <Laurenceb> its all very odd
[23:23] <amell> fly by wire has built in protections even with autopilot off. it will fly for ages even if everyone on board is dead.
[23:23] <fsphil> hmmm... isfsphilflying.com is free
[23:23] <fsphil> can just put up a static page. "probably not"
[23:23] <LeoBodnar> i don't think 777 uses fly by wire to that extent
[23:23] <amell> make sure you don't miss his follow up comment
[23:24] <LeoBodnar> the plane won't maintain heading or altitude if not on AP
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[23:27] <Lunar_Lander> Laurenceb, still would be cool to make this
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[23:27] <amell> i read somewhere that the fly by wire will automatically maintain trim and speed witth AP off if auto throttles still enabled. It won't maintain heading however. I can't find the reference though
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[23:28] <DL7AD> good morning!
[23:29] <amell> no way did a captain flying since 1981 do something like this, it is completely illogical.
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[23:30] <LeoBodnar> this sounds like and Airbus gizmo. Boeing has completely different approach to that
[23:31] <LeoBodnar> i don't believe it will correct any pilot input if AP is off
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[23:32] <LeoBodnar> I can see how pilots could put plane onto AP and then start looking for relevant checklists
[23:33] <amell> leobodnar: http://www.quora.com/Kåre-Lohse/Posts/Commercial-aircraft-CAN-and-WILL-fly-without-pilots-autopilots
[23:34] <mikestir> what about this business of an extra waypoint having been added to the flight computer before the ACARS went off?
[23:34] <LeoBodnar> well being stable is different from maintaining altitude/course
[23:34] <amell> mikestir: I don't understand how they deduced that. Surely Acars won't contain that info.
[23:35] Nick change: MichaelC3 -> MichaelC
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[23:35] <mikestir> well either that or they found the flight recorder
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[23:36] <amell> mikestir: lets not start another rumour... !
[23:36] G8APZ (4f4e7330@gateway/web/freenode/ip.79.78.115.48) joined #highaltitude.
[23:36] <LeoBodnar> is there any rumour that has not been started yet?! :D
[23:37] <fsphil> it hit a foil balloon?
[23:37] <amell> leobodnar: as an example of what I was saying, look at what happened with paine stewart...
[23:37] <amell> fsphil: yes, with 'Leobodnar' printed on it.
[23:38] <amell> sorry, payne stewart
[23:38] <DL7AD> LeoBodnar: which type of battery did you attach to the tracker?
[23:38] <LeoBodnar> LiPo
[23:38] <mikestir> maybe it's hovering over the thames estuary with baloonyolo
[23:39] <G8APZ> I cannot hear any blips and I should be able to
[23:39] <Geoff-G8DHE> Missed the last transmission :-(
[23:39] <Geoff-G8DHE> QRM
[23:39] <G8APZ> but then it does have aprs and the 434 is usually weak when antenna is shared
[23:41] <DL7AD> LeoBodnar: thx
[23:41] <Laurenceb> "Still, the "landing gear" hypothesis is easily debunked as each tire on the B777 is equipped with a pressure and temperature sensor. A situation with hot brakes or a blown tire on departure would immediately trigger a visual and aural EICAS caution in the flight deck"
[23:41] <Laurenceb> LeoBodnar: does this flight have temperature sensing?
[23:41] <Laurenceb> not that it has landing gear to worry about lol
[23:42] <G8APZ> or 150 mobile phones aboard
[23:42] <amell> We really need to know if a pallet of lipos destined for hobbyking was loaded into that plane.
[23:42] <LeoBodnar> I have no good knowledge of commercial airliners apart from just general knowledge.
[23:43] <LeoBodnar> lol Laurenceb yes but only internal to Si4060
[23:44] <DL7AD> rofl..... http://www.ebay.de/itm/1x-LiPo-3-7v-400mAh-Walkera-Reely-Dragonfly-Lama-2-Akku-/160530091612?pt=RC_Modellbau&hash=item256056ce5c
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[23:44] <DL7AD> 105¬ for a 400mah lipo ^^
[23:44] <Laurenceb> rofl amell
[23:45] <Laurenceb> LeoBodnar: i dont see it on the telemetry?
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[23:45] <Geoff-G8DHE> -43
[23:45] <DL7AD> °F?
[23:45] <amell> It does say C
[23:46] <Geoff-G8DHE> Herstmonceux is tagging on behind you LeoBodnar
[23:47] <G8APZ> dial QRG pse?
[23:47] <Geoff-G8DHE> it agrees temp is -40 ish at 7Kms
[23:47] <Geoff-G8DHE> <2014-03-18T23:44Z Contestia @ 434500515+0995>>
[23:48] <Geoff-G8DHE> RSID now
[23:48] <G8APZ> Thanks... not seen anything yet
[23:48] <Geoff-G8DHE> its running
[23:48] <Geoff-G8DHE> finished
[23:49] <Laurenceb> hmm what the heck
[23:49] <Laurenceb> spacenear is being weird
[23:49] <Laurenceb> LeoBodnar: is this a low temp lipo?
[23:49] <LeoBodnar> yes
[23:50] <DL7AD> low temp lipos? never heard about.... *confuse*
[23:51] <Laurenceb> yeah the non mobile tracker works ok
[23:51] <Laurenceb> how odd
[23:51] <Geoff-G8DHE> Following the 7000m predict quite nicely http://360.g8dhe.net/HAB_Flights/2014_Flights/B-41_20140318/index.php?ind=5
[23:52] <amell> I've determined that Geoff-G8DHE has an intimate relationship with Google Earth
[23:52] <Laurenceb> very impressive performance for -43C
[23:53] <Geoff-G8DHE> :) Used it for such a long time!
[23:54] <amell> Theres a KML somewhere that overlays GFS forecasts onto Google Earth, looks quite impressive
[23:54] <G8APZ> I'll admit defeat ... cannot hear B-41
[23:55] <Geoff-G8DHE> Watch my live waterfall :-)
[23:55] <G8APZ> I'm watching mine!!
[23:55] <Geoff-G8DHE> just coming up to RSID
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[23:56] <Geoff-G8DHE> Oh LeoBodnar is it possible to extend the gap between RSID and start of data by about 0.5-1 second I just miss the first 4 characters when its weak and a cfreq correction is needed ?
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[23:57] <Geoff-G8DHE> The second one always comes in fine
[23:57] <Geoff-G8DHE> Before RSID: <<2014-03-18T23:55Z Contestia @ 434500515+1006>>
[23:57] <Geoff-G8DHE> 1,127,235332,140318,49.7251,2.601,7317,7,-42,3.89,0*2BBE
[23:57] <Geoff-G8DHE> $$B-41,128,235508,140318,49.7075,2.6278,7307,7,-42,3.89,0*CB92
[23:57] <LeoBodnar> ah OK, will do that
[23:57] <LeoBodnar> so RSID block the reception ?
[23:57] <amell> going to upload new code to the balloon?
[23:57] <LeoBodnar> +s
[23:57] <LeoBodnar> heh
[23:57] <Geoff-G8DHE> No its only when weak and a freq correction then it just loses sync a little it seems
[23:58] <Geoff-G8DHE> when its a strong signal no problem
[23:58] <LeoBodnar> ok we'll try that next time
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[23:58] <Geoff-G8DHE> I noticed on one of the previous flights but forgot to mention it
[23:58] <Laurenceb> its going very fast
[23:58] <Geoff-G8DHE> RSID now
[00:00] <G8APZ> no chance on this flight sorry... nil heard
[00:00] --- Wed Mar 19 2014