highaltitude.log.20160211

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[04:14] <SpacenearUS> New vehicle on the map: 03KF7RCV-11 - 12http://tracker.habhub.org/#!qm=All&q=KF7RCV-11
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[04:38] <kshsu1> hi all! anyone here familiar with U.S. laws on hobbyist weather balloons?
[04:39] <kshsu1> like how high we can go up without interfering with airplanes, and other laws and things?
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[08:11] <SpacenearUS> New vehicle on the map: 032E0EBR - 12http://tracker.habhub.org/#!qm=All&q=2E0EBR
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[09:34] <SpeedEvil> http://imgur.com/gallery/xyXGvqK
[09:35] <AndyEsser> Rainbow Plane!
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[10:11] <SpacenearUS> New vehicle on the map: 03SCORPION - 12http://tracker.habhub.org/#!qm=All&q=SCORPION
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[10:57] <R34lB0rg> SpeedEvil, obviously blue light travels faster than red light )
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[12:47] <Ben-AstroSoc> gonna set up a watchdog routine today that resets everything after 3 duff gps readings
[12:55] <AndyEsser> Am I the only person that thinks having code to reset everything constantly is a bad way to run things?
[12:55] <AndyEsser> shouldn't you program it to be 'right' first, and then a watchdog/backup after?
[12:56] <Ben-AstroSoc> i mean, if the gps is throwing funny readings in the middle of flight the only think you can do is reset
[12:57] <Ben-AstroSoc> it's just a backup for midflight if something does go wrong
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[13:21] <fsphil> resetting the cpu won't really do anything if your gps is acting up
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[13:22] <Ben-AstroSoc> in doing so it'll resend the gps initialisation though
[13:22] <fsphil> the wdt is more for your own program crashing or getting stuck in a loop
[13:23] <AndyEsser> fsphil: pish - real mean don't need WDTs
[13:23] <AndyEsser> :P
[13:24] <Miek> are you having trouble with the GPS at the moment? is it often throwing funny readings?
[13:24] <fsphil> wish my brain had one
[13:24] Action: AndyEsser grabs hammer
[13:24] <AndyEsser> fsphil: I can help with that
[13:24] <fsphil> "You've been watching youtube for +5 hours, do you want to do some actual work?"
[13:24] <AndyEsser> I prefer Netflix's "You have 15 seconds to decide if you're going to be productive today"
[13:25] <pb0ahx> !flights
[13:25] <SpacenearUS> 03pb0ahx: There are no flights currently :(
[13:25] <Ben-AstroSoc> it's not throwing anything funny at the moment it's mor 9ejust in case
[13:26] <AndyEsser> what GPS are you using?
[13:26] <Ben-AstroSoc> ublox max-m8q
[13:28] <fsphil> be careful you don't end up preventing the gps from working
[13:28] <fsphil> if you keep resetting it before it gets a lock for example
[13:28] <AndyEsser> ^
[13:28] <Ben-AstroSoc> yeah point
[13:28] <AndyEsser> Ben-AstroSoc: are you hooking up the Vbat pin?
[13:28] <Ben-AstroSoc> it's what 7 sats for a strong fix?
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[13:31] <Ben-AstroSoc> using a breakout board - which one's the Vbat pin
[13:32] <AndyEsser> if it's the Pico breakout board
[13:32] <AndyEsser> ie just TX/RX/SDA/SCK/+v/0v then it isn't there
[13:32] <Ben-AstroSoc> https://dl.dropboxusercontent.com/u/63720513/HAB%20Supplies%20Datasheets/HAB-BO-M3P-ASSY.pdf it's thi sone
[13:33] <AndyEsser> no Vbat on the breakout board apparently
[13:33] <Ben-AstroSoc> realised the board puts out a pulse when locked so can make use of that
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[14:22] <mfa298> I'd have thought if the gps is playing up it's better to just reset the gps rather than the whole uC, that way you can set a flag in the telemetry to indicate a gps issue.
[14:23] <AndyEsser> ^
[14:23] <mfa298> if it's currently easier to just reset the whole thing to re-initialise the GPS you're doign the code wrong.
[14:23] <AndyEsser> anyone know if the 328 can sink enough current through it's output pins to power a Ublox M8C?
[14:23] <AndyEsser> (I'm aware the datasheet will answer this... I'm being lazy)
[14:24] <mfa298> I suspect the peak power draw on the gps is higher than the 328 can manage, although datasheets would tell you. Easy enough to stick a mosfet in the middle though
[14:26] <AndyEsser> Yea, I've been toying with the idea of the 328 being able to power on/off all the peripheral devices, was going to just stick some appropriate transistor in for the current
[14:26] <AndyEsser> does it really need a MOSFET or would just some flavour of NPN do it?
[14:26] <mfa298> I'm pretty sure mosfet won't have the voltage drop you get on a transistor
[14:27] <AndyEsser> fair enough
[14:27] <AndyEsser> never actually used MOSFETs myself
[14:27] <AndyEsser> shall investigate what I need
[14:28] <mfa298> I think 2n7000 is one of the most common ones, can't remember how mcuh current they can switch though
[14:29] <mfa298> I've not used then a huge amount, but much nicer than a transistor + relay.
[14:29] <zyp> mfa298, which voltage drop? both bjts and fets have a pretty small drop along the main path when saturated
[14:30] <AndyEsser> mfa298: yea, I'm an old school transitor + relay man :)
[14:30] <AndyEsser> mainly I think because I was never taught about MOSFETs
[14:30] <AndyEsser> so never think of them when talking about 'high power'
[14:32] <mfa298> zyp: ah I was thinkign there was still the 0.7 drop on bjts CE, been a while since I've used them
[14:33] <AndyEsser> isn't the 0.7 drop basically always a factor with silicon based stuff?
[14:33] <zyp> no
[14:34] <zyp> not even if you only talk about diodes
[14:34] <AndyEsser> fair enough :)
[14:34] <zyp> e.g. schottky diodes typically have a drop of <0.2V
[14:34] <AndyEsser> but they're 'special' ;)
[14:35] <zyp> not really
[14:35] <zyp> :)
[14:35] <AndyEsser> Stop trying to fill in the gaps of my knowledge and educating me!
[14:35] <AndyEsser> :P
[14:36] <zyp> to answer your original question; to switch power for the gps you'll want to do high side switching (because having a switched ground would be bad)
[14:37] <zyp> for simple high side switching you'll either want to use a PNP BJT or a p-channel MOSFET
[14:37] <AndyEsser> as in switch the +v rather than the 0v pin?
[14:37] <zyp> yes
[14:37] <AndyEsser> was always what I would do anyway
[14:37] <AndyEsser> but I thin kthat's mainly just a mental thing for "Well power goes in here, stop it"
[14:37] <AndyEsser> :P
[14:38] <zyp> NPN BJT or n-channel MOSFET would require a higher voltage than the switched voltage to control it
[14:38] <AndyEsser> Ah ok - cheers :)
[14:38] <zyp> which is easy when you switch ground, not so much when you switch high side
[14:38] <AndyEsser> really wish farnell just remememberd my choice of country rather than ask every damn time
[14:39] <zyp> high side switching tends to be more annoying; when the switched voltage is larger than your microcontroller IO voltage, you can't drive the transistor directly, so you'll typically need two
[14:40] <zyp> an npn to drive a pnp or a n-fet to drive a p-fet
[14:40] <AndyEsser> sure
[14:40] <AndyEsser> 15A MOSFET array
[14:40] <AndyEsser> that should be enough
[14:40] <AndyEsser> :P
[14:40] <zyp> the complexity of a bjt vs a mosfet solution tends to be the same too
[14:41] <AndyEsser> hmmm
[14:41] <AndyEsser> just thinking how many I need
[14:41] <zyp> a bjt needs a resistor in series with base, a mosfet often needs a pullup/pulldown on gate to avoid it floating
[14:41] <AndyEsser> Radio + GPS I think is all atm...
[14:41] <AndyEsser> so just 2 MOSFETs or BJT
[14:42] <AndyEsser> I guess with the MOSFET you treat the gate just as any other digital input to avoid floaty-ness
[14:42] <mfa298> depending on what radio you use you might not need to actually turn it on/off
[14:42] <zyp> AndyEsser, yes
[14:42] <AndyEsser> I'm using the NTX2B
[14:42] <AndyEsser> and can already toggle the EN pin via the IC
[14:42] <mfa298> the ntx2b has a enable pin you can use to control it which won't have much current draw so can probably go straight to the uC
[14:42] <zyp> AndyEsser, mosfet gates are exactly what most digital inputs are ;)
[14:42] <AndyEsser> mfa298: tis what I currently do :)
[14:43] <AndyEsser> mfa298: suggesting I don't atually bother with the power side then?
[14:43] <AndyEsser> I suppose the NTX2b is actually a fairly 'dumb' device and can't really get its knickers in a twist
[14:43] <mfa298> I'm not sure there's much point, you can also use the en pin to program frequency (if using the -fa version)
[14:43] <AndyEsser> cool
[14:44] <AndyEsser> I need to remember to get the -fa versions in future
[14:44] <mfa298> that's what Upu sells
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[14:45] <AndyEsser> then I may already have one
[14:45] <AndyEsser> I honestly can't remember
[14:45] <Upu> did you get it from me or RMX ?
[14:45] <Upu> what does the sticker say ?
[14:45] <AndyEsser> not really been able to get into my 'lab' for weeks now
[14:45] <AndyEsser> Upu: yes it was from you
[14:45] <AndyEsser> no idea what the sticker says without having it in front me of
[14:45] <AndyEsser> front of me*
[14:45] <Upu> in which case you can reprogram the frequency
[14:45] <AndyEsser> cool
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[14:58] <tweetBot> @daveake: New manual for the Pi In The Sky board. https://t.co/LuqqaIYPGL #UKHAS
[14:58] <AndyEsser> Davespice: Page 1 - Don't be a muppet
[14:58] <AndyEsser> ?
[14:58] <AndyEsser> err..
[14:58] <AndyEsser> daveake: even
[14:59] <daveake> err..
[14:59] <daveake> There are no muppets here. Not even gonzo_
[15:00] <AndyEsser> really? some of the customer horrors you've mentioned :P
[15:00] <daveake> I said "here" :)
[15:01] <gonzo_> I nose you are talking about me!
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[15:03] <AndyEsser> What's the best way to monitor current consumption btw?
[15:04] <mattbrejza> 34460A
[15:04] <mattbrejza> most dmms probably fine too
[15:04] <AndyEsser> err.. sorry.. I meant... "monitor current consumption on-board"
[15:04] <mattbrejza> oh right
[15:05] Action: AndyEsser should be clearer in future
[15:05] <mattbrejza> small current shunt and something like a ztc1190
[15:05] <mattbrejza> or whatever its called
[15:05] <mattbrejza> its just a specialised opamp to amplify the small voltage across the shunt resistor
[15:06] <mattbrejza> ZXCT1109 rather
[15:06] <AndyEsser> http://www.diodes.com/_files/datasheets/ZXCT1107_10.pdf ?
[15:07] <mattbrejza> yea
[15:07] <AndyEsser> and then jnust push the output into the ADC and voila
[15:07] <AndyEsser> ?
[15:07] <mattbrejza> yep
[15:07] <AndyEsser> cool beans
[15:07] <AndyEsser> shall get one ordered
[15:08] <gonzo_> I assume that op-amp is designed to work right at the supply rail?
[15:08] <mattbrejza> a 12bit adc could probably just sample directly if you didnt care about accuracy/resolution so much mind you
[15:08] <AndyEsser> only have a 10-bit
[15:09] <mattbrejza> many current shunt amps actually are fine with input voltages above the supply rail
[15:09] <gonzo_> you could put some R in the supply, and feed a regulated V into the adc in, and reply on the Vdrop affecting the ADC ref ?
[15:09] <gonzo_> rely
[15:10] <gonzo_> the measurement would probably need linearising though
[15:10] <mattbrejza> you could connect the ADCref to the output of the reg, then have a shunt to the rest of the circuit and connect one adc pin to the supply
[15:11] <mattbrejza> similar idea
[15:11] <mattbrejza> (providing the micro is fine with the ref pin being ~100mV higher than the supply
[15:11] <gonzo_> that was my thought of letting the ref do the measurement
[15:12] <gonzo_> or put the Rshunt before the reg, then use a PD on the Vin and the V post Rshunt
[15:13] <gonzo_> but that just feeld non-elegent
[15:13] <gonzo_> but it would give a Vin measurement for free
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[15:14] <R34lB0rg> ligo announcement starting in seconds: https://www.youtube.com/watch?v=zyo4DFr4D4I
[15:16] <Ben-AstroSoc> how much do you guys normally get helium for? looking like the uni might fund some hardware so need an estimate
[15:16] <gb73d> tooned in to LIGO
[15:20] <AndyEsser> https://www.youtube.com/user/VideosatNSF/live
[15:20] <AndyEsser> another feed
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[15:22] <SpeedEvil> sigh
[15:27] <fsphil> https://youtu.be/6MH9qWemtPo?t=9
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[15:34] <fsphil> "We've discovered something interesting ... quick, produce a promo video!!!"
[15:34] <daveake> Well he cut to the chase
[15:34] <AndyEsser> no beating around the bush there
[15:34] <russss> I wish he'd just ended the press conference there
[15:34] <AndyEsser> right.. livestream over now
[15:34] <russss> thanks for coming
[15:34] <AndyEsser> russss: yea
[15:35] <nick_> "discovered something interesting" may not be the best term.
[15:35] <AndyEsser> gravitational waves being proven to exist isn't interesting?
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[15:36] <daveake> Someone check habitat to make sure a HAB didn't fly past LIGO on that day
[15:36] <AndyEsser> haha
[15:36] <nick_> AndyEsser: no
[15:36] <fsphil> woop woop, dats the sound of two collapsing black holes
[15:37] <AndyEsser> "The black holes are the black things in the middle"
[15:37] <fsphil> a real simulation
[15:37] <nick_> Since pretty much all the theories expect them to exist. The interesting part comes later when you can actually study them to distinguish between different models.
[15:37] <daveake> "actually a real computer simulation"
[15:37] <nick_> It is a big achievement to be able to detect the damn things, very tricky to do.
[15:39] <gb73d> g waves have been detected !
[15:40] <fsphil> he's out by a light year there i think
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[15:49] <fsphil> 512hz
[15:52] <kc2pit> Scientific progress goes "bloop" apparently.
[15:52] <fsphil> the signal is quite clear
[15:52] <russss> given the size of the signal that's pretty incredible
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[15:53] <russss> one part per sextillion
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[15:54] <fsphil> 10-21
[15:55] <fsphil> 0.000000000000000000001
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[15:56] <fsphil> it's weird that something can lose mass through gravity
[15:58] <R34lB0rg> yeah, that should also apply to objects made of atoms
[15:59] <Ben-AstroSoc> http://ava.upuaut.net/store/index.php?route=product/product&path=59_65&product_id=119 presumably this is a pretty standard antenna? for use with the 3.3v ublox max-m8q breakout also from upu
[16:00] <Upu> there is nothing special about that antenna apart from I get them made with custom 0.5m cables
[16:00] <Upu> most you get elsewhere have 3 meter cable on which is +35g
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[16:02] <AndyEsser> holy crap
[16:02] <AndyEsser> that's heavy
[16:02] <russss> oh right, Kip Thorne. I wonder if the "this isn't something you'd see in Hollywood movies" comment earlier was a jab at him
[16:02] <Ben-AstroSoc> it's just plug and play as far as the receiver is concerned?
[16:03] <Ben-AstroSoc> never used these on gps enabled quads so
[16:03] <AndyEsser> Ben-AstroSoc: it's a passive antenna - so should just be plug and play :)
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[16:03] <AndyEsser> or err... plug and lock
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[16:03] <Ben-AstroSoc> it says its an active antenna >_>
[16:03] <AndyEsser> o herp derp
[16:03] <AndyEsser> I'm blind as a f'ing bat
[16:04] <Ben-AstroSoc> presumably its the same as the small square antenna you get for drones
[16:05] <AndyEsser> Upu: don't suppose there's a datasheet containing the active circuitry required and also physical dimensions?
[16:05] <AndyEsser> omg
[16:05] Action: AndyEsser neesd to learn to read
[16:05] <AndyEsser> ffs
[16:05] <AndyEsser> physical dimensions are right there
[16:05] <AndyEsser> sorry
[16:05] Action: AndyEsser leaves
[16:06] <Ben-AstroSoc> i'm being double stupif
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[16:06] <Ben-AstroSoc> http://ava.upuaut.net/store/index.php?route=product/product&path=59_60&product_id=51 this already has the bloody antenna - i thought that was a jack for the antenna ...
[16:07] <AndyEsser> I err...
[16:07] <AndyEsser> always thought the same
[16:07] <Ben-AstroSoc> maybe i'll wait for the thing to show up in the mail
[16:07] <AndyEsser> assumed there was an SMA adapter with a rubber cover on
[16:07] <AndyEsser> :)
[16:07] <Ben-AstroSoc> yeah
[16:07] <Ben-AstroSoc> same
[16:08] <Vaizki> oh no there's a wonderful antenna on it
[16:09] <Ben-AstroSoc> *Crosses antenna off shopping list*
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[16:10] <Vaizki> I just used one of those to test how accurate the PPS on it is.. just hooked the module up to 3.3V power and put it on the window sill.. locked right on and gave me a PPS signal which was actually quite good
[16:10] <AndyEsser> those active antennae will be good for mine though
[16:10] <kc2pit> Vaizki: What are you measuring the PPS against that you expect to be more accurate than the GPS?
[16:11] <AndyEsser> counting mississippi's
[16:11] <AndyEsser> :)
[16:11] <Vaizki> a GPSDO with furuno timing GPS and symmetricom OCXO locked on to it
[16:12] <Vaizki> so shortly: a very good gps
[16:12] <kc2pit> Ahh, cool. I was hoping for something with rubidium or cesium involved.
[16:12] <Vaizki> result: http://imgur.com/a/lm6dK
[16:13] <AndyEsser> your scope appears to have a bit of yellowing
[16:13] <AndyEsser> :P
[16:14] <Vaizki> so about 145 ns difference.. and there's 10m of antenna cable on the symmetricom so that's 45ns there
[16:14] <Vaizki> no it's the light + camera
[16:14] <Vaizki> or rather iphone
[16:14] <Vaizki> so the furuno timing gps is supposed to be within 15ns of UTC
[16:15] <Vaizki> and the ublox is off the furuno by about 100ns.. not sure which is correct really but the difference is very small :)
[16:16] <Upu> AndyEsser: thats an active antenna :)
[16:16] <AndyEsser> Upu: yep - we figured that out - and that I was being blind :)
[16:16] <AndyEsser> basically... I should just go commit Sepuku
[16:16] <Upu> ah yes Ben-AstroSoc thats a Sarantel SL1252R
[16:17] <Upu> if Carlsberg made GPS antennas...
[16:17] <AndyEsser> ha
[16:18] <Ben-AstroSoc> just glad i didn't spendmore money if the antenna is on the thing we already bought :p
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[16:45] <LunarMobile> Hello
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[16:50] <LunarMobile> Ready to go to 29km tomorrow
[16:50] <AndyEsser> woo
[16:50] <AndyEsser> how's the weather looking?
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[17:03] <LunarMobile> Quite fine Andy :)
[17:04] <LunarMobile> Little wind, and not too many clouds
[17:05] <LunarMobile> And payload just needs batteries and then close the lid
[17:06] <Laurenceb> https://dogemask.cool/
[17:11] <SpacenearUS> New position from 03KF7RCV-11 after 0313 hours silence - 12http://tracker.habhub.org/#!qm=All&q=KF7RCV-11
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[17:33] <LunarMobile> Hi craag
[17:35] <SM0ULC-Reb> LunarMobile: good luck tomorrow!
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[17:35] <LunarMobile> Thanks :)
[17:37] <nick_> https://physics.aps.org/articles/v9/17 should be a good explanation of the LIGO result for non-physicists.
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[17:49] <craag_web> T-20 minutes to Tim Peake ARISS Contact :) https://principia.ariss.org/live/
[17:52] <R34lB0rg> nick_, I'd rather have the explanation for the physicist
[17:54] <nick_> Well, the paper is not so clear to most people.
[17:54] <R34lB0rg> I'd like to know in detail how they pinpointed the source
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[17:55] <Lunar_Lander> evening
[17:56] <nick_> R34lB0rg: try reading the PRL that page links to.
[17:56] <nick_> (I think it should be free since it's in physics.aps.org
[17:56] <nick_> )
[17:56] <nick_> If not it'll be on arxiv.org
[17:57] <Lunar_Lander> thanks craag_web
[17:57] <craag_web> :)
[17:57] AndroUser2 (~androirc@p54888481.dip0.t-ipconnect.de) joined #highaltitude.
[17:57] <craag_web> Note the colour balance is correct - we *are* in the yellow submarine :P
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[17:57] <Lunar_Lander> :) nice
[17:58] <mattbrejza> look out for the guy in the susf hoodie
[17:58] <mattbrejza> you need a floodlight on the local reciever
[17:58] <mattbrejza> ;)
[17:58] <craag_web> Hah, not in susf hoodie
[17:59] <craag_web> Am left-most on the right of the stage as you see it
[17:59] <nick_> R34lB0rg: the short answer is they don't really know where it is much better than you could wave your arm in a direction.
[17:59] <mattbrejza> ah
[18:01] <mattbrejza> the stream audio is a bit quiet craag_web
[18:01] <lz1dev> bit quiet
[18:01] <Lunar_Lander> experiments confirm or deny hypotheses
[18:01] <Lunar_Lander> :D
[18:01] <mattbrejza> obviously can ramp up the headphones, just need to remember i did it before resuming music
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[18:01] <lz1dev> headphones, you have a deafwish?
[18:01] <mattbrejza> har har
[18:02] <craag_web> mattbrejza: Yeah thanks, PA mixing guy is playing hide and seek on the level :/
[18:02] <craag_web> Right, work time, bbl
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[18:04] <mattbrejza> what freq for those on the websdr?
[18:04] <mattbrejza> oh nm lol
[18:04] <mattbrejza> just scrolled down
[18:06] <Lunar_Lander> yay 12Z prediction also good
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[18:08] <Lunar_Lander> dish rotating it seems
[18:10] <Lunar_Lander> he said hello
[18:10] <lz1dev> http://spacenear.us/sats/
[18:10] <lz1dev> :>
[18:10] <Lunar_Lander> it still sounds like Apollo
[18:10] <Lunar_Lander> :D
[18:11] <mattbrejza> oh noes it broke
[18:11] <lz1dev> :D
[18:11] <Lunar_Lander> "Hi my name is isabella and I am a tape recording"
[18:11] <Lunar_Lander> sorry xD
[18:12] <Lunar_Lander> video!
[18:12] <mattbrejza> shoulda just used skype lol
[18:12] <Lunar_Lander> :D
[18:12] <Lunar_Lander> A/V asynchronous
[18:13] <mattbrejza> heh bue line is still there
[18:13] <Lunar_Lander> :)
[18:13] <fsphil> craag: nice!
[18:14] <Lunar_Lander> I agree
[18:16] <Lunar_Lander> miranda got two questions
[18:17] <fsphil> starting to fade
[18:17] <Lunar_Lander> rocket is more dangerous
[18:17] <Lunar_Lander> what a question
[18:17] <mattbrejza> still got video
[18:17] <lz1dev> its over polland now
[18:18] <Lunar_Lander> well done!!!
[18:18] <fsphil> that worked really well
[18:18] <Lunar_Lander> YAY
[18:18] <lz1dev> nice
[18:19] <Lunar_Lander> "a little thanks for you"?!
[18:19] <Lunar_Lander> why not big thanks
[18:19] <Lunar_Lander> ah :)
[18:20] <Lunar_Lander> yeah congratulations for a world's first
[18:20] <Lunar_Lander> :)
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[18:22] <Lunar_Lander> WELL DONE :)
[18:22] <craag_web> :)
[18:22] <craag_web> yay tv
[18:23] <fsphil> satellite television
[18:23] <Lunar_Lander> :)
[18:23] <craag_web> hehe
[18:24] <Lunar_Lander> :)
[18:24] <mattbrejza> how did the local video receiver do>
[18:24] <fsphil> nooo don't teach the kids that
[18:26] <craag_web> local receiver did well from horizon to horizon
[18:26] <craag_web> +10 to +10 though - so goonhilly did a lot better
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[18:26] <Lunar_Lander> cool
[18:26] <craag_web> goonhilly is our primary unless the internet fails / doesn't exist
[18:26] <mattbrejza> was the constellation wrong or was i not paying attention?
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[18:27] <craag_web> Erm sorry I was distracted :P
[18:27] <craag_web> Didn't notice
[18:27] <mattbrejza> heh
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[18:27] <lz1dev> amateur :P
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[18:32] <Lunar_Lander> https://drive.google.com/file/d/0B1lke6hPHKJDRGVUeXN2S3hKTFU/view
[18:33] <Lunar_Lander> systems ready
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[18:38] <Lunar_Lander> hi fl_0
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[19:03] <mattbrejza> Laurenceb: and you thought your author list was long and hard to deal with: https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.116.061102
[19:07] <SpacenearUS> New vehicle on the map: 03kbuvubknib_chase - 12http://tracker.habhub.org/#!qm=All&q=kbuvubknib_chase
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[19:19] <adamgreig> lol, in my timeline, https://twitter.com/CitizenInventor/status/697848000241102850 Astronaut Tim Peak was just live on chatting over armature radio with video streamed over form Goonhilly
[19:20] <adamgreig> armature radio indeed
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[19:20] <fsphil> impressive lol
[19:21] <Lunar_Lander> :D
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[19:21] <fsphil> looks like they've made that error more than once
[19:23] <Lunar_Lander> yea
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[19:24] <SA6BSS-Mike> what doed the predivtion looks like tomrrow, lunar, in what direction is the ballon traveling??
[19:24] <Lunar_Lander> north-east
[19:24] <Lunar_Lander> will land near Celle
[19:24] <Lunar_Lander> about 150 km
[19:24] <Lunar_Lander> http://predict.habhub.org/#!/uuid=576205c9c0b9bb032509e15b24cda3ddf274684d
[19:25] <SA6BSS-Mike> ah, point my yagi that way, not much chance for me hering it but will have a goo, have tracked over 600km from Warsawa Poland so might see it on waterfall
[19:25] <Lunar_Lander> cool :)
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[19:26] <Lunar_Lander> thank you
[19:26] <SA6BSS-Mike> would say I tracked from my lokcation in south sweden a balloon outside warsawa
[19:27] <SA6BSS-Mike> well, I?m working so hopefully I can sneek away for amoment and remote in
[19:27] <SA6BSS-Mike> good luck!!
[19:27] <SA6BSS-Mike> I have 730 to your launch site
[19:28] <amell> I see theres a bloody launch tomorrow at noon. seems to go over my house.
[19:28] <amell> Bit puzzled as the predict indicates a wet landing, does it have a cutdown?
[19:29] <amell> all launches from this area in the next 7 days end up in the sea
[19:32] <amell> no flight doc either. maybe i wont bother
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[19:33] <SA6BSS-Mike> amell: this one https://groups.google.com/forum/#!topic/ukhas/Y0FtufORL3A
[19:33] <SA6BSS-Mike> ?
[19:33] <Lunar_Lander> thank you :)
[19:34] <amell> nope. this one, https://groups.google.com/forum/#!topic/ukhas/IbLsv65bssU
[19:34] <amell> its an expensive payload. how are they making sure it doesnt go in the sea?
[19:34] <amell> <covers his eyes as he cant bear to watch>
[19:35] <SA6BSS-Mike> Thats one way to go :)
[19:35] <amell> should someone say something?
[19:35] <Lunar_Lander> OK to launch blood into stratosphere?
[19:35] <fsphil> don't see why not
[19:35] <Ian_> Going to get a row boat and chase amell?
[19:35] <amell> nope.
[19:36] <Ian_> Awwww :)
[19:36] <fsphil> dropping blood into the sea might attract unwanted attention
[19:36] <amell> It will need to be seriously overfilled.
[19:37] <fsphil> fire them an email on the list, see if they've planned or it
[19:37] <amell> im banned from the list for some reason so someone else will have to do it.
[19:37] <LazyLeopard> Solves the "washed up on a beach" problem, though, if it ends up being digested by a shark. ;)
[19:37] <fsphil> a whale on the other hand
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[19:47] <fl_0> Lunar_Lander: got the flight approvement from the authorities today
[19:47] <fl_0> :D
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[19:48] <Lunar_Lander> NICE!
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[20:03] <Geoff-G8DHE-Lap> Me neither but will have a look when your up!
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[20:12] <Lunar_Lander> thanks :)
[20:12] <Lunar_Lander> Geoff-G8DHE-Lap, thanks again for the google earth representations of all the flights
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[20:15] <Ian_> Pop in the batteries in the comfort of your own home and put a length of acetate between the battery and holder contact, so that you can remove it to activate the battery pack.
[20:16] <Ian_> No pressure at the launch site, ideal conditions and a cup of coffee afterwards . . . :)
[20:16] <Lunar_Lander> :) cool
[20:18] <Ian_> Good Luck
[20:28] <Lunar_Lander> thanks
[20:28] <Lunar_Lander> it is a strange feeling after 3 years
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[20:32] <Ian_> Best not to admit to strange feelings . . .
[20:35] <Lunar_Lander> yea
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[21:19] <Geoff-G8DHE-Lap> No problem, I'll get you one ready! Might not be until late Friday evening however.
[21:22] <Lunar_Lander> thanks :)
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[21:31] <fsphil> https://www.youtube.com/watch?v=SOrgUMJxm6I
[21:31] <fsphil> the sound without being shifed up in pitch really does sound like something getting sucked up
[21:32] <fsphil> thwoop
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[21:45] <Mark_B> Good evening
[21:48] <Mark_B> I've been reading around checking for issues before committing to moving from Win8.1 to Win10. There is a mix of experiences with fldigi
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[21:48] <Mark_B> Is anyone using Win10 OK with fldigi?
[21:48] <Mark_B> Or vice versa
[21:51] <Babs> The BBC are currently outdoing themselves with technical scientific accuracy https://imgur.com/fFhLh8L
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[21:55] <fsphil> unfortunatly the caption writer is keeping the secret to himself
[21:58] <mfa298> Mark_B: I've run dl-fldigi happily on windows 10
[22:00] <Mark_B> ack, thanks mfa. Much appreciated
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[22:07] <Babs> Hix is alive!
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[22:15] <daveake> Life is so fleeting
[22:18] <Babs> even one of my power hungry trackers lasts longer than 4 minutes
[22:23] <daveake> I bet it gets more sentences out too
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[22:29] <Babs> just as intelligible too
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[00:00] --- Fri Feb 12 2016