[00:00] <craag> pass coming up
[00:00] <craag> woops wrong chan
[00:02] <mattbrejza> where will the video pop up?
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[00:22] <gonzo_nb> iss visual?
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[00:24] <craag> lost gonzo visual..
[00:26] <craag> watching the hamtv from iss
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[00:26] <craag> was the answer
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[00:53] <gonzo_> craag, not gone completely
[00:54] <craag> :)
[00:54] <gonzo_> nice. Would have a liik for it too, but don;t need yet another project
[00:54] <gonzo_> look, even
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[01:39] <SpacenearUS> New vehicle on the map: 03nm5ss-10_chase - 12http://tracker.habhub.org/#!qm=All&q=nm5ss-10_chase
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[09:38] <PE2BZ> !flights
[09:38] <SpacenearUS> 03PE2BZ: There are no flights currently :(
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[09:39] <daveake> If only there was a flight calendar to save people from doing that
[09:43] <chris_99> it looks like the google calendar api is fairly easy to use to insert new items into it, iirc google calendar can also send sms messages, which would notify you if a flight is about to happen
[09:44] <eroomde> i can just see it on xmas day
[09:45] <eroomde> uncle keith looks down into his lap from the table as the family has christmas lunch
[09:45] <eroomde> looks up and startled
[09:45] <eroomde> sweats silently for 30s as the merry conversation happens in a blur all around him
[09:45] <eroomde> stands up and says 'i'm sorry, my hab people need me'
[09:45] <eroomde> and spends the rest of the afternoon in the shack
[09:46] <chris_99> haha
[09:47] <eroomde> maybe someone should launch something that just spits out 'hohoho!' rtty and lora on all available channels
[09:47] <eroomde> a sort of festive ddos
[09:48] <chris_99> heh, whilst taking a small animated santa toy to near space
[09:50] <eroomde> and filming it with a gopro
[09:50] <eroomde> peak hab
[09:50] <eroomde> every gizmodo-quality blog in the land will be all over it
[09:50] <eroomde> and maybe the daily express
[09:50] <chris_99> hehe
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[10:02] Nick change: heathkid|2 -> heathkid
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[10:54] <chris_99> someone 'ere mentioned the rtlsdr isn't brilliant for receiving balloons iirc, why is that out of interest?
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[11:00] <SpeedEvil> High noise floor, and poor intermodulation response
[11:00] <SpeedEvil> Add an amp, and a filter, and it gets lots better.
[11:00] <SpeedEvil> http://ava.upuaut.net/store/index.php?route=product/product&path=72_73&product_id=82
[11:01] <SpeedEvil> http://ava.upuaut.net/store/index.php?route=product/category&path=72_80 even
[11:02] <chris_99> aha, cheers!
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[11:02] <chris_99> what type of connectors are they
[11:02] <chris_99> oh sma
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[11:09] <chris_99> http://www.aliexpress.com/item/100-KHZ-1-7-GHz-all-band-radio-RTL-SDR-receiver-RTL2832-R820T-RTL-SDR/32545459395.html can you tell what connector type that is using, it looks like SMA too i think?
[11:10] <eroomde> looks like it
[11:10] <chris_99> cool
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[11:22] <SpacenearUS> New position from 03SP6NVB-11 after 03a day silence - 12http://tracker.habhub.org/#!qm=All&q=SP6NVB-11
[11:22] <chris_99> just found a more affordable version http://www.ebay.co.uk/itm/111826823925?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
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[11:38] <chris_99> are most connectors on an antenna female?
[11:42] <eroomde> chris_99: can of worms
[11:43] <eroomde> to a very very rough first approximation, i would expect the 'static' half of an rf connection to be female
[11:43] <eroomde> eg on the radio of spectrum analyser or whatever
[11:43] <eroomde> and the thing you screw onto it to be male
[11:43] <eroomde> radio or spectrum analyser*
[11:43] <eroomde> however be careful with SMAs
[11:43] <eroomde> the market is pooluted with RPSMA stuff
[11:43] <chris_99> what's RPSMA?
[11:44] <eroomde> rp = reverse polarity which was a hack introduced with consumer goods to stop epople using off-the-shelf antennas to boost the erp limits beyond regulations
[11:44] <eroomde> so the male connector is actually female inside and vice versa
[11:44] <chris_99> oh weird
[11:44] <eroomde> weird and annoying
[11:44] <eroomde> yep
[11:45] <chris_99> looks like the antennas i'm looking at are n-type so i think i can get http://www.ebay.co.uk/itm/121752329260?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
[11:45] <chris_99> to attach to the dongle
[11:45] <eroomde> so best to just be sure you know what you're getting before putchasing
[11:45] <chris_99> mmm
[11:45] <eroomde> N type is nice
[11:45] <eroomde> N is a great rf connector type and more sutff should use it
[11:45] <eroomde> N to SMA adaptors are ubiquitous
[11:45] <chris_99> how about MCX?
[11:45] <chris_99> that dongle seems to use MCX
[11:46] <eroomde> usually just used in consumer electronics
[11:46] <chris_99> ah
[11:46] <eroomde> i'd avoid
[11:46] <chris_99> do you think i should get an rtlsdr with a SMA connector instead then
[11:46] <eroomde> limited number of cycles iirc, more designed for just clicking the stuff together in production and not really expecting it to ever have to come apart
[11:46] <eroomde> I would try and keep everything i have to be either sma, N or BNC
[11:47] <eroomde> unless there was a really compelling reason not to
[11:47] <eroomde> and keep a suite of adaptors and gender-benders for those various things around somewhere
[11:47] <eroomde> with that lot you probably have all you experimental bases covered
[11:47] <russss> those RTL-SDRs with MCX generally come with a bit of cable with an MCX connector on the end, so I just shove an SMA male on the other end
[11:47] <russss> they're basically disposable anyway
[11:47] <eroomde> for adators and gender-benders, radiall make nice-but-still-affordable ones
[11:47] <eroomde> RS and farnell sell them (and probs ebay)
[11:48] <eroomde> RS own brand a decent too if on more of a budget
[11:48] <eroomde> and ebay will give you whatever chickedy-china ones you want to risk
[11:48] <russss> I got a pile of adaptors from aliexpress, should have bought more and sold some off.
[11:48] <russss> they are decent
[11:49] <eroomde> huber and schuner are great if you have some cash to splash and really care about the 0.1dB tolerance for your lab equipment
[11:49] <eroomde> but wouldn't bother for ham radio
[11:49] <chris_99> it seems the rtlsdrs with sma are a lot dearer alas
[11:49] <eroomde> people do sometimes retrofit an sma on
[11:49] <russss> just get the cheap ones, or splash out on a decent SDR
[11:50] <eroomde> with a soldering iron
[11:50] <eroomde> chris_99: it seems like something like the airspy gets a lot of love from whomever buys one
[11:50] <eroomde> and it looks v good for the money
[11:50] <chris_99> oh nice, i'll look at that
[11:51] <chris_99> but yeah otherwise i'll do what russss said
[11:51] <eroomde> also prog is on here and is the developer
[11:51] <russss> yeah the airspy is meant to be good.
[11:51] <eroomde> http://airspy.com/
[11:51] <russss> but whether it's 10 times better than an RTL-SDR for just fucking around, I don't know. Spend money on a decent antenna first.
[11:52] <eroomde> agreed on that
[11:52] <russss> replacing the SDR later is the easiest bit
[11:52] <chris_99> mmm i'd like to get the moonraker colinear one
[11:53] <russss> discone is also good if you want something wideband for Rx
[11:53] <eroomde> an rtl-sdr + diy replace connector to SMA + habamp + colinear will probably be the cheapest and quicket path to hab-tracking happiness
[11:53] <eroomde> if that's what you want
[11:54] <chris_99> i was wondering, does fl-digi do any kind of auto-tuning, so if the signal drifts freqs it auto-adjusts
[11:54] <eroomde> yes
[11:54] <chris_99> oh neat!
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[11:55] <eroomde> it can track the signal within the audio passband that it can see
[11:55] <russss> fl-digi can do that, but there are issues making it work with SDR receivers.
[11:55] <russss> ah right yeah, it'll track within its passband, but if you want it to tune the radio it's a bit more fiddly
[11:55] <chris_99> ah, so if it drifts too much with an SDR it won't actually retune
[11:55] <eroomde> exactly
[11:56] <russss> theoretically it should work with gqrx but in practice the rigctld protocol is horrific and they don't like to talk
[11:56] <eroomde> but thankfully since people have mostly gone for tcxo-based radios on habs, it's not much of an issue anymore
[11:56] <chris_99> ah cool
[11:56] <eroomde> not like the old days when yada yada yada
[11:56] <chris_99> heh
[11:58] <russss> I'm fiddling with something to demodulate RTTY directly from the SDR to avoid the whole fldigi hassle entirely
[11:59] <russss> just do it with a nice little command line app, should easily be RPi-friendly.
[12:05] <SM0ULC-Reb> russss: minimodem?
[12:08] <russss> I am doing it in gnu radio at the moment, in theory it should be able to decode multiple signals at once that way (and also retune the passband easily)
[12:08] <russss> but presumably you could rtl_fm | minimodem if you so desire
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[12:09] <dbrooke> chris_99: affordable RTL-SDR https://www.cosycave.co.uk/index.php?id_product=83&controller=product and https://www.cosycave.co.uk/index.php?id_product=86&controller=product
[12:09] <SM0ULC-Reb> russss: i'm playing with rtl_fm => ssb => wspr-decoder
[12:09] <SM0ULC-Reb> russss: also had to play a bit with rpitx and minimodem..
[12:09] <russss> cool
[12:10] <chris_99> ooh cheers dbrooke, so that dongle has an MCX connector on?
[12:10] <russss> I nearly have my rooftop SDR setup running.
[12:10] <dbrooke> chris_99: yes, so also get the adapter lead I linked
[12:10] <chris_99> okey dokey, that seems a great price, cheers
[12:11] <dbrooke> strange site, but I've had RTL stuff from them
[12:11] <chris_99> actually don't i need https://www.cosycave.co.uk/index.php?id_product=84&controller=product for MCX?
[12:12] <dbrooke> that's the newer, possibly better, version - they both have MCX
[12:13] <chris_99> aha cool
[12:13] <chris_99> is it a UK company i can't tell
[12:13] <chris_99> oh it says 2-3 day delivery :)
[12:14] <SM0ULC-Reb> russss: how do you input data rtl_tcp?
[12:14] <dbrooke> the phone number 8-) I think channel islands actually
[12:15] <chris_99> aha
[12:16] <dbrooke> a bit vague really
[12:16] <dbrooke> anyway I got my stuff OK
[12:17] <chris_99> cool, gonna order from them now
[12:17] <dbrooke> t&c page says Jersey
[12:17] <russss> yeah I have a box with a preamp, a handful of RTL-SDRs, a RPi, and some homebrewed power-over-ethernet. It'll handle at least 2, possibly 3 RTL-SDRs worth of rtl_tcp
[12:17] <russss> but am aiming on using it to see how much I can do directly on the RPi2
[12:19] <jcoxon> russss, any obviously a ukhasnet gateway while your there
[12:19] <jcoxon> and*
[12:19] <russss> yeah I need to sort that bit out
[12:21] <craag> :D
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[12:29] <crow_> Absolute complete n00b here. Recently acquired a PITs board and am currently learning the ropes. Is there any one online now with experience with the board?
[12:29] <crow_> or could point me to an online resource for info [other than the official PITs page]?
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[12:31] <SM0ULC-Reb> crow_: quite some info at the ukhas site
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[12:33] <crow_> SMOULC-Red: ah ha! much appreciated, im having a good read now. cheers
[12:39] <SM0ULC-Reb> crow_: backup picotracker recommended.. dave's checklist is a very good one
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[12:39] <iooner-> Hi!
[12:41] Nick change: iooner- -> iooner
[12:46] <crow_> SMOULC-Reb: I'm I right in assuming a picotracker is essentially a separate GPS/telemetry board with separate power supply?
[12:46] <SpeedEvil> yes
[12:46] <SpeedEvil> ideally seperate PSU, anyway
[12:46] <crow_> [so much to learn]
[12:50] <chris_99> i assume http://ava.upuaut.net/store/index.php?route=product/product&path=72_80&product_id=136 can only be used to receive signals?
[12:54] <dbrooke> yes
[12:56] <dbrooke> it will die if you transmit into it
[12:58] <SpeedEvil> In principle, it could amplify very small signals enough to be recieved locally. I feel compelled to make this basically useless point. (no reasonable transmitter will have an output lower than the output that the amp could get to at max)
[12:59] <craag> > it will die if you transmit into it
[12:59] <craag> +1 can affirm ;)
[12:59] <SpeedEvil> :)
[12:59] <chris_99> HEH OH DEAR
[12:59] <chris_99> oops sorry caps
[12:59] <craag> appropriate caps :)
[12:59] <chris_99> hehe
[13:00] <chris_99> does anyone recall the voucher code for http://ava.upuaut.net or did it expire
[13:00] <dbrooke> I killed a habamp by just switching on a transceiver which was connected to it. It must have either transmitted or sent a DC pulse up the coax.
[13:03] <crow_> hmmm, still having trouble locating the telemetry string structure for the PITS board in its default setting. Can anyone point me to that info?
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[13:27] <Laurenceb> any rocketry people around?
[13:27] <Laurenceb> I was wondering if anyone has looked at stuff >mach 2
[13:27] <Laurenceb> I'm seeing a massive decrease in stabilisation from rear mounted fins at higher mach numbers, wondered if that was a well known effect
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[13:46] <SpacenearUS> New position from 03F4HHV after 0320 hours silence - 12http://tracker.habhub.org/#!qm=All&q=F4HHV
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[14:04] <daveake> crow_ See http://www.pi-in-the-sky.com/index.php?id=getting-on-the-map
[14:07] <crow_> daveake: very much appreciated!
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[14:34] <Lunar_Lander> hello
[14:34] <Lunar_Lander> http://gerblook.org/pcb/nqTNguW9yKYEDf3Vqujq69#front
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[14:52] <eroomde> really nice work Lunar_Lander
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[14:52] <eroomde> i'd say go for it
[14:52] <Lunar_Lander> thank you :)
[14:52] <eroomde> i assume the square pins on the connectors are for pin 1/
[14:52] <eroomde> ?
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[14:56] <Lunar_Lander> yes
[15:06] <Laurenceb> eroomde: is it a well known effect that rocket fin lift coefficient decreases significantly with increasing mach number?
[15:10] <SpeedEvil> isn't that pretty much a subset of conventional aerodynamic performance?
[15:11] <Laurenceb> yes lol
[15:11] <Laurenceb> I suck at aerodynamics
[15:11] <SpeedEvil> but won't the stuff in the shock cone get ~0 effect?
[15:11] <SpeedEvil> hmm
[15:12] <Laurenceb> yeah that seems to be more or less what happens
[15:12] <Laurenceb> and stuff around the base gets even messier air
[15:13] <Laurenceb> above mach 2.5 or so base mounted fins seem to be fairly useless unless they are very long or large
[15:13] <SpeedEvil> Do any 'proper' hypersonic missiles have fins?
[15:14] <Laurenceb> good question
[15:16] <Laurenceb> https://en.wikipedia.org/wiki/Boeing_X-51
[15:16] <Laurenceb> they are pretty bug tho
[15:16] <Laurenceb> *big
[15:16] <SpeedEvil> And plausibly exceeding the shock cone
[15:16] <SpeedEvil> (at the ends)
[15:19] <Laurenceb> yeah
[15:19] <Laurenceb> at mach 5 the shock cone gets smaller
[15:20] <Laurenceb> I'm tempted to stick canted fins on the nose to increase spin rate
[15:22] <SpeedEvil> How unstable is the current rate?
[15:23] <Laurenceb> with the Estes spin motor, stability factor is only 0.12
[15:23] <Laurenceb> thats kind of bad
[15:24] <SpeedEvil> Are we talking major boost instabilty, or post.
[15:24] <Laurenceb> worst case stability factor is at burnout
[15:24] <Laurenceb> so adding 6x3mm canted fins can fix it
[15:25] <SpeedEvil> hmm
[15:25] <Laurenceb> I think... still improving sim code
[15:25] <Laurenceb> its basically 13 dof + aerodynamics look up table
[15:25] <SpeedEvil> scary :)
[15:25] <Laurenceb> so pos, vel, attitude quaternion and euler rates
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[16:07] <Laurenceb> simulation says yes
[16:07] <Laurenceb> in fact the two ideas compliment each other really well
[16:08] <Laurenceb> small motor based spin up for initial stability, then nose mounted canted fins kick in once its up to mach 2 or so
[16:09] <SpeedEvil> I guess fin imbalance isn't a major issue
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[16:11] <Laurenceb> fins are like milligrams
[16:11] <SpeedEvil> I mean aero
[16:11] <Laurenceb> they could even just be polyamide film
[16:11] <Laurenceb> no, as its spinning
[16:11] <SpeedEvil> yeah
[16:11] <Laurenceb> in fact I suspect a single fin may be optimal
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[16:37] <iooner> Hi!
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[16:50] <eroomde> hi iooner
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[17:01] <iooner> Check ur work from Belgium it's amazing
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[17:51] <Chimpusmaximus> Any one aware of anybody who can reuse old phones and tech? I have for example a number of old android phones and iPod touch
[17:52] <eroomde> old old phones can be used for gsm backup
[17:52] <eroomde> many have serial ports which act as modems - you can send SMS easily
[17:53] <eroomde> don't know about recent-old phones like ipods
[17:53] <eroomde> does the ipod no longer playmusic or something?
[17:53] <eroomde> that is presumably what it was bought for
[17:54] <Chimpusmaximus> yeah i guess they old enough that iOS is a few version behind etc. don't get me wrong if i had a need i would hold onto them, just gets to point i need to clear some space.
[17:55] <Chimpusmaximus> have loved into using the Defy for gsm backup etc.
[17:55] <Chimpusmaximus> loved/looked
[17:55] <eroomde> well, have a poke for gsm modeming
[17:55] <eroomde> the old android phones will probably work as self-contained backups
[17:55] <eroomde> you could write an android app that askes for a gps location and texts it to you
[17:55] <Chimpusmaximus> its like the canon powershot A70 and poweshot s80 i stopped my sister throwing away.
[17:55] <eroomde> on demand
[17:56] <SpeedEvil> Or 3g-wifi thingies
[17:56] <SpeedEvil> Or webcams
[17:56] <SpeedEvil> motion-detect software is avaialble - just run power
[17:57] <Chimpusmaximus> true, just think i got to a point i have to much stuff like that and before it gets to old i wanted to pass it on. Sadly i don't have any local hack or maker groups.
[18:08] Nick change: iNeo -> PE0SAT
[18:12] <Lunar_Lander> iooner, hello!
[18:12] <Lunar_Lander> happy to see new people anytime
[18:37] <iooner> Lunar_Lander hellow :)
[18:37] <iooner> Big interest for a launching in belgium
[18:37] <Lunar_Lander> nice to hear that
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[19:12] <iooner> Lunar_Lander but is really a challenge
[19:13] <eroomde> it's not, technically. There's a very strong community and an expansive, if disorganized, wiki
[19:13] <eroomde> so it's very doable
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[19:48] <Beam> hello there
[19:49] <Beam> I need some help connecting my tracker with habhub
[19:49] <Beam> i use fldigi and hdsdr
[19:50] <Beam> I just made a payload configuration document
[19:50] <Beam> and I can see my payload (grounded of course) pop up in the list of payloads in fldigi
[19:51] <Lunar_Lander> ah I think someone has to approve the document before it appears on the website
[19:51] <Beam> however I can't select it in the 'flight' dropdown menu (clicking it does nothing)
[19:51] <Beam> o really?
[19:51] <Upu> hey Beam
[19:51] <Beam> hey
[19:51] <Upu> yeah to appear there it needs to be approved however you can click all payloads testing and get it from there
[19:51] <Upu> or just set dl-fldigi manually
[19:51] <Upu> I.e baud etc
[19:52] <Beam> i set all those things to the settings I found in my tutorial
[19:52] <Upu> if you decode and upload and there is a valid document it will appear on the map
[19:52] <Beam> I don't think I fully understand you yet
[19:52] <Upu> no problems
[19:52] <Upu> so there are payload documents
[19:52] <Beam> yes
[19:52] <Upu> and flight documents
[19:52] <Beam> uhuh
[19:53] <Upu> payload describes what the payload is transmitting
[19:53] <Beam> yeah
[19:53] <Upu> and don't need to be approved
[19:53] <Beam> i see where this is going XD
[19:53] <Beam> but please continue
[19:53] <Upu> flight documents come in when you want to launch, they conver where and when and what payload documents are used
[19:53] <Upu> they need to be approved
[19:53] <Beam> i see
[19:53] <Upu> so for testing you just need a payload doc
[19:53] <Upu> so
[19:53] <Upu> are you transmitting at the moment ?
[19:54] <Beam> yes
[19:54] <Upu> ok can you see it in HDSDR ?
[19:54] <Beam> yes
[19:54] <Beam> and in fldigi too
[19:54] <Upu> ok
[19:54] <daveake> Is this payload called "FRANKR " ?
[19:54] <Beam> yes!
[19:54] <Beam> thats me
[19:54] <daveake> You don't have a payload doc yet
[19:54] <Upu> :)
[19:54] <daveake> Or if you do, the payload ID doesn't match
[19:54] <Beam> :)
[19:54] <Upu> For debugging
[19:54] <Upu> http://habitat.habhub.org/logtail/
[19:55] <Beam> I don't think I have it
[19:55] <Beam> yeah I saw that logtail stuff
[19:55] <daveake> <Beam> I just made a payload configuration document
[19:55] <daveake> So, erm, do you?
[19:55] <SpacenearUS> New position from 03F4HHV after 036 hours silence - 12http://tracker.habhub.org/#!qm=All&q=F4HHV
[19:55] <Beam> I saw that there was indeed a lot of 'can't find/connect to payload document
[19:55] <Upu> Is this a Habduino ?
[19:55] <Upu> PITS
[19:55] <Beam> a PITS
[19:56] <Beam> I don't have a flight document
[19:56] <Upu> ok fairly easy then you can just copy one
[19:56] <daveake> You don't need one
[19:56] <daveake> http://www.pi-in-the-sky.com/index.php?id=getting-on-the-map
[19:56] <Beam> damn
[19:56] <daveake> ^ tells you how to create the payload doc
[19:56] <Upu> or that
[19:56] <daveake> It's as if we thought about this :)
[19:57] <Beam> I made a payload configuration document (if I'm correct three of them woops)
[19:57] <daveake> All wrong tho
[19:57] <Beam> o allright
[19:57] <Beam> so...
[19:57] <daveake> See that link of mine
[19:57] <Beam> yeah I used that link
[19:57] <Beam> do you know what I did wrong>
[19:57] <Beam> ?*
[19:58] <daveake> At a guess, payload ID in the doc doesn't match the one you're sending
[19:58] <Beam> that would be weird
[19:58] <Beam> I'm pretty sure I used FrankR for both
[19:58] <Beam> let me check
[19:58] <daveake> Might be a case-sensitive thing
[19:59] <Beam> yeah my callsign is FrankR in fldigi too
[19:59] <daveake> logtail shows it in upper case
[19:59] <Beam> hmm
[19:59] <Beam> so FRANKR?
[19:59] <daveake> See the logtail http://habitat.habhub.org/logtail/
[19:59] <daveake> That's what you're uploading
[20:00] <daveake> and it doesn't match any payload doc
[20:00] <Beam> allright
[20:01] <Beam> I'm going to make a new one then allright?
[20:01] <daveake> I can't see any payload docs called "frankr"
[20:01] <Upu> Start From Existing
[20:02] <Upu> and that :)
[20:02] <Ian_> Maybe FrankR daveake!
[20:02] <Upu> I'll shut upo
[20:02] <Beam> XD
[20:02] <daveake> Ian_, No the genpayload search is case-insensitive
[20:03] <daveake> No frank anythings upp[er or lower
[20:03] <Ian_> OK, learned something there then!
[20:05] <Beam> when we started talking I also changed the callsign that was in fldigi to FRANKR because this whole package I bought came with a paper that had the callsign and frequency on it and I wasnt totally sure whether it was FrankR or FRANKR so I just did something. Is it okay to change it in fldigi or is everything going to fail now? XD
[20:05] <Upu> where did you buy it from ?
[20:05] <eroomde> heh
[20:05] <eroomde> the plot thickens
[20:05] <Beam> sentintospace.com
[20:06] <Upu> may I ask how much ?
[20:06] <eroomde> they're selling pits now?
[20:06] <Beam> way too much I assume...
[20:06] <Upu> I don't know until you tell me :)
[20:07] <Beam> true but I don't want to sound like a complete and total idiot when I tell you it cost me 400 pounds and hear from you guys that the DIY kit would have cost me 25% of that
[20:07] <Beam> but there you go XD
[20:07] <Beam> ridicule me
[20:07] <eroomde> too late
[20:07] <Beam> true
[20:07] <Upu> what did it come with ?
[20:07] <Upu> Raspberry Pi, Balloon etc ?
[20:08] <Upu> anyway whatever of no heed
[20:08] <Upu> lets get you on the map
[20:08] <Beam> temperature sensor, gps radio antenna, sending antenna, battery pack ofcourse, camera for PITS and a PITS
[20:08] <eroomde> maybe the wiki should have something in red along the top
[20:08] <Beam> true
[20:08] <Beam> I just made a new document paying more attention to the caps
[20:09] <Beam> is this one okay?
[20:09] <Upu> don't worry about selecting a payload in dl-fldigi
[20:09] <Beam> wow i was just doing that
[20:09] <Upu> as long as the baud and stop bits and stuff are correct
[20:09] <Upu> it will decode
[20:09] <Beam> you sir are of the nsa
[20:09] <eroomde> also don't worry about the callsign you put into fldigi - that's irrelevent in this process
[20:09] <Beam> yes
[20:09] <Beam> okay
[20:09] <Upu> all you need to do is decode the signal at this point
[20:09] <Beam> allright
[20:09] <Upu> which shouldn't have changed to what you were doing before
[20:09] <Beam> allright
[20:10] <Upu> so are you recieving it and decoding now ?
[20:10] <Beam> yes
[20:10] <Lunar_Lander> "(a feat only recently repeated by Felix Baumgarten)"
[20:10] <Lunar_Lander> baumgartner!
[20:10] <Upu> ok I see
[20:10] <Lunar_Lander> the man was called Baumgartner!
[20:10] <Lunar_Lander> man
[20:11] <eroomde> bumgarden, yes
[20:11] <Beam> this is a direct copy: $$FRANKR,325,19:54:22,51.98121,4.35918,00019,0,0,8,19.3,4.1,175,22.2*E15A $$FRANKR,326,19:54:25,51.98121,4.35919,00019,0,0,8,19.4,4.1,175,22.2*1B9E
[20:11] <eroomde> like it says
[20:11] <Upu> yep
[20:11] <Beam> which is true
[20:11] <Upu> ok there is a payload doc now
[20:11] <Upu> let me check why its not working
[20:11] <Beam> cool
[20:11] <Beam> is it correct?
[20:11] <Beam> okay
[20:11] <Ian_> upu you need to have a SNU support call counter!
[20:12] <Copyright> -.-
[20:12] <Upu> ok
[20:12] <Upu> so the issue is Beam when you've made the document called FRANKR
[20:12] <Upu> you've not changed the call sign in Parser configuration to FRANKR
[20:13] <Upu> so go back , start from existing, amend the parser configuration so the call sign is FRANKR
[20:13] <Upu> save itr
[20:13] <Upu> and the bot will do the rest
[20:13] <Beam> itr?
[20:13] <Beam> the rest I understand
[20:13] <Beam> thanks
[20:13] <Upu> its like "it" but typed by a Yorkshire man who's had one shandy too much
[20:14] <Beam> allright LOL
[20:15] <Beam> okay I can't find the parcer configuration
[20:15] <Beam> i feel a bit stupid
[20:15] <Upu> http://habitat.habhub.org/genpayload/
[20:15] <Upu> start from existing
[20:15] <Upu> search for FRANKR and pick either
[20:16] <Upu> the next page has parser configuration, click EDIT next to it
[20:16] <Upu> amend the call sign in there
[20:16] <Upu> I may have to start Ian_ :)
[20:16] <Beam> allright
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[20:17] <eroomde> Beam: just so you know, Upu and daveake designed PITS
[20:17] <eroomde> the usual thing is just to buy one directly from them
[20:18] <eroomde> sent into space insist on doing stuff weirdly and badly and too expenseively and never talk to us
[20:18] <Beam> WOW
[20:18] <eroomde> that you've found us increases your chance of not messing all this up a great deal
[20:18] <Beam> O MY GOD THATS SO COOL!
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[20:18] <Beam> yeaaaah thats true
[20:18] <Beam> my eyes couldnt be more open right now
[20:18] <Beam> I have a lot of respect for you guys
[20:18] <Beam> ok let me focus XD
[20:18] <Beam> I found the parser config
[20:19] <Beam> and I changed the callsign
[20:19] <Upu> save it
[20:19] <Beam> i want to say one more thing before I save it
[20:20] <Beam> because I also have an external temperature sensor like I said before, but right now there is no field called temperature_external or something like that. Is that a problem?
[20:20] <Upu> yeah probably hang on
[20:20] <Beam> okay
[20:20] <Upu> $$FRANKR,896,20:20:16,51.98119,4.35917,00007,0,0,9,19.5,4.1,175,22.7*EEC4\n
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[20:20] <eroomde> that's quite east
[20:20] <Upu> ok
[20:21] <Upu> click add normal field
[20:21] <Beam> i live in the netherlands
[20:21] <Beam> okay
[20:21] <Beam> done
[20:21] <Upu> click in the "field name box"
[20:21] <Ian_> Whew, not the North sea! :)
[20:21] <eroomde> so you do!
[20:21] <eroomde> i know the hague a bit
[20:21] <Upu> temperature external
[20:21] <Beam> awesome!
[20:21] <Upu> change it to a float
[20:21] <Upu> save
[20:21] <eroomde> u used to visit ESTEC (noordwijk) a bit for work
[20:21] <Beam> okay from now on i focus on upu but i am interested in the rest
[20:21] <Beam> agem
[20:21] <eroomde> big ESA campus
[20:21] <Beam> ahem
[20:22] <Beam> yes
[20:22] <eroomde> lol yes concentrate on upu as he is the signal atm, i'm just noise :)
[20:22] <Upu> hah
[20:23] <Beam> all right I changed it to temperature external and float
[20:24] <Beam> just save?
[20:24] <eroomde> https://www.google.co.uk/maps/place/51%C2%B058'52.3%22N+4%C2%B021'33.0%22E/@52.2482454,4.4388115,722m/data=!3m1!1e3!4m2!3m1!1s0x0:0x0
[20:24] <Upu> yep
[20:24] <eroomde> someone wants to hide something
[20:24] <Upu> carry on uploading
[20:24] <Beam> allright
[20:24] <Upu> wierd how to draw attention to yourself
[20:25] <Beam> okay so i saved it and now I'm back in the general document page
[20:25] Htbrdd- (~Htbrdd@irc.privateirc.com) left irc: Ping timeout: 276 seconds
[20:25] <Beam> if you understand what I mean
[20:25] <Upu> save again
[20:25] <Beam> okay
[20:25] <Beam> done
[20:25] <SpacenearUS> New vehicle on the map: 03FRANKR - 12http://tracker.habhub.org/#!qm=All&q=FRANKR
[20:25] <Beam> WOW
[20:25] <Beam> should I copy the document ID?
[20:25] <Beam> awesome!!!
[20:26] <Upu> http://i.imgur.com/QRe37Yu.gif
[20:26] Action: Upu passes the signal to eroomde
[20:26] <Beam> dude you guys
[20:26] PI4GV (~PI4GV@ left irc: Ping timeout: 276 seconds
[20:26] <Beam> lots of love for you
[20:26] <Beam> okay but now just press done and select it in fldigi?
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[20:27] <Upu> you don't even need to do that
[20:27] <Beam> allright
[20:27] <Beam> so what do I do now?
[20:27] Ojo (pieter@2601:c6:c002:cdda:2832:4cbb:88d8:6c23) joined #highaltitude.
[20:28] <Beam> AH MAN I CAN SEE ME!!!
[20:28] <eroomde> wave
[20:28] <Beam> all of you guys thanks so so so much
[20:28] <Lunar_Lander> yay!
[20:28] <Beam> this means so much to me my friend and I have been working so hard on this part and we just didnt get it working
[20:30] <Upu> plug in a camera
[20:30] <Upu> as it doesn't seem to be working
[20:30] <Upu> http://ssdv.habhub.org/
[20:30] <Beam> so when I want to do the actual flight, is there anything more I should do?
[20:30] <Beam> yeah about that
[20:30] <Upu> yes you need to make a flight doc
[20:30] <Beam> I actually have plugged in the camera
[20:31] <Beam> and it worked a few days ago
[20:31] <Beam> but now it doesnt
[20:31] <Upu> ok so check the connection
[20:31] <Upu> check its enabled in raspi-config
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[20:31] <Upu> those cameras are like USB cables i never get them right way round first time
[20:31] <Beam> It's still the way it was delivered
[20:32] <Beam> like i never took it out
[20:32] <daveake> Beam there are some guides at www.pi-in-the-sky.com, and loads more info at www.ukhas.org.uk
[20:32] <Upu> well its not working now
[20:33] <Upu> was it supplied with a Raspberry Pi B or A ?
[20:33] <Beam> daveake I should take a look there thanks
[20:33] <Beam> allready did a bit
[20:33] <Beam> a lot*
[20:33] <Beam> upu i'll take a look
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[20:33] <Upu> does it have a network card on it ?
[20:34] <Upu> socket
[20:34] <Beam> hmm all I can see is that it says raspberry pi V2.4
[20:35] <Upu> no 2.4 is the PITS version
[20:35] <Upu> does it have a network socket on it ?
[20:35] <Beam> I have to be frank ;) I don't know what that looks like
[20:36] <Upu> take a picture
[20:36] <Upu> lets see it
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[20:36] <Ian_> Is there an RH45 network connector on the Pi itself?
[20:36] <Beam> ehm allright but how do you intend i upload that
[20:37] <Upu> imgur.com
[20:37] <Beam> o okay
[20:37] <daveake> Does it look like this https://www.raspberrypi.org/wp-content/uploads/2014/11/A-_Overhead.jpg
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[20:38] Nick change: Crashjuh_ -> Crashjuh
[20:38] <Beam> I'm making the picture
[20:38] <daveake> or this http://www.linuxuser.co.uk/wp-content/uploads/2014/07/RaspberryPiB+.png
[20:38] <Beam> because I want to say yes but then again I don't have a clue whether that would be correct or not
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[20:41] <Beam> it looks the most like the first picture
[20:41] <Upu> lets see a pic
[20:41] <Beam> yeah
[20:41] <Beam> I took it
[20:41] <Beam> now I'm going to upload to imgur
[20:41] PI4GV (~PI4GV@ left irc: Ping timeout: 264 seconds
[20:41] <Beam> but I have to make an account and stuff like that so it'll take a while sorry
[20:42] <eroomde> no
[20:42] <eroomde> you don't need to
[20:42] <eroomde> and it won't take a while
[20:42] <eroomde> just press the upload button
[20:42] <eroomde> you don't need an account. i promise. don't sign up for anything.
[20:44] <Beam> kay
[20:48] <Beam> almost there
[20:50] <Beam> http://imgur.com/j4jtuAK
[20:50] <Beam> there we go
[20:51] <Beam> hope that picture is good enough
[20:51] <eroomde> good enough to see it's a model a
[20:51] <Upu> yeah its an A
[20:51] <Beam> awesome
[20:51] <Beam> so
[20:51] <Beam> what now
[20:51] <Beam> XD
[20:51] <Upu> got a HDMI monitor and a keyboard ?
[20:52] <Upu> you need to power the unit up with a monitor in it
[20:52] <Upu> so we can see what the output of the start up is
[20:52] <Beam> eeehm
[20:52] <Beam> I have that yes
[20:52] <Beam> yes
[20:52] <Upu> and
[20:52] <Upu> peel the sticker off the camera...
[20:53] <Beam> yes I wanted to do that when we launched
[20:53] <Beam> a bit afraid to damage anything
[20:53] <Beam> but I will XD
[20:53] <Beam> so what do I do?
[20:53] <Upu> USB keyboard in the Pi
[20:53] <Upu> HDMI monitor in the Pi
[20:53] <Upu> reboot
[20:53] <Upu> login (pi/raspberry)
[20:54] <Beam> allrigth
[20:54] <Beam> this may take a while
[20:54] <Upu> take your time :)
[20:56] <Beam> just for my info
[20:56] <Beam> wait never mind
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[21:03] <Beam> okay I have everything
[21:03] <Beam> and i can see the startup
[21:03] <Beam> but then it goes to 'no signal'
[21:04] <Upu> yeah thats probably because its set to go off in the config file
[21:04] <Upu> open the SD on your POC
[21:04] <Upu> PC
[21:04] <Upu> edit pisky.txt
[21:04] <daveake> That's not the default setting; suspect lostinspace changed it
[21:05] <Beam> XD
[21:05] <Upu> disable_monitor=N
[21:05] <Upu> lol
[21:05] <Beam> okay so before I do anything I want to be 100% sure I can't screw it up somewhere (by my own fault)
[21:06] <Upu> Hey Beam
[21:06] <Beam> yeah
[21:06] <Upu> stop fretting you can start from scratch with no issues
[21:06] <Upu> in fact I recommend you break it
[21:06] <Upu> so you know how to fix it
[21:07] <daveake> Which is (most of the reason) why we don't do a prebuilt SD card or image
[21:07] <Beam> that's true but still we have a pretty gruesome deadline for when to finish our paper (which we are going to do with the HAB)
[21:07] <Beam> and I don't want me getting nice pictures get in the way of that
[21:07] <Upu> when is the dead line ?
[21:07] <daveake> 30 mins to set up the SD card
[21:07] <Beam> next week
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[21:07] <Beam> first deadline
[21:07] <Beam> like the real one is a month from that
[21:07] <Beam> but the first thing we need to hand in is then
[21:09] <Beam> so what do we do?
[21:09] <Upu> go change the pisky.txt
[21:09] <Beam> by the way I can see the camera's LED flash on from time to time
[21:10] <Beam> okay how do I do that...
[21:10] <Upu> disable_monitor=N
[21:10] <Upu> put the SD card in a PC
[21:10] <Upu> edit the file
[21:10] <Beam> allright
[21:10] <Upu> do it in notepad++ or somethjing
[21:10] <Upu> not notepad
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[21:17] <Beam> okay it's in
[21:17] <Beam> there was immediately a warning
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[21:18] <Beam> a message that said that there is a problem with the files on the sd card
[21:18] <Beam> but I can see all the files now
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[21:18] <Upu> ok
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[21:18] <Upu> type sudo killall tracker
[21:18] <Upu> then cd pits/tracker
[21:19] <Beam> what
[21:19] <Beam> killall?
[21:19] <daveake> Not sure that will help on his PC :p
[21:19] <Upu> oh
[21:19] <Upu> sorry
[21:19] <daveake> do keep up with your own steps :p
[21:19] <Upu> lol
[21:19] <Beam> that doesnt sound very 'keep stuff alive'
[21:19] <Beam> XD
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[21:19] <Upu> open pisky.txt in notepad++
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[21:20] <Beam> can you maybe tell me the further steps so that I know what I'm getting myself into
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[21:20] <Upu> yeah you're just enabling the monitor
[21:20] <Upu> so you can see whats going on
[21:20] <Upu> editing a text file
[21:20] <Beam> o right
[21:20] <Beam> that makes sense
[21:20] <Beam> I thought we were going to do the camera thing already XD
[21:21] <Upu> we can get diagnostics on the camera
[21:21] <Beam> allright
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[21:22] <Beam> almost there
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[21:25] <Beam> okay I'm in pisky.txt
[21:25] <Upu> disable_monitor=N
[21:26] <Beam> I need to set disable monitor=N to disable monitor=Y ?
[21:26] <Beam> long shot
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[21:26] <Beam> o wait
[21:26] <Beam> never mind
[21:26] <Beam> now I see
[21:26] <Beam> lol
[21:26] <Upu> its already N ?
[21:26] <Beam> no its set to Y
[21:27] <Upu> change it to N
[21:27] <Upu> save
[21:27] <Beam> i did
[21:27] <Upu> stick it back in pits and rebot
[21:27] <Upu> reboot
[21:27] <Beam> on it
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[21:28] <Beam> just for my information
[21:28] <Beam> why would they disable monitor???
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[21:28] <Upu> saves power
[21:28] <Beam> they = sentintospace
[21:28] <Beam> aaaaah
[21:28] <Beam> okay
[21:28] <Upu> and do put it back when we have finished diagnostics
[21:29] <Beam> i will
[21:30] <Beam> okay it's booting up
[21:31] <Beam> omg
[21:31] <Beam> I saw it taking a pictuer
[21:31] <Beam> there was a
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[21:31] <Beam> there was a nerror
[21:31] <Beam> an error
[21:32] <daveake> which said .........
[21:33] <Beam> it said 'error output file: keep/07_08_15/02_19_22.jpg no output file will be generated
[21:34] <daveake> I strongly suggest you build a new SD card image
[21:34] <daveake> Whoever set that one up a) used an old version and b) got it wrong
[21:35] <Beam> allright
[21:35] <daveake> your immediate problem btw could well be that the card is now full
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[21:35] <Beam> yeah that could very well be
[21:36] <Beam> because we've been using this a lot
[21:36] <Beam> without ever knowing that
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[21:36] <daveake> ok well there's a quick method of deleting the image files
[21:36] <Beam> but I told that friend of mine to turn it off when he didnt use it for this exaxt reason
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[21:36] <Beam> tell me
[21:37] <daveake> Well, there is now; not sure it was there on the version you have :/
[21:37] <Beam> o
[21:37] <daveake> Create a file clear.txt on the SD card, from your PC
[21:38] <daveake> Then start the Pi up again
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[21:38] <daveake> It can also be done from Linux on the Pi, but the above is probably easier for you
[21:39] <Beam> allright
[21:39] <Beam> will do
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[21:39] <Beam> by the way
[21:39] <Beam> what is the proper way to turn the pi off>
[21:39] <Beam> ?*
[21:39] <Beam> because it feels really weird just unplugging the batteries everytime
[21:40] <daveake> OK, on your keyboard, press ALT-F2
[21:40] <daveake> You'll see a login prompt
[21:40] <daveake> Login as user "pi" and password "raspberry"
[21:42] <Beam> okay I did
[21:42] <Beam> this is so cool btw
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[21:42] <Beam> sorry nerding out over here
[21:42] <daveake> Then type cd pits/tracker
[21:42] <Beam> can I ask what we're going to do>
[21:42] <daveake> and then (and please get this bit right!) sudo rm -rf keep
[21:42] <Beam> is this for clearing the sd card?
[21:42] <daveake> of jpeg files yes
[21:42] <Beam> ok
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[21:43] <Ian_> daveake pwd to check location ?
[21:43] <Beam> okay now i'm going to type sudo rm -rf keep
[21:43] <Beam> what happens if I get this wrong?
[21:44] <Ian_> Type pwd before you do anythig to check that you are indeed in the right directory
[21:44] <daveake> depends how wrong you get it :/
[21:44] <Ian_> that should give you confidence
[21:44] <Beam> it says
[21:44] <Ian_> pwd displays the present working directory
[21:45] <Beam> home/pi/pits/tracker
[21:45] <Ian_> back to you dave
[21:45] <daveake> do the sudo thing
[21:45] <Beam> and then pi@raspberrypi ~/pits/tracker $
[21:45] <Beam> is that correct?
[21:46] <Beam> okay I'll do it
[21:46] <daveake> yes
[21:46] <Beam> ok i did it
[21:47] <Beam> now there is just another line like the one before
[21:47] <daveake> go on
[21:47] <Beam> with what?
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[21:47] <daveake> what line?
[21:47] <Beam> it says:
[21:48] <Beam> pi@raspberrypi ~/pits/tracker $
[21:48] <Beam> and then nothing
[21:48] <daveake> er yes, that's correct
[21:48] <Beam> fwew
[21:48] <Beam> so now?
[21:48] <daveake> Press ALT+F1 and look at the messages
[21:48] <daveake> any errors now?
[21:48] <Beam> ok
[21:48] <Beam> YEAH!
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[21:49] <Beam> nope
[21:49] <Ian_> That's just the command line prompt - it reflects the directory you are in
[21:49] <Beam> DUDE YES
[21:49] <Beam> so now I should turn it off right cause it's taking pictures again
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[21:49] <daveake> I want you to look and see if that error message is gone
[21:49] <Beam> Ian_ okay that's good XD
[21:49] <daveake> and if any other messages are there
[21:50] <daveake> (error messages)
[21:50] <Beam> can I just unplug the batteries?
[21:50] <Beam> no errors anymore
[21:50] <daveake> better than that
[21:50] <daveake> press ALT+F2
[21:50] <daveake> then type
[21:50] <Beam> okay
[21:50] <daveake> sudo reboot
[21:51] <Beam> okay
[21:51] <Beam> now it says the system is going down for reboot now
[21:51] <Beam> and then it reboots
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[21:52] <Beam> now it's vack on
[21:52] <Beam> back*
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[21:52] <Beam> like it was before
[21:52] <Beam> taking pictures again
[21:52] <Beam> what do I do now?
[21:53] <Beam> it sats free SD space like 800 MB but I'm not 100% sure because it slipped away before I could type it
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[21:53] <Beam> it was either 800 or 300
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[21:54] <Beam> how do I turn it off now?
[21:54] <daveake> turn what off ?
[21:54] <Beam> the PITS
[21:54] <Beam> because i want it to stop filling the storage
[21:54] <Beam> or I can do this all over again
[21:54] <Beam> not too much work
[21:54] <daveake> ALT+F2, login, type sudo halt, wait afew seconds
[21:54] <Beam> but I have to go to bed now and I want to turn it off XD
[21:54] <Beam> okay thanks
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[21:56] <Beam> okay I want to say something
[21:56] <Beam> you guys are the best
[21:56] <Beam> really
[21:56] <Ian_> df -m will show you free disk.card space etc.
[21:56] <Ian_> df -m
[21:56] <chris_99> is there something similar to the habamp out of interest, for both tx/rx?
[21:56] <Beam> of all the projects I've done in my life (17 years isnt all too much experience but whatever) ive never encountered such a helpfull band of people
[21:56] <Beam> thanks
[21:57] <Beam> that too is helpful
[21:57] <daveake> np
[21:57] <Upu> SSB Electronics chris_99
[21:57] <Upu> but they are $$$
[21:57] <Beam> also, to do this with the developers of the PITS is really exciting
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[21:57] <Beam> I mean your names are on the PITS! thats really cool
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[21:57] <Beam> so
[21:57] Nick change: PrjHeT_ -> PrjHeT
[21:57] <Upu> lol
[21:57] <Upu> nps
[21:58] <Lunar_Lander> upu and dave rock!
[21:58] <daveake> yeah we're much cooler than sentintospacewithnohopeofreturn
[21:58] <Beam> I'm going to bed now, please know that I appreciated all of this immensely. thanks and good night
[21:58] <Beam> I'm beginning to think that too
[21:58] <Beam> XD
[21:58] <Upu> night
[21:58] <Beam> Bye!
[21:58] <Ian_> Buy from the manufacturers that give you the support, unstintingly. Good luck Gnight
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[22:00] <Upu> it seems the manufacturers give support anyway :)
[22:00] <daveake> lol
[22:00] <Ian_> Yes, but I don't suppose that SentIntoSpace make themselves too available
[22:01] <daveake> No, I've heard from a couple of their customers who couldn't get prompt help
[22:01] <Ian_> Good show! treat yourselves to a bacon and honey butty
[22:01] <Lunar_Lander> what was it with the bacon on balloons again?
[22:01] <chris_99> Upu, do you mean the preamps here, http://www.ssbusa.com/NEWLNASERIES.html i can't tell if they're rx only
[22:01] <Lunar_Lander> bacon butties or so?
[22:02] <daveake> It's an olde tradition from back when CUSF were in nappies
[22:02] <Upu> no
[22:02] <Ian_> Bacon sandwiches are a religious thing over in Ross-on-Wye
[22:02] <Upu> 1 sevc
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[22:03] <daveake> I and others are just maintaining the heritage
[22:03] <Upu> http://www.ssbusa.com/gaasfet.html
[22:03] <Lunar_Lander> ah
[22:03] <Lunar_Lander> thanks
[22:03] <Ian_> I'm just slowly getting an education
[22:03] <Upu> they are £400 I think
[22:03] <Lunar_Lander> btw http://gerblook.org/pcb/f6SLGTN9i2Zqm9hFdKCpML
[22:03] <chris_99> oh cheers Upu, eek heh
[22:04] <Upu> Sorry
[22:04] <Upu> £500
[22:04] <Upu> http://www.radioworld.co.uk/SP-7000_SSB_ELECTRONICS_70cm_Masthead_Pre-amp
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[22:05] <Upu> afk dog walk
[22:05] <chris_99> is there a particlar name for something that amplifies both rx/tx, other than just preamp
[22:05] <chris_99> toodles
[22:05] <Ian_> chris_99 a word of advice
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[22:06] <Ian_> If powering a masthead preamp up the coax, be aware that a folded dipole represents a short at DC
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[22:43] <dbrooke> Ian_: GSM does, https://en.wikipedia.org/wiki/GSM_frequency_bands
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[22:43] <Ian_> The relay has to be able to handle the frequency in use without creating impedance matching problems, which is where the costs are incurred.
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[22:44] <Ian_> At Low HF you might get away with an inexpensive automotive relay.(heresy)
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[22:45] <Ian_> Gotcha, 10MHz split so filtering with a diplexor or circulator
[22:46] <Ian_> e e e not circulator
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[22:53] <Laurenceb> hmm I think I've found the reason OpenRocket doesnt produce sane results for spinning stuff
[22:53] <Laurenceb> http://openrocket.sourceforge.net/techdoc.pdf
[22:53] <Laurenceb> page 77
[22:54] <Laurenceb> they dont seem to be describing proper solid body mechanics anywhere
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[23:31] <chris_99> i'm not sure if this got sent before, sorry if it did http://news.utexas.edu/2014/11/10/radio-wave-device-alu i'm just reading how you can get full-duplex with them, sound pretty amazing
[23:31] <chris_99> web.stanford.edu/~skatti/pubs/sigcomm13-fullduplex.pdf has a nice explanation
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[00:00] --- Mon Nov 30 2015