highaltitude.log.20170824

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[02:57] <SpacenearUS> New vehicle on the map: 03PUPUSA - 12https://tracker.habhub.org/#!qm=All&q=PUPUSA
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[03:49] <steve_> test
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[08:09] <SpacenearUS> New vehicle on the map: 03car_chase - 12https://tracker.habhub.org/#!qm=All&q=car_chase
[08:09] <SpacenearUS> New position from 03KF5KMP-8 after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=KF5KMP-8
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[09:12] <darsie> <edmoore> steam is not a very good propellant <-- Then why does H2/O2 have such a high Isp?
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[09:13] <darsie> It also has lower molecular weight than CO2, N2 and air and thus higher particle and exhaust velocity at the same temperature.
[09:13] <edmoore> darsie: not because of the steam
[09:14] <darsie> unless the polarity reduced the particle velocity.
[09:14] <edmoore> It's because of the enthalpy per unit mass of h2 and o2 is very high, thanks mainly to the h2
[09:14] <SpeedEvil> Also, H2/O2 is generally run with a considerable amount of extra H
[09:15] <edmoore> And h2/o2 engines burn fuel rich
[09:15] <edmoore> And lots of excess h2 in the exhaust helps performance
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[09:17] <edmoore> Because it has a lot of ability to accelerate to a high velocity for a given temp
[09:28] <edmoore> darsie: there's a very good informal introduction to and history of liquid chemical rocket propulsion called 'Ignition!' By John Clarke, pdf is floating around online
[09:29] <SpacenearUS> New vehicle on the map: 03123_chase - 12https://tracker.habhub.org/#!qm=All&q=123_chase
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[09:52] <KF5WYX> Good morning UK, and salutations to the other timezones.
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[09:56] <fsphil> morning!
[09:56] <KF5WYX> heya fsphil
[09:57] <KF5WYX> Exciting news - from my perspective anyway - finally I'm planning another flight :)
[09:58] <KF5WYX> The last one was April 2005, so I seem to be consistent in attempting this every 2 years or so.
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[10:02] <fsphil> I'm well behind on launches too
[10:06] <KF5WYX> I have fears of another failed recovery. Launching from somewhere albuquerque - going on my luck so far it'll land on native american reservation land, or the middle of some desert that our truck can't get to.
[10:06] <gonzo_> I read that as being 'behind on lunches'
[10:07] <KF5WYX> Still - Unlike the launch in Texas, we at least have family and friends in ABQ that can attempt to contact land owners long after we have to leave the state.
[10:07] <gonzo_> alternative is build a low cost payload that you don't chase
[10:08] <KF5WYX> My payloads tend to be quite low cost in any case - with some failed recoveries so far, I've stuck to telemetry and a used cannon camera. That said, if I could get good images back from the payload in flight, I'd care less about recovery.
[10:09] <gonzo_> my last few ( also a while ago) cost about £50. They don't need to go too far for it to cost more in fuel than it's value
[10:09] <KF5WYX> I know fsphil did some work with transmitting images - but bandwidth is a painful limit. I looked at sstv with similar fears too.
[10:11] <KF5WYX> I'd even risk putting a cell phone on the thing to broadcast the images when it hits the ground, but it's quite likely to be outside of range for the nearest cell tower (quite aside from the legalities of flying a cell phone)
[10:11] <gonzo_> ideally you need a nation wide rx network. but having easilly aprs available, that could be an uphill battle
[10:12] <gonzo_> unless you can get some clubs on your predicted path to do something
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[10:13] <gonzo_> cell phone isn't reliable even in the UK. Suspect it would be worse in us
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[10:13] <fsphil> there's been some work on sending ssdv faster, mostly by the ozzie department
[10:13] <fsphil> and lora from daveake
[10:14] <KF5WYX> Well, aprs could still work - or even simplex. The last flight landed on a ranch. I knew where it was, but couldn't get to it. It stopped transmitting because it was a botched launch, didn't lift, and flew into the side of a bew. - Assuming a successful launch and relatively soft landing - I could install both the HX1 for APRS, and an NTX2. Share t
[10:14] <KF5WYX> he wiring between the camera SD card and an arduino - then when it lands, have the arduino shut off power to the camera and start transmitting the contents of the SD card on 70cm. That way, if the closest I can get is the road, I may still recover something.
[10:14] <daveake> I did images via ftp/4G, from a tree, a couple of flights ago :)
[10:15] <KF5WYX> I also have a small solar cell which could help keep it running long enough.
[10:15] <KF5WYX> daveake: you put a mobile onboard?
[10:15] <KF5WYX> I guess the UK regs are less of an issue?
[10:15] <daveake> That was a Pi doing everything
[10:15] <KF5WYX> ahh
[10:16] <KF5WYX> still.
[10:16] <daveake> So Pi, Pi cam, 4G dongle etc
[10:16] <daveake> Wifi has been done too - I know of at least one flight where they got the images down from up a tree by connecting a laptop to the tracker over a wifi link
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[10:17] <KF5WYX> If I fly Pi - of course I need to write entirely new software, but I'd have a lot more options with the ability to ssh the thing over the air.
[10:18] <fsphil> mosh would be better than ssh over an unreliable link
[10:18] <fsphil> some of the eclipse flights sent video down over high power 900mhz radios earlier this week
[10:18] <daveake> I've not flown it yet, but I have software that provides a remote terminal over lora
[10:18] <fsphil> or was it 5.6ghz... hmm, my memory sucks today
[10:19] <KF5WYX> I worry that violates FCC Part 97
[10:20] <KF5WYX> but - a directional wifi antenna, activated only when on the ground - that could really work.
[10:20] <KF5WYX> I wonder what range I can get - I know that some of the quadcopter users get great range through wifi
[10:21] <fsphil> those are in the air. range will probably not be too good on the ground
[10:22] <KF5WYX> It's a fair point - but - it's pretty flat gound for the most part in NM
[10:22] <KF5WYX> Erm - I may be wrong about that.
[10:23] <KF5WYX> This hobby - I start out wanting to spend around $300 on a flight, and end up considering building my own petrol powered recovery quad copter.
[10:23] <KF5WYX> lol
[10:23] <fsphil> that's the sign of a good hobby :)
[10:24] <gonzo_> the issues in the UK, the bases have reasonably directional antennas, so signals above a few 1000's ft can be poor. Also the balloon will see many bases
[10:25] <gonzo_> and when payloads are on the floor, they are going to be compromisedtoo
[10:25] <craag> CAA allows mobile phone use on flights now
[10:25] <craag> but yes, often doesn't work well >~2km alt
[10:26] <KF5WYX> So - slightly off topic. My wife and I are new parents (4.5 months), and just decided to take a road trip from Texas to Idaho. It would be around 30 hours of drive time if we were alone, so perhaps 3-4 days. With the newborn we decided to take a week to do it (we have to stop for feeds etc), and just bought a used $3500 conversion van for camping i
[10:26] <KF5WYX> n... So towards the end of next month, we're doing this road trip via NM, to the grand canyon, on to Idaho, Over to Yellow Stone, and back.
[10:26] <gonzo_> so you are only going to get comms as it is ascending/dxecending
[10:26] <KF5WYX> Now I'm planning a flgiht while we're in NM. That's how it came about.
[10:26] <craag> nice :)
[10:26] <gonzo_> and on landing, it will be passing through the useable zone pretty quick
[10:26] <fsphil> a flight over yellowstone should be awsome
[10:27] <daveake> I've only flown GSM a few times, and on only one did it manage a position before landing
[10:27] <KF5WYX> I'd love to do a flight over yellow stone - but NM has more people around to help launch, fewer airspace regs (y'know, since the aliens landed), and frankly, if the thing landed somewhere in yellow stone national park, who's to know how recoverable that would be.
[10:27] <daveake> (or sea-ing, rather than land-ing)
[10:27] <fsphil> splashing
[10:28] <KF5WYX> GSM probably wouldn't work for me - there are large gaps in coverage here.
[10:28] <KF5WYX> I have to go Wifi with high gain.
[10:28] <fsphil> that's going to be a pain to aim in flight
[10:28] <daveake> GSM in USA SW is very poor
[10:29] <KF5WYX> In flight I'd be going APRS, wifi for recovery of images if I'm lucky enough for it to survive landing.
[10:29] <daveake> WiFi is going to be a challenge
[10:29] <fsphil> ssdv over aprs :)
[10:29] <fsphil> which has been done... but it's pretty dodgey
[10:29] <daveake> Best bet probably would be to turn off all the handshaking and do a tx-only link
[10:29] <daveake> There's some software around to do that
[10:29] <daveake> Can't remember what it's called
[10:29] <gonzo_> not being permitted to use ham kit airborne in the UK, forced us to use the licence exempt 434MHz band. And that turned out to be far supreior to aprs. But it does help to have a receiver network, rather than having to rely on just your own rx
[10:30] <KF5WYX> Well then I'm back to - sstv / 70cm slow data.
[10:30] <daveake> fsphil will remember :)
[10:30] <fsphil> not with my brain today, but I do have it bookmarked....
[10:30] <daveake> :)
[10:30] <daveake> lora is reasonably quick, and works well even high-bandwidth so long as you're within ~ 50 miles
[10:31] <KF5WYX> hmm, someone was telling me about lora recently - I may have a contact with radios.
[10:31] <daveake> Dunno what bandwidth/power/duty cycle rules you have but that on 434 or 915 might be an option
[10:31] <fsphil> https://github.com/bortek/EZ-WifiBroadcast/wiki I think
[10:31] <daveake> then you can get an XGA image every 1-2 mins
[10:33] <KF5WYX> so 4-6 minutes for a 1080p
[10:33] <SpacenearUS> New position from 03WB8MSJ-2 after 0313 hours silence - 12https://tracker.habhub.org/#!qm=All&q=WB8MSJ-2
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[10:34] <daveake> sorry meant WXGA
[10:34] <daveake> Actually I should check what resolution I did use
[10:34] <fsphil> 'p' doesn't make sense for still images
[10:35] <daveake> I know there were complaints some people had to zoom out to see them :)
[10:35] <fsphil> oh yes, I was to look at auto scaling them when they're too large
[10:35] <fsphil> shouldn't be too hard with javascript </famous last words>
[10:36] <daveake> Also, an embeddable "last image for payload X" page would be good :)
[10:36] <fsphil> just a page that redirects to the lastest jpeg?
[10:36] <daveake> yes
[10:36] <fsphil> hmm
[10:36] Action: fsphil disappears
[10:36] <daveake> For people putting together a mission-control stylee page
[10:36] <daveake> heh
[10:37] <SpacenearUS> New position from 03WB4ELK-2 after 0313 hours silence - 12https://tracker.habhub.org/#!qm=All&q=WB4ELK-2
[10:37] <KF5WYX> http://chapmanworld.com/2015/05/02/volatus-1-flight-1-botched/payloadlocation2/ <- this was my previous outcome. Last known position, and I found my way to route 118, vertically parallel to the thing, but couldn't get to it.
[10:39] <KF5WYX> I was probably 500-600 meters from the thing as the crow. If the same happened, and I was lucky enough to have a Pi and directional wifi - I'd recover the images.
[10:40] <KF5WYX> Or even a slower tx protocol - I'd have had the opportunity to get something back.
[10:40] <KF5WYX> I have to consider these options.
[10:48] <SpacenearUS> New position from 03WB8ELK-4 after 0314 hours silence - 12https://tracker.habhub.org/#!qm=All&q=WB8ELK-4
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[11:15] <SpacenearUS> New position from 03SH06 after 036 days silence - 12https://tracker.habhub.org/#!qm=All&q=SH06
[11:15] <SpacenearUS> New vehicle on the map: 03OK7DMT-11 - 12https://tracker.habhub.org/#!qm=All&q=OK7DMT-11
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[11:18] <SpacenearUS> New position from 03YPADSONDE after 0310 hours silence - 12https://tracker.habhub.org/#!qm=All&q=YPADSONDE
[11:20] <SpacenearUS> New vehicle on the map: 03TT7F1 - 12https://tracker.habhub.org/#!qm=All&q=TT7F1
[11:30] <fsphil> daveake: https://ssdv.habhub.org/PI868/latest.jpeg
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[11:32] <Laurenceb> !whereis HIRFW-6
[11:32] <SpacenearUS> 03Laurenceb: 03HIRFW-6 was over 03North Pacific Ocean 10(7.52274,-117.20452) at 0314221 meters about 0310 hours ago
[11:35] <KF5WYX> If I did my math right, LoRa could potentially tx high definition 1080 images at around one every 21.6 minutes at max throughput (not that HD is the goal, just trying to get a handle on the tech).
[11:42] <bertrik> I remember a max lora bitrate of about 5 kbps
[11:42] <SpacenearUS> New position from 03RSIST after 0310 hours silence - 12https://tracker.habhub.org/#!qm=All&q=RSIST
[11:43] <KF5WYX> Then I'm off, by a lot.
[11:43] <KF5WYX> heh
[11:44] <bertrik> I see now it's actually about 5.5 kbps for SF7BW125 coding rate 4/5
[11:45] <bertrik> with lower SF and higher BW you get higher bitrate, SF6 BW500 is 37500 bps
[11:45] <KF5WYX> I had a theoretical limit of 50kbps from having watched a video on the tech - that number is likely out because it's talking about theoretical stuff.
[11:46] <fsphil> never believe marketing
[11:47] <gonzo_> but non rf engineers do. If the spec says range upto 100mtrs, they will assume it will do that under all circumstances
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[11:50] <KF5WYX> Okay, so in reality, wifi is going to give much better performance at the cost of power and range. I have numbers suggesting rPI3 running with wifi on but HDMI off, consumes around 250ma, and so, using a couple of 2600mah lithium cells (like those I use in my e-cig) I should get something in the order of 10-15 hours of play. (they're 3.7v cells, t
[11:50] <KF5WYX> wo in series to supply >5v required by the PI)
[11:50] <KF5WYX> Then talking to the thing becomes a matter of line-of-sight and high gain.
[11:51] <KF5WYX> I could possibly use a duino directed antenna, based on signal strength reads too. Would help position it more precisely.
[11:51] <Darkside> lol 21 minutes to send a 1080p image
[11:51] <Darkside> i can do that in about 10 seconds with wenet
[11:52] <Darkside> https://github.com/projecthorus/wenet
[11:52] <Darkside> 115kbps FSK + LDPC FEC
[11:53] <KF5WYX> Darkside :-) You're tx'ing during flight?
[11:53] <Darkside> yes
[11:53] <fsphil> it's the only way to be sure
[11:53] <Darkside> takes around 10-30 seconds depending on the image
[11:53] <Darkside> for a 1080p imge
[11:53] <KF5WYX> Okay - I need this! :-D
[11:54] <fsphil> at that sort of speed, I'd probably go bigger
[11:54] <fsphil> ssdv will work up to 4080x4080 :)
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[11:54] <Darkside> problem is you end up with terrible distortion on the picam
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[11:55] <KF5WYX> Do you have any guidance on the radio hardware?
[11:55] <fsphil> yeah not worth it with those optics
[11:55] <KF5WYX> It's a fishy-eye cam right?
[11:55] <Darkside> TX site is a LoRa module, with a line running from DIO3 to the RPi's TXD pin
[11:55] <Darkside> TX side*
[11:55] <fsphil> the Pi isn't a fish-eye, but it has a teeny tiny lens
[11:55] <Darkside> RX side is all running under linux, using a RTLSDR +Preamp
[11:56] <Darkside> RX side definitely needs a bit of grunt though, recommend i3
[11:56] <KF5WYX> http://www.newark.com/raspberry-pi/rpi-8mp-camera-board/camera-board-8-mp-raspberry-pi/dp/77Y6521 <- this thing? So it needs a nice lense on it.
[11:57] <Darkside> ah wait, TXD goes to DIO2
[11:57] <KF5WYX> I think my laptop is an i5
[11:58] <fsphil> mine's an i5, and it ran wenet just fine
[11:58] <Darkside> anyway, i used an uputronics lora shield with a mod
[11:58] <Darkside> just ran a bit of rework wire from the TXD line to DIO2
[12:00] <KF5WYX> lol@ Pi in the Sky kit.
[12:02] <KF5WYX> That's a shame - the Pi in the sky kit isn't available with a US Lora frequency.
[12:03] <KF5WYX> guess I'm building that myself :)
[12:04] <K6sts> Quit
[12:04] <fsphil> I'm sure if you asked nicely
[12:04] <fsphil> it's just the module that's different
[12:05] <Darkside> well
[12:05] <Darkside> youc an run on 434 mhz
[12:06] <Darkside> hmm
[12:06] <Darkside> yeah might be ok
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[12:28] <SpacenearUS> New position from 03SP5RZP-11 after 034 days silence - 12https://tracker.habhub.org/#!qm=All&q=SP5RZP-11
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[12:36] <jbayfield_> Just because I know there's some other young HABbers who got/are getting their GCSE results today, well done/good luck. :)
[12:39] <KF5WYX> So looking at what you're doing Darkside. I'm not confident that I can find bandwidth within the regs here, and even if I were, I'm not confident I could replicate the hardware either. Images back in seconds would be amazing, but, DaveAke has blogged getting back some good image results in a matter of minutes - which is sufficient, and I believe I
[12:39] <KF5WYX> can replicate his setup with predominantly off the shelf components available here.
[12:40] <KF5WYX> So - I'm still thinking LoRa is my best option (I have about a month to get it together, and much of this is new tech to me)
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[13:02] <Laurenceb> was stabilotron found?
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[13:09] <fsphil> no news from what I've seen
[13:11] <SpacenearUS> New position from 03ttntest1 after 0314 hours silence - 12https://tracker.habhub.org/#!qm=All&q=ttntest1
[13:12] <KF5WYX> d frankly it would cost a little more to ship from upu. Any help you can offer on the software side would be useful - ultimately I'll write my own firmware, but that'll require more time (something I don't have a lot of right now).
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[13:26] <SpacenearUS> New position from 03SP9UOB after 034 days silence - 12https://tracker.habhub.org/#!qm=All&q=SP9UOB
[13:27] <Geoff-G8DHE> Looks like Babs is still hunting for Stabiltron_II he's just asked for some images to help locate the payload, which may have seperated from the parachute on landing or grazing a nearby hill .... http://360.g8dhe.net/HAB_Flights/2017_Flights/STABILOTRON-II_20170821/
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[13:54] <Upu> hey KF5WYX what bits are you after ?
[13:55] <KF5WYX> I was looking at your Pi in the Sky kit, and it doesn't have an option to buy in the 915 Lora frequencies.
[13:55] <Upu> no but you can buy the kit and buy the 915 Board seperately
[13:56] <KF5WYX> Ah - my bad :)
[13:56] <Upu> https://store.uputronics.com/index.php?route=product/product&path=61&product_id=68
[13:56] <Upu> We do the Zero in 915
[13:56] <Upu> back in 30
[14:04] <bertrik> next saturday, a balloon carrying a LoRaWAN tracker will be launched in the netherlands
[14:04] <bertrik> I'd like to run my bridge software to make it appear on the tracker.habhub.org / spacenear.us
[14:07] <bertrik> So, I'm more or less looking for someone to give me approval to run this on the ukhas/habhub network
[14:07] <bertrik> I've been doing some tests already using the 'ttntest1' balloon, driving it around on my bicycle, etc.
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[14:18] <SpacenearUS> New vehicle on the map: 03truck_chase - 12https://tracker.habhub.org/#!qm=All&q=truck_chase
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[14:39] <SpacenearUS> New position from 03HIRFW-6 after 0313 hours silence - 12https://tracker.habhub.org/#!qm=All&q=HIRFW-6
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[15:03] <Laurenceb> !whereis HIRFW-6
[15:03] <SpacenearUS> 03Laurenceb: 03HIRFW-6 is over 03North Pacific Ocean 10(7.27274,-118.70452) at 0314221 meters
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[16:04] <fsphil> how long has it been up there now?
[16:05] <michal_f> !howlong HIRFW-6
[16:05] <michal_f> would be usefull now ...
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[16:10] <SpacenearUS> 03PE2BZ: Here you go: 12https://ukhas.org.uk/spacenearus_irc_bot
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[17:07] <SpacenearUS> New vehicle on the map: 03BARC2 - 12https://tracker.habhub.org/#!qm=All&q=BARC2
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[17:26] <Mike-SA6BSS> michal_f: hirfw-6 up since 20sep 16
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[18:11] <TT7> Hi everyone
[18:12] <TT7> I finally intend to launch my first superpressure balloon tomorrow morning
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[18:14] <TT7> the tracker transmits geofenced APRS and 100 baud RTTY on 434.264MHz. so any interested listeners in central and eastern Europe are welcome
[18:15] <TT7> it will be the first proper test for the balloons I made
[18:15] <TT7> details can be found on my blog https://tt7hab.blogspot.cz/2017/08/the-tt7f1-flight.html
[18:16] <adamgreig> cool, good luck!
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[18:48] <fsphil> https://www.youtube.com/watch?v=J4u3ZN2g_MI
[18:49] <fsphil> new spacex tech, invisible rockets
[18:50] <Hopper_> Hey there high altitude! Why do people use such long tow lines on their payloads, and what is considered to be the optimum length for your tow line?
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[18:54] <PE2BZ> I prefer 30 - 40 meter, when the chute enters a tree the payload could still be on the ground :-)
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[19:03] <fsphil> a longer cord also helps reduce the speed of the swinging
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[19:19] <daveake> fsphil: Thanks for the jpg link url :)
[19:19] <daveake> Now have it self-refresh :p
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[19:49] <Hopper_> fsphil: Thanks, that makes sense. What is the shortest cord you would use?
[19:51] <Hopper_> PE2BZ: I s'pose that is one way to look at it. That's a LONG line.
[19:51] <SpacenearUS> New position from 03SP9UOB-P30 after 0322 days silence - 12https://tracker.habhub.org/#!qm=All&q=SP9UOB-P30
[19:53] <craag> balloon - 5m - chute - 10m - payload is about as short as I'd go without a good reason.
[19:53] <craag> but twice that was noticably better I think
[20:00] <Ian_> Almost zero with a Pico that has to maintain a max system diameter (in any direction) of under 2m at all times during the flight
[20:00] <Ian_> That's a special case though.
[20:01] <craag> and they swing like hell then :)
[20:01] <craag> latex ones
[20:25] <daveake> Saw a video of a USA launch with payload tied to the neck
[20:25] <daveake> After launch it immediately did a 360
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[20:26] <craag> I remember matt's in-the-neck pico tracker doing that :)
[20:26] <craag> copying the rtty on that was a challenge
[20:26] <Ian_> Misread that for a second .. . tied to his neck . . . reality was less funny. Fast fading I guess
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[20:30] <craag> yeah although I think the freq drift was a little extreme on that one too
[20:31] <craag> ~1Khz/sentence at 50bd
[20:31] <craag> although no it was 300bd lol
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[20:34] <daveake> 300 at least helps dl-fldigi follow the signal as it flies across the waterfall
[20:35] <craag> yeah except when it faded at all then the afc would heistate and never catch up :P
[20:35] <daveake> ah :/
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[20:52] <Hopper_> daveake: Happen to remember anything about the video so I can find it?
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[20:52] <fsphil> daveake: just add javascript :)
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[21:09] <daveake> I know I know :)
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[21:14] Nick change: day_ -> daey
[21:15] <fsphil> I've no excuse to not add the new front page now, just showing the last few images per active payload
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[21:18] <daveake> Yeah it does get a bit busy these days
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[21:56] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12https://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
[21:56] <SpacenearUS> New vehicle on the map: 03KM4GCU_chase - 12https://tracker.habhub.org/#!qm=All&q=KM4GCU_chase
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[22:09] <SpacenearUS> New position from 03SH06 after 038 hours silence - 12https://tracker.habhub.org/#!qm=All&q=SH06
[22:12] <Geoff-G8DHE-Tab> Yea Babs has located Stablitron, payload appears to have parted from parachute at several hundred metres up.
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[22:22] <Ian_> That is exceedingly good news, after all the work that he has put into it this last couple of years.
[22:22] <Ian_> .confetti
[22:22] <SpacenearUS> 2´*.D¨¯`* 2D*¨¯`* 2
[22:22] <SpacenearUS> 2´ *. Congratulations 2 ¯`*
[22:22] <SpacenearUS> ¨¯`*D2´* 2.D *¨¯`*2
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[22:36] <daveake> Coincidentally, confetti is possibly what the payload resembles
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[22:37] <daveake> Hopefully the SD card is intact and working
[22:37] <Geoff-G8DHE-Tab> He emailed some images I'll stick them up in a bit
[22:41] <adamgreig> the sd card survived ok?
[22:43] <Geoff-G8DHE-Tab> He hasn't got the bits himself yet, another group in the area located it and are making it to him there pictures are here http://360.g8dhe.net/HAB_Flights/2017_Flights/STABILOTRON-II_20170821/
[22:44] <adamgreig> wow lucky find
[22:45] <Geoff-G8DHE-Tab> He sent them a map with likely location after seeing the flight path images I gather the payload was just inside his marked area!
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[22:46] <daveake> Ah so nothing from the payload itself yet ?
[22:46] <Geoff-G8DHE-Tab> No not yet
[22:48] <Geoff-G8DHE-Tab> The odd thing is that the separation looks to have happened about 1500m off the surface. It hasn't hit anything that we can see, but it might be that the balloon had been rubbing on the line on the way down and gave up the ghost just above the surface. 
[22:49] <Geoff-G8DHE-Tab> I don't think the capsule will be usable again, 1kg of batteries located in the middle of it and travelling at around 100mph straight through the package saw to that (see photos).......but hopefully the SD card will be intact and readable.....
[22:50] <daveake> Once Babs has recovered from this, someone sign him up for a talk at UKHAS 2018 :)
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[22:53] <adamgreig> won't be the first show and tell for hardware that had a high impact velocity
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[22:53] <daveake> lol
[22:53] <adamgreig> seems a long time ago now we were handing around that crushed biology experiment
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[23:21] <SpacenearUS> New position from 03YPADSONDE after 0310 hours silence - 12https://tracker.habhub.org/#!qm=All&q=YPADSONDE
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[00:00] --- Fri Aug 25 2017