highaltitude.log.20190920

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[00:12] <SpacenearUS> New position from 03LU1ESY-13 after 0317 hours silence - 12https://tracker.habhub.org/#!qm=All&q=LU1ESY-13
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[01:40] <matt|home> uh.. do aerospace companies and organizations make their own rocket fuels or buy them elsewhere.. i can't find definitive answers to that question. like does nasa just have a massive lab for hydrazine somewhere?
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[01:57] <daveake> I googled for who makes rp-1, and found a couple of answers saying Shell and another company
[01:58] <daveake> Whether NASA do home-brew or not ... dunno
[02:05] <Darkside> why are you still awake daveake
[02:05] <daveake> Long story
[02:05] <Darkside> heh
[02:06] <daveake> Public forum so I'll say little but was assaulted this morning by an angry neanderthal
[02:06] <daveake> In googling likely sentences for common assault
[02:07] <daveake> I'm
[02:08] <Darkside> eek
[02:08] <daveake> Suspect he has previous which won't be good for him. All on CCTV and I have a witness.
[02:08] <Darkside> are you ok?
[02:08] <daveake> Yeah fine, thanks. No punches. Torn shirt.
[02:10] <Darkside> i am currently in doing online drone pilot training...
[02:15] <daveake> Cool. Had a drone for yesterday's flights. I'd there an exam at the end?
[02:15] <Darkside> yep
[02:15] <Darkside> going to be flying a DJI Matrice M600 Pro
[02:16] <daveake> I should get one
[02:16] <Darkside> thankfully work is paying for this
[02:17] <daveake> I've seen Steve's and they're impressive things
[02:17] <Darkside> we will be using the drone to perform antenna pattern measurements on some very large HF arrays
[02:17] <daveake> Perfect!
[02:17] <daveake> Ah nice
[02:17] <Darkside> i've actually just finished developing a separate telemetry link for our payload
[02:17] <Darkside> using..... 434 MHz LoRa :P
[02:17] <daveake> Make a HAB repeater
[02:17] <Darkside> 250 kHz BW, SF 7
[02:18] <daveake> mW ..
[02:18] <Darkside> ~4 Hz position/telemetry updates from the drone, plus uplink timeslots in between to command things
[02:18] <Darkside> good for maybe 4-5km
[02:18] <daveake> Great
[02:18] <daveake> I need to do more uplinks
[02:18] <Darkside> which is all it needs to do, given the main drone control link wont go further than that
[02:19] <daveake> Yeah
[02:19] <Darkside> its annoying tho
[02:19] <Darkside> the code i wrote to do all the comms and stuff is much nice than what im doing for HAB
[02:19] <Darkside> and it would be so easily adaptable to HAB
[02:19] <Darkside> but... i wrote it for work
[02:20] <Darkside> i may incorporate some of the 'ideas' from it into my own system
[02:21] <daveake> My work stuff remains my code so I don't have that issue. That said there's not a lot of cross-fertilisation but sometimes it happens, both ways.
[02:21] <Darkside> i've started using ZeroMQ for interprocess communication now too
[02:22] <daveake> e.g. I have a gateway manager thing coming which has framework from a paid job
[02:22] <daveake> And general TCP/IP client and server code gets shared
[02:23] <daveake> But otherwise not much
[02:23] <Darkside> mm
[02:23] <daveake> Zeromq is what?
[02:23] <Darkside> but yeah, it was kind of nice to re-implement this stuff
[02:23] <Darkside> queued messaging system
[02:23] <Darkside> allows for stuff like pub/sub
[02:24] <Darkside> i.e. the lora gateway thing ('dronelink server') has a publisher which emits all received packets
[02:24] <Darkside> and there's a request/reply socket which is used to insert packets to be transmitted into an apropriate queue
[02:26] <daveake> Mmqt type of thing?
[02:26] <Darkside> its kind of one level below that
[02:26] <Darkside> but similar idea
[02:26] <Darkside> what i need to do is pair it with some kind of autodiscovery system
[02:27] <daveake> Ok
[02:27] <Darkside> basically its way more robust than my current UDP broadcast system
[02:28] <daveake> I have my gateways UDP their presence and basic details e.g. frequency
[02:28] <daveake> Nice to collate those so I can see what's set to what, and what's running
[02:29] <Darkside> yes
[02:29] <Darkside> so thats essentially the discovery component
[02:29] <daveake> Cool
[02:29] <Darkside> i have experienced loss of UDP packets in my car network
[02:29] <Darkside> hence wanting to switch to something TCP-based for 'critical' data
[02:30] <daveake> I need it for my android app, because Android doesn't understand local hostnames :/
[02:30] <Darkside> yes
[02:30] <Darkside> but yeah, this is the idea
[02:30] <Darkside> the broadcast can include the IP address
[02:30] <daveake> So the UDP packet includes hostname and IP address
[02:30] <Darkside> snap
[02:30] <daveake> And the Android app does its own dns
[02:30] <daveake> Pita but works nicely
[02:31] <daveake> Cool, so I'll be interested in your messaging thing
[02:31] <daveake> UDP bring unreliable by design
[02:32] <daveake> Being
[02:32] <Darkside> i'll probably just stick with my current JSON-based protocol, but over a different transport
[02:32] <daveake> Yeah no need to change everything
[02:33] <daveake> Right, let's see if I remember how to do this sleep thing
[02:33] <Darkside> haha
[02:33] <Darkside> gnight
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[06:40] <SpacenearUS> New position from 03air_shepherd after 0316 hours silence - 12https://tracker.habhub.org/#!qm=All&q=air_shepherd
[06:46] <SpacenearUS> New position from 03W8MV-11 after 0317 hours silence - 12https://tracker.habhub.org/#!qm=All&q=W8MV-11
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[08:57] <SpacenearUS> New position from 03ICT3 after 0316 hours silence - 12https://tracker.habhub.org/#!qm=All&q=ICT3
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[09:05] <SpacenearUS> New vehicle on the map: 03OH9/M0LVR bl_chase - 12https://tracker.habhub.org/#!qm=All&q=OH9%2FM0LVR%20bl_chase
[09:43] <SpacenearUS> New vehicle on the map: 03BZ-1a - 12https://tracker.habhub.org/#!qm=All&q=BZ-1a
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[10:02] Nick change: BitEvil -> SpeedEvil
[10:30] <PE2BZ> I just released BZ-1a on a foil balloon, solar powered, would be nice if it floats, will go over UK tomorrow. 434.587 MHz LoRa mode 2 and 200 bd RTTY 600 shift 7n2
[10:35] <SA6BSS-Mike> PE2BZ: http://predict.habhub.org/#!/uuid=1e9cb215304fb6307873c61bf29abbd28679b448
[10:38] <PE2BZ> Thanks Mike :-)
[10:39] <SA6BSS-Mike> looks like I ,ight have to build that lora rx :)
[10:39] <michal_f> it goes to Poland too... too bad I have my antenna down :/
[10:39] <PE2BZ> I made a mistake with filling the foil balloon, you can not use the Ikea clip to close the balloon temporarily to check the neck lift....
[10:40] <PE2BZ> As a matter of fact, you can, but the balloon has some unwanted openings after releasing the clip.
[10:41] <SA6BSS-Mike> I dont have that roblem filling my foils using the ikea clip
[10:42] <PE2BZ> My BoBo had a hole after removing the clip. Lucky enough the clip was at te bottom of the neck so the good old turn it up, fold it and tyrap it did the trick. 26 gram necklift and after one hour still 26 gram.
[10:43] <SA6BSS-Mike> ahh, bob = tpu , not foil :)
[10:43] <SA6BSS-Mike> anyway, would be coolt to see if it would hold has for a couple of days or more
[10:43] <SA6BSS-Mike> predction looks good for stying in range of rx for the next coupel of days
[10:44] <SA6BSS-Mike> you woul dneed to fold the inlet a couple of times before you put the clip on
[10:45] <SA6BSS-Mike> I have glued a magnet on on the clip and just ad magnetic screws and nuts until I have the right weight
[10:56] <PE2BZ> Do you use the clips on latex also ?
[10:56] <SA6BSS-Mike> never used any
[10:56] <SA6BSS-Mike> 'latex balloons
[11:11] <SpacenearUS> New vehicle on the map: 03SITS-1 - 12https://tracker.habhub.org/#!qm=All&q=SITS-1
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[12:39] <SM0ULC-David> SA6BSS-Mike: you have your little lora-board, right? 433 mhz?
[12:53] <SpacenearUS> New vehicle on the map: 03OH9/M0LVR_derig_chase - 12https://tracker.habhub.org/#!qm=All&q=OH9%2FM0LVR_derig_chase
[13:17] <Lahti> fullhd https://tracker.sondehub.org/?sondehub=1#!mt=osm&mz=6&qm=All&mc=58.74316,23.34439&f=RS_P0440568&q=RS_P0440568
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[13:30] <PE2BZ> How does the Farnham SDR LoRa receiver work ?
[13:38] <daveake> craag ^^
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[14:35] <SA6BSS-Mike> SM0ULC-David: yes but I have a couple rfm96w and thought I should build one of those rx kits http://www.daveakerman.com/?p=1982
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[14:39] <SA6BSS-Mike> PE2BZ: https://ready.arl.noaa.gov/hypubout/143598_trj001.gif
[14:45] <PE2BZ> Tnx Mike, can I have one for 3 days also ?
[14:47] <PE2BZ> 26 degrees sun angle atm, and struggling a bit.
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[15:09] <SpacenearUS> New position from 03KA6TVU-11 after 0315 hours silence - 12https://tracker.habhub.org/#!qm=All&q=KA6TVU-11
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[16:40] <SpacenearUS> New vehicle on the map: 03AA1PJ - 12https://tracker.habhub.org/#!qm=All&q=AA1PJ
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[17:03] <SA6BSS-Mike> PE2BZ: 100h https://ready.arl.noaa.gov/hypubout/146128_trj001.gif
[17:05] <SA6BSS-Mike> 180h https://ready.arl.noaa.gov/hypubout/146253_trj001.gif
[17:05] <SA6BSS-Mike> last two is with new winddata
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[17:34] <PE2BZ> And thanks again :-)
[17:42] <SpacenearUS> New vehicle on the map: 03V4 - 12https://tracker.habhub.org/#!qm=All&q=V4
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[19:33] <SA6BSS-Mike> PE2BZ: you shouls mail oz1sky (brian) and la3eq to listen for your balloon tomorrow morning
[19:34] <SA6BSS-Mike> it looks like it will be out og my range untill the afteroon
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[20:11] <craag> PE2BZ: It's a standard rpi with LoRa hat, off an rf splitter with the SDR receivers.
[20:11] <craag> (Farnham LoRa RX)
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[22:12] <SpacenearUS> New vehicle on the map: 03KF7NFB-1 - 12https://tracker.habhub.org/#!qm=All&q=KF7NFB-1
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[23:36] <SpacenearUS> New position from 03KD0HIP-7 after 0312 days silence - 12https://tracker.habhub.org/#!qm=All&q=KD0HIP-7
[00:00] --- Sat Sep 21 2019