[00:27] <SpeedEvil> It's really not
[00:27] <SpeedEvil> oh
[00:28] <SpeedEvil> nvm
[00:28] <SpeedEvil> I misread
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[05:52] <patrick__> hello -
[05:53] Nick change: patrick__ -> VE6AZX
[05:53] <VE6AZX> there. that's better.
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[06:04] <VE6AZX> hello fl_0
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[06:10] <fl_0> VE6AZX: good morning
[06:11] <VE6AZX> Ah - of course, it's early morning in the UK, and that's mostly where this group is, right?
[06:12] <VE6AZX> I found this place while searching for some amateur high altitude balloon ideas. Was looking forward to talking with people with similar interests.
[06:14] <Vaizki> mostly UK yes. and good afternoon from China...
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[06:35] <fl_0> VE6AZX: jepp. central Europe where I live
[06:35] <fl_0> :)
[06:35] <VE6AZX> cool - I'm in Canada
[06:35] <VE6AZX> alberta
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[07:28] <fsphil> prog: ah, my mistake :)
[07:29] <SpacenearUS> New vehicle on the map: 03ISCAPI - 12http://tracker.habhub.org/#!qm=All&q=ISCAPI
[07:47] Nick change: _Matthias -> Matthias
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[08:13] <AndyEsser> bad fsphil
[08:17] <mfa298> there is some good ham software and some crazy hams writing software, as well as lots of bad ham software.
[08:17] <mfa298> sdr-radio (and formerly ham radio deluxe) would fall into the good category (both originally by the same person)
[08:18] <mfa298> ui-view might fall into the good and crazy categories :p
[08:18] <AndyEsser> what's ui-view?
[08:18] <Upu> AndyEsser:
[08:18] <Upu> remember you cannot unsee something
[08:19] <Upu> thats my only warning
[08:19] <AndyEsser> is it's the APRS client for windows
[08:19] <AndyEsser> ?
[08:19] <AndyEsser> www.ui-view.net?
[08:19] <mfa298> an aprs program, works well but has't changed in a logn time as the dev died and requested the source was deleted
[08:19] <Upu> oh wrong one
[08:19] <AndyEsser> he requested the source deleted when he died?
[08:19] <AndyEsser> Upu: what are you thinking of?
[08:19] <AndyEsser> I'm intrigued now
[08:20] <Upu> whats that ham radio program with the worst UI ever
[08:20] <Upu> http://www.genesisradio.com.au/yt1dl/pics/MULTIPSK_SETUP.png
[08:20] <Upu> BOOM
[08:20] <AndyEsser> mfa298: UI-View 16 bit...
[08:20] <AndyEsser> wow
[08:20] <AndyEsser> o good fucking lord
[08:20] <edmoore> i thought that elevator control software you posted here once was pretty bad
[08:21] <edmoore> especially as it looked non-free
[08:21] <AndyEsser> I... I just want to redesign it!
[08:21] <fsphil> oh no you've seen it
[08:21] <fsphil> been years since I saw it. it's still there when I close my eyes
[08:21] <AndyEsser> haha
[08:22] <daveake> It was still there after my eye op
[08:22] <daveake> so even being blind doesn't help
[08:23] Action: mfa298 thinks some hams like software like their expensive hf transceivers. The more knobs and twiddly bits the better even if you never use them and don't know what they do
[08:23] <AndyEsser> ha
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[08:25] <daveake> It's a sign of failure when the dialog has a label saying "help on right click"
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[08:33] <SpacenearUS> New vehicle on the map: 03QM-SkyPi-1 - 12http://tracker.habhub.org/#!qm=All&q=QM-SkyPi-1
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[08:46] <michal_f_off> I'm checking predictions for saturday flight and landing point is fluctuating around a city with an aeroclub... should I let them know if this predict keeps until saturday ?
[08:46] <michal_f_off> they have small airport with gliders mostly
[08:46] <AndyEsser> michal_f_off: they'll be aware of NOTAMs
[08:46] <AndyEsser> or at least... you'd hope
[08:47] <daveake> notam is for launch site not landing site
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[08:47] <daveake> so they won't know
[08:48] <daveake> Can't you get it to land away from the (small) airport ?
[08:48] <AndyEsser> good lord...
[08:48] <michal_f_off> I could kindly ask it ;]
[08:48] <AndyEsser> how did I mess that one up
[08:48] <AndyEsser> I'm going to go and sit quietly in the corner with my coffee
[08:48] <michal_f_off> no coffee for you this time, AndyEsser ! ;]
[08:49] <michal_f_off> I think I'll send them an email with link to tracker...
[08:49] <Vaizki> Subject: Fore!
[08:49] <michal_f_off> actually todays prediction is better, bo 3 days back it was constant
[08:50] Nick change: michal_f_off -> michal_f
[08:52] <daveake> michal_f: If your landing area is near a city and/or airport, change the launch parameters to avoid them, or don't launch
[08:53] <michal_f> ok
[08:54] <michal_f> how accurate is the predictor anyway? given that ascent rate and burst altitude are given correctly ?
[08:56] <daveake> A few miles, but depends on distance that the balloon is likely to travel. You need to keep at least 10 miles between landing point and those hazards
[08:56] <michal_f> nice rule of thunb, thanks
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[08:56] <daveake> that's all it is
[08:56] <daveake> You have to look at the flight profile and consider how it might vary from reality
[08:57] Nick change: xfce -> Guest47620
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[09:04] <michal_f> https://s31.postimg.org/kdo3qy5ff/11340642c4c9e4aa26005_10.gif
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[09:04] <SpacenearUS> New vehicle on the map: 03QM-Bus_chase - 12http://tracker.habhub.org/#!qm=All&q=QM-Bus_chase
[09:04] <SpacenearUS> New vehicle on the map: 03QM-JDW-Car_chase - 12http://tracker.habhub.org/#!qm=All&q=QM-JDW-Car_chase
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[09:05] <AndyEsse1> x-f: *shudder*
[09:06] <fsphil> it has an Abandon button
[09:06] <fsphil> it needs to be clicked
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[09:07] <AndyEsse1> Where is NickServ....
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[09:40] <AndyEsser> Anyone done any real world usage of an RPi with an RTL SDR for tracking/decode?
[09:50] <PE2BZ> Especially HAB you mean ? Or does ADSB also count ?
[09:51] <AndyEsser> I don't know what ADSB is
[09:51] <PE2BZ> The airplanes, telling where they fly ?
[09:51] <daveake> Tracking system for aircraft
[09:51] <AndyEsser> Ah
[09:51] <AndyEsser> Specifically hab
[09:51] <fsphil> plane spotting
[09:52] <AndyEsser> they need to build in POE to the Pi
[09:52] <fsphil> but without hassle of spotting
[09:52] <daveake> For a bit of fun, it's easy to put together an ADS-B receiver with Pi + SDR, and upload to flightaware etc
[09:52] <fsphil> yea POE would've been nice
[09:52] <AndyEsser> fsphil: then I can just run a single Cat5 out to the antenna assembly/pi etc and voila
[09:53] <AndyEsser> but... no...
[09:53] <AndyEsser> :(
[09:53] <fsphil> well you could but needs adaptors
[09:53] <AndyEsser> Well I guess I can do that anyway, and just butcher each end to run power myself
[09:53] <PE2BZ> https://www.pi-supply.com/product/pi-poe-switch-hat-power-over-ethernet-for-raspberry-pi/
[09:53] <AndyEsser> PE2BZ: it's like 1.5x the price of the pi itself...
[09:54] <PE2BZ> I know :-(
[09:54] <AndyEsser> Better to downgrade the connection 100 Mbit and just run power over one of the pairs if the distance isn't too bad
[09:54] <PE2BZ> But for 100Mbit you need 2 pairs Ethernet cable. So that leaves you with 2 pairs for power
[09:54] <AndyEsser> ^
[09:54] <PE2BZ> ;-)
[09:55] <fsphil> the pins of the ethernet port are accessable
[09:55] <fsphil> could add some jumper wires
[09:55] <fsphil> from the power input to the ethernet socket
[09:56] <daveake> hmm that sounds easy enough
[09:56] <fsphil> it probably won't be 5v at the end of the cable
[09:56] <daveake> Well, put a buck converter in there
[09:56] <daveake> What's POE voltage? 24V or something?
[09:56] <PE2BZ> Up to 48 Volt
[09:56] <fsphil> 48v
[09:56] <PE2BZ> smart sensing
[09:56] <daveake> ok that rules out most switchers!
[09:57] <fsphil> lower loss I guess
[09:57] <daveake> yes
[09:57] <fsphil> doesn't have to be standard poe
[09:57] <daveake> no
[09:57] <fsphil> though that would be nice too
[09:57] <fsphil> could get one of those poe switches where you can remotely toggle power
[09:57] <AndyEsser> Yea, if I was doing it myself, I wouldn't do normal POE
[09:58] <AndyEsser> just send +12v or something down the pairs (well... start at +5v and see what the voltage drop is at the end)
[09:58] <PE2BZ> AndyEsser do you allready have a POE switch ?
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[09:58] <AndyEsser> PE2BZ: no
[09:58] <AndyEsser> at work yes, but not at home
[09:59] <fsphil> all our wifi stuff at work is "proper" poe. pretty neat stuff
[09:59] <PE2BZ> At bol.com they sell a 5V from POE splitter for 18,-
[09:59] <PE2BZ> https://www.bol.com/nl/p/5v-poe-splitter-adapter-802-3af/9200000055254938/?Referrer=ADVNLGOO002018-G-10422777715-S-140234054408-9200000055254938
[09:59] <AndyEsser> fsphil: our Wifi stuff at work is custom POE
[09:59] <AndyEsser> *sigh*
[10:00] <fsphil> ubiquiti?
[10:00] <Vaizki> although to be fair I'm not sure how picky the Pi is on the +5V voltage so you might have issues with a long run of cat6 causing a voltage dip.. of course you could just run +12V or something and regulate at the Pi end..
[10:00] <AndyEsser> Ha yes
[10:00] <Vaizki> the standard poe is expensive as hell
[10:00] <AndyEsser> Vaizki: I did say I'd test it to see what the voltage drop is and alter accordingly :P
[10:01] <daveake> Yeah I wouldn't do 5V and run the Pi directly off that
[10:01] <daveake> Asking for trouble
[10:01] <Vaizki> well personally I run +30V down my fake PoEs..
[10:02] <daveake> http://www.ebay.co.uk/itm/Active-PoE-Splitter-Power-Over-Ethernet-48V-to-5V-2-4A-Micro-USB-4-Raspberry-Pi-/112019236819?hash=item1a14dde7d3:g:bwkAAOSwQupXVV37
[10:03] <Vaizki> mmm nice
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[10:03] <daveake> job jobbed. Even has the right plug for the Pi
[10:03] <fsphil> ah cute
[10:03] <daveake> Not as neat as the HAT but 1/4 the price
[10:04] <Vaizki> and this on the other end? http://www.ebay.co.uk/itm/DC-48V-0-5A-PoE-Injector-Power-Supply-Over-Ethernet-Adapter-UK-Plug-/131660778035?hash=item1ea7980a33:g:YHkAAOSw8-tWVVpn
[10:04] <AndyEsser> so once power has been sorted
[10:04] <AndyEsser> does the Pi have enough processing power to run the appropriate SDR software and dl-fldigi (or variant of)
[10:04] <AndyEsser> ?
[10:05] <daveake> That's what JR-RPI was working on yesterday
[10:05] <fsphil> unlikely you'll run any kind of graphical sdr program
[10:06] <mfa298> I've used £10 TP link poe splitters on pi's happily
[10:06] <Vaizki> well you could just run rtl_sdr and a bunch of pipes to csdr etc
[10:06] <AndyEsser> fsphil: yea, wouldn't want it graphical
[10:06] <mfa298> might struggle with a pi3 though.
[10:07] <AndyEsser> hmm, maybe one to experiment with
[10:07] <fsphil> rtl_fm's ssb demodulator is broken
[10:07] <mfa298> reading back a bit, I'm not sure the pcb pins from the rj45 match up with wires, at least on the early pi's they had the magnetics inside the jack so you get the output from the transformers not direct connection to the pins
[10:08] <fsphil> something similar with the osmocom library would be nice. would work with more hardware
[10:08] <AndyEsser> fsphil: might give me an excuse to go back to writing my own :)
[10:08] <fsphil> an SSB demodulator would be a great project
[10:09] <Vaizki> why not fix rtl_fm...
[10:09] <AndyEsser> Vaizki: because where's the fun :P
[10:09] <fsphil> it only works with rtlsdr dongles
[10:10] <AndyEsser> fsphil: that's all I have atm
[10:10] <Vaizki> well libcsdr has SSB demod.. :)
[10:10] <AndyEsser> too cheap to fork out on Airspy
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[10:25] <SpacenearUS> New position from 03NAILBRUSH after 032 days silence - 12http://tracker.habhub.org/#!qm=All&q=NAILBRUSH
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[11:21] <Laurenceb_> https://www.youtube.com/watch?v=brdmnUBAS00
[11:22] <AndyEsser> 5.1 million views...
[11:23] <mattbrejza> thats because its an old video, i know this because Laurenceb_ posted it
[11:24] <AndyEsser> "It's called electrical tape because it conducts electricity"
[11:25] <Laurenceb_> https://www.youtube.com/watch?v=dyii4nndOMM
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[11:26] <mattbrejza> reminds me of https://www.youtube.com/watch?v=t4CRCJUmWsM though
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[12:50] <SpacenearUS> New position from 03SP5RZP-11 after 03a day silence - 12http://tracker.habhub.org/#!qm=All&q=SP5RZP-11
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[12:57] <evilroots> so
[12:57] <evilroots> this is a thing
[12:57] <evilroots> wow
[12:57] <SpeedEvil> yes
[12:57] <SpeedEvil> very wow.
[12:58] <fsphil> much evil
[12:59] <evilroots> znc atach #highaltitude
[13:00] <evilroots> znc addnetwork #highaltitude
[13:01] <evilroots> got it arrrggg
[13:01] <evilroots> So
[13:02] <evilroots> Has anyone ever used a balloon to hold up an HF antenna ?
[13:02] <evilroots> I have no trees and the house has many powerlines near it
[13:02] <evilroots> So no tower or mast
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[13:03] <evilroots> But lots of open land around
[13:03] <SpeedEvil> It doesn't work well.
[13:03] <evilroots> ( not my land tho / public )
[13:03] <evilroots> Whats the main problem?
[13:03] <SpeedEvil> say 10mph wind at altitude - and you have a balloon which 'could' rise at 10mph - it's going to be canted over at 45 degrees
[13:04] <edmoore> yes tethered balloons are not very stable in wind
[13:04] <evilroots> true but better then nothing right? i was thinking 2 ballons with guy wires
[13:04] <edmoore> they shed vortices and bounce around all over the place
[13:04] <evilroots> wut?
[13:04] <SpeedEvil> Guy wires sort-of-help
[13:04] <edmoore> the air detaches from the ballon skin in an unstable way
[13:04] <edmoore> no they don't help
[13:05] <SpeedEvil> they mean that instead of being not vertical, the balloon just falls to the ground in modest wind
[13:05] <SpeedEvil> where modest wind is wind that is present basically all the time at altitude
[13:05] <evilroots> ah well at most the wind would be 10 mph
[13:05] <evilroots> if i were to do this
[13:05] <edmoore> if it's still i'd use a balloon, if it's windy i'd use a kite, if you don't mind spending money on the eright solution then a helikite
[13:05] <SpeedEvil> evilroots: 10mph at the ground is much higher at altitude usually.
[13:05] <SpeedEvil> What altitude do you want to get to?
[13:06] <evilroots> 100 to 250 feet
[13:06] <SIbot> In real units: 250 ft = 76 m
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[13:06] <evilroots> so kites
[13:06] <evilroots> Mhhh what kind?
[13:06] <evilroots> a wing?
[13:07] <evilroots> i have one of those
[13:07] <SpeedEvil> In principle, for short periods (an hour say) a properly configured quad may work
[13:07] <SpeedEvil> For somewhat longer periods, a teeeeny airship
[13:08] <evilroots> Idk those types
[13:08] <SpeedEvil> check the regulatory position also on things poking up from the ground.
[13:08] <SpeedEvil> quadcopter
[13:08] <evilroots> Too much $$
[13:08] <evilroots> i want one bad
[13:08] <evilroots> lol
[13:08] <SpeedEvil> Balloon will need replaced frequently
[13:08] <fsphil> you're going to be spending a fair bit on lifting gas and balloons
[13:09] <evilroots> Prob cheeper then a quad?
[13:09] <evilroots> Idk what lifting gas cost
[13:09] <fsphil> depends how many times you do it
[13:09] <evilroots> 1 or 2 times
[13:09] <fsphil> balloon probably cheaper then
[13:09] <evilroots> Just wanting to try it, a kite sounds like the better way to go
[13:09] <evilroots> Plus more control
[13:10] <edmoore> and much more stable
[13:12] <evilroots> Welp i gotta go find my kite lol
[13:12] <evilroots> Somewhere in the garage
[13:13] <gonzo__> my only big balloon was an 800gm latex, whioch would do for lifting a modest wire. £40 for the balloon and about the same again for the H2 to fill it
[13:14] <gonzo__> what country are you working from/in?
[13:14] <evilroots> USA, MT
[13:14] <evilroots> inflated kite is the type i have
[13:14] <AndyEsser> "I should like to live in Montana. You can do that? No papers?"
[13:14] <evilroots> ?
[13:14] <evilroots> https://images.duckduckgo.com/iu/?u=http%3A%2F%2Fwww.gombergkites.com%2FE-SL7.JPG&f=1
[13:15] <craag> AndyEsser: :D
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[13:15] <evilroots> Basicly my kite, and its rainbow too!
[13:15] <AndyEsser> evilroots: it's a line from a movie
[13:15] <AndyEsser> whenever anyone says Montana it reminds me of it
[13:15] <evilroots> Im from seattle
[13:15] <evilroots> God
[13:15] <evilroots> I hate it here
[13:15] <evilroots> But i havea roof over my head, was homeless
[13:16] <evilroots> dad let me move over with him, have my own place ( his other house )
[13:16] <AndyEsser> craag: can you name the film?
[13:16] <evilroots> I miss the gay bars :C
[13:16] <Ian_> You might find that the sky blue ones are better for not getting your butt shot off by angry land owners as they might conceivably blend into the background and become inconspicuous :)
[13:16] <AndyEsser> evilroots: does it actually rain a lot in Seattle?
[13:16] <craag> AndyEsser: of course, red october, watched it again last week.
[13:16] <evilroots> Im souused to say yes, but god no
[13:17] <fsphil> in the star trek universe, first contact with aliens takes place in montana
[13:17] <fsphil> </nerd>
[13:17] <AndyEsser> craag: good man :) Such a cracking film
[13:17] <AndyEsser> fsphil: 2059?
[13:17] <AndyEsser> ish
[13:17] <evilroots> Its just overcast with a light mist 90% of the time
[13:17] <fsphil> 2063
[13:17] <AndyEsser> sounds like the UK
[13:17] <SpacenearUS> New vehicle on the map: 03KD2EAT-14 - 12http://tracker.habhub.org/#!qm=All&q=KD2EAT-14
[13:17] <evilroots> It basicly is
[13:17] <evilroots> 280 non-sunny days a year
[13:17] <evilroots> Our summers tho
[13:17] <evilroots> Are epic
[13:17] <craag> AndyEsser: Although, I believe the line continues ".. I'd like to travel from state to state, you can do that? no papers?"
[13:17] <AndyEsser> fsphil: http://imgur.com/VDkyKih
[13:18] <AndyEsser> thanks google... not quite what I had in mind
[13:18] <AndyEsser> craag: that sounds about right
[13:18] <fsphil> hah
[13:18] <fsphil> might watch that again, was a pretty good film
[13:18] <evilroots> Wait startrek was a xmas moive?
[13:18] <evilroots> ( first contact )
[13:19] <Ian_> I'm currently reading a book by Lee Childs and Jack Reacher is presently in a small part of Montana . . . Unimpressed but ready for action!
[13:19] <evilroots> what book
[13:19] <fsphil> gosh, it's all happening in Montana
[13:19] <evilroots> I need to read some lee childs
[13:19] <evilroots> What book to start with ?
[13:19] <Ian_> We had a referendum recently, it seems that summer was cancelled :)
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[13:20] <evilroots> Okay
[13:20] <evilroots> I do not want to hear how fucking 50F is hot
[13:20] <evilroots> It is not
[13:20] <evilroots> Seattle gets 70 to 90s in the summer
[13:20] <evilroots> A all the UK'ers bitch when its 60 F
[13:20] <evilroots> OMG SO HOOOOOTTT
[13:21] Action: AndyEsser glares at SIbot
[13:21] <AndyEsser> 60F is about perfect temperature
[13:21] Action: evilroots doesnt like to hear about the uk and weather
[13:22] <evilroots> no
[13:22] <evilroots> 68 F is perfect
[13:22] <Upu> watch the language on here pls evilroots
[13:22] <mfa298> Ian_: although maybe things are looking better, no Borris for PM
[13:22] <evilroots> 60 is just a tad bit chilly wher i wear jeans
[13:22] <evilroots> 68 = perfect
[13:22] <Ian_> :) That has to Trump everything . . .
[13:23] <AndyEsser> Ian_: touche
[13:23] <evilroots> Upu, Its the internet, swearing is allowed.
[13:23] <AndyEsser> evilroots: we frequently have school children in here, therefore we try to keep language civil
[13:23] <Upu> We have minors on here so its not please :)
[13:24] <Ian_> This is a family friendly site you can be banned for using profanities
[13:24] <evilroots> Okay.
[13:24] <evilroots> Oh god
[13:24] <evilroots> Dont get me started
[13:24] <evilroots> I play games
[13:25] <evilroots> Ever join a christen server? Omg... Oh my god... Annoying!
[13:25] <evilroots> Anyway
[13:25] <evilroots> Ballons
[13:25] <evilroots> What does the NWS use for there ballons - the radio link? they wont tell me there freq for some reason
[13:26] <Ian_> 405MHz
[13:26] <Upu> 403Mhz probably
[13:26] <evilroots> i live 16 miles from the NWS office and they do 2 ballons a day
[13:26] <evilroots> idk what times
[13:26] <evilroots> I did see them send a few off aroun 5
[13:26] <fsphil> likely 00:00 and 12:00 UTC
[13:27] <fsphil> well, about 40 minutes before those times
[13:27] <evilroots> 405 or 403?
[13:27] <fsphil> yes
[13:28] <fsphil> you won't know until you find them. somewhere around those frequencies
[13:28] <evilroots> Thx i will keep an eye out
[13:30] <PE2BZ> evilroots do you own a SDR ? You can view 2 MHz of spectrum with a cheap RTL dongle, or 6 MHz (complete 400 - 406 MHz) with something like the airspy mini (us $ 99,-)
[13:30] <evilroots> Yes
[13:30] <evilroots> RTLSDR
[13:30] <Ian_> Watch for a physical launch. Times are standard mid-day and midnight https://en.wikipedia.org/wiki/Weather_balloon#Launch_time.2C_location.2C_and_uses
[13:31] <PE2BZ> evilroot familiair with SDR-Console ?
[13:32] <evilroots> No?
[13:32] <Ian_> Release times are UTC/zulu of course
[13:33] <PE2BZ> With SDR-Console (and also with HDSDR, and other software) you can timed record 2 MHz of spectrum around 00 or 12 Z and play it back to see on which frequency they transmit. Then see what type of modulation they use, most radiosondes in Europe are decodable
[13:35] <PE2BZ> but stick to SDR-Console V2. V3 is pre-beta and has no recording yet.
[13:36] <evilroots> Where can i find a good dl link?
[13:38] <PE2BZ> http://sdr-radio.com/Software/Download/Download-Kits V 2.3 build 2381 but you have to read on the website for the DLL´s for RTL-SDR support !
[13:39] <PE2BZ> http://sdr-radio.com/Radios/RTL-Dongles
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[14:22] <Laurenceb_> http://www.silabs.com/Support%20Documents/TechnicalDocs/EFR32FG1-DataSheet.pdf
[14:22] <Laurenceb_> this looks good
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[15:46] <SpacenearUS> New vehicle on the map: 03NSR-P - 12http://tracker.habhub.org/#!qm=All&q=NSR-P
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[16:03] <SpacenearUS> New vehicle on the map: 03NSR-L - 12http://tracker.habhub.org/#!qm=All&q=NSR-L
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[17:12] <AndyEsser> http://i.imgur.com/IiVOger.jpg
[17:12] <AndyEsser> Hunt the Thermo sensor
[17:12] <AndyEsser> likely to be the bottom left blue/white component?
[17:15] <SpacenearUS> New vehicle on the map: 03KC9LHW-11 - 12http://tracker.habhub.org/#!qm=All&q=KC9LHW-11
[17:16] <SpacenearUS> New vehicle on the map: 03WB9SKY-11 - 12http://tracker.habhub.org/#!qm=All&q=WB9SKY-11
[17:18] <PE2BZ> AndyEsser looks like what is in my Chromoterm, so I assume a yes. Is it near a hole in the housing ?
[17:18] <AndyEsser> not my photo sadly, friend of mines
[17:19] <kc2pit> Yeah, that's a common package for a thermistor.
[17:19] <AndyEsser> apparently doesn't have any writing on it, which means my mate can't easily replace it himself
[17:20] <PE2BZ> I assume the type number is the color combination.
[17:20] <PE2BZ> http://www.nickelforsale.com/product_321745/Blue-with-white-dot-coating-NTC-thermistor-10k.html
[17:21] <AndyEsser> that looks pretty spot on :)
[17:21] <AndyEsser> ta
[17:21] <kc2pit> Statistically, it's most likely a 10kohm NTC thermistor. They're pretty ubiquitous.
[17:21] <AndyEsser> Yea
[17:21] <kc2pit> Dunno if the colors do code for anything, but I wouldn't be surprised.
[17:21] <AndyEsser> cheers all
[17:45] <Ian_> Just a confidence point Andy. The picture shows a thermistor with leads and the Product Detail shows the package type as . . . surface mount! sigh! :)
[17:45] <AndyEsser> ha
[17:46] <Ian_> 10k does seem to be a pretty default value though, but let's not have details get in the way of a good story
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[17:46] <AndyEsser> Ah well, mate of mine might give it a try
[17:46] <AndyEsser> or call his boiler company and get them to fix it, and pay £50 for the privilege
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[17:47] <Ian_> 30p for the thermistor
[17:48] <Ian_> More for the coloured version!
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[17:58] <tweetBot> @daveake: How to make a USB-serial or Bluetooth LoRa receiver with Windows gateway. https://t.co/bJBMz0tz32 #ukhas
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[20:05] <samme> Hey there, I would like to know whether 20 channel GPS is good enough (as in accurate) or buy a higher channel such as EB-365 GPS module (50 channel)?
[20:06] <samme> http://www.robotshop.com/uk/gps-shield-arduino.html?gclid=Cj0KEQjwhtO7BRCtwuO9gfTH-fQBEiQAdJ8FYwRrJBruCaqkD6ONUh7QHNPO9g_SxsLINOI3T39RExQaAsNx8P8HAQ
[20:07] <samme> is it necessay to buy (3V GPS Antenna Magnetic Mount SMA) or can is normal antenna stick suffice?
[20:08] <Upu> Dunno if its about accuracy but for HAB not many modules work above 18000 meters
[20:08] <Upu> the Ublox ones do if put in the correct mode
[20:11] <kc2pit> Channel count might improve acquisition time, but it won't help accuracy. There are only 31 active GPS satellites, no more than half of which can be above the horizon at a time. Usually, fewer than 10 are visible.
[20:12] <samme> ya I read that too, below 18000 metre most GPS operate. You need 4 channels to determine your position (including elevation),
[20:12] <samme> kc2pit : I read that in the article, about the 5 degree
[20:13] <samme> kc2pit: so will 20 channel give the same result as 50 channel?
[20:13] <kc2pit> The 50-channel one will probably have a faster cold start time, all other things being equal.
[20:13] <kc2pit> But no better accuracy, again assuming everything else about the receivers is similar.
[20:14] <samme> kc2pit: can you define cold start time?
[20:14] <samme> I was researching and I landed on (http://www.hobbytronics.co.uk/gps/gps-shield-kit-arduino) or (http://www.robotshop.com/uk/gps-shield-arduino.html?gclid=Cj0KEQjwhtO7BRCtwuO9gfTH-fQBEiQAdJ8FYwRrJBruCaqkD6ONUh7QHNPO9g_SxsLINOI3T39RExQaAsNx8P8HAQ)
[20:15] <kc2pit> How long the GPS takes to acquire a fix if it wakes up with no knowledge of where it is or what time it is.
[20:15] <samme> which do you recommend?
[20:16] <Upu> ublox
[20:16] <Upu> always
[20:16] <samme> which is the second link
[20:16] <samme> ?
[20:16] <Upu> yeah
[20:16] <Upu> old one
[20:16] <samme> any reason?
[20:17] <Upu> https://ukhas.org.uk/guides:gps_modules
[20:17] <kc2pit> Ublox tells you how to make sure that their receivers won't shut off at 18km altitude. Few other manufacturers are so kind.
[20:18] <samme> but I am making a cubesat size payload box...I read the antenna is big :/
[20:18] <samme> plus in the some pic, they have ublox and few globarstar :S
[20:19] <Upu> https://store.uputronics.com/index.php?route=product/product&path=60_64&product_id=83
[20:19] <samme> EB-365 GPS modul
[20:19] <Upu> my shop
[20:19] <kc2pit> Note that while the second one shows a ublox sticker, the description says "GPS Shield based on EB-365 GPS module," and EB-365 is a SiRF III.
[20:19] <Upu> so much junk out there
[20:20] <samme> kc2pit : exactly! I was confused when I downloaded the manual
[20:20] <Upu> ublox documentation is superb
[20:21] <Upu> is this for HAB ?
[20:21] <samme> yes
[20:22] <Upu> right well don't mess about get a Ublox 8 based unit if you don't get one from my shop get one from CSG or something
[20:22] <samme> uBLOX MAX-M8Q SAW/LNA Breakout With Sarantel Antenna...............any Arduino sketch and connection???
[20:22] <Upu> there are far too many super cheap NEO-6M / fakes around
[20:22] <Upu> http://ava.upuaut.net/?p=738
[20:23] <Upu> I also sell the radio modules etc
[20:24] <samme> perfect ! thanks ! will read the article and get back to you. thanks you two Upu, kc2pit
[20:24] <Upu> nps
[20:24] <Upu> are you in the UK ?
[20:24] <samme> one last thing, 3 options...can you explain tht
[20:24] <samme> yes
[20:25] <Upu> yes sure you need the 5V Serial Level Converted one
[20:25] <Upu> if you're using an Arduino
[20:25] <Upu> where abouts in the UK ?
[20:27] <Upu> btw if you want to see some crap http://www.dx.com/p/add-on-gps-module-gps-hat-module-for-raspberry-pi-2-model-b-b-424254 <- the time pulse output "PPS output on fix, by default connected to pinGPIO5." Not actually connected on the PCB
[20:28] <Upu> http://www.catb.org/esr/faqs/stratum-1-microserver-howto/bluewire.jpg
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[20:45] <richrboo_> Hi, I've noticed results from habhub/calc differ from predict/habhub calc
[20:45] <richrboo_> And not sure why. Or what I might be doing wrong
[20:47] <Upu> oh think the Sony camera is buggy
[20:47] <Upu> it stops after xx pics
[20:47] <Upu> speak to Dave
[20:47] <Upu> and thx for link
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[21:09] <daveake> Yeah you need to update the Pi firmware
[21:10] <daveake> I've not seen any issues since I did that
[21:14] <SpacenearUS> New vehicle on the map: 03QM-Bus_chase - 12http://tracker.habhub.org/#!qm=All&q=QM-Bus_chase
[21:18] <richardeoin> I'm working on a Pi Zero based tracker, with a mass target of 50 grams https://github.com/bristol-seds/pico-pi-rel
[21:21] <richardeoin> glad the issue with the sony camera appears to have been fixed
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[21:43] <samme> Upu: Manchester, btw the website link u provided me (http://ava.upuaut.net/?p=738) it says max altitude of 12 km :/
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[21:44] <Geoff-G8DHE-Lap> Only by default, you have to switch it to flight mode for above 12km
[21:44] <Geoff-G8DHE-Lap> see towaeds the end of the forst page for setting flight mode
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[21:55] <Laurenceb__> lul https://tech.slashdot.org/story/16/06/30/208253/netherlands-gets-first-nationwide-internet-of-things
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[21:56] <Laurenceb__> I can't see this working well
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[21:59] <SpeedEvil> yeah
[21:59] <SpeedEvil> you get hideous routing penalties
[22:00] <SpeedEvil> and 'distant' (non-demodulatable) noise goes up linearly with distance due to 1/r^2
[22:01] <Laurenceb__> well also LoRa is basically a con
[22:01] <Laurenceb__> high data rate PSK with FEC and channel negotiation/ interference avoidance would be much better
[22:04] <SpeedEvil> yeah
[22:04] <SpeedEvil> but you can't do that
[22:04] <SpeedEvil> If you can't demodulate, you can't avoid
[22:04] <SpeedEvil> (assuming certain things)
[22:05] Action: SpeedEvil wishes he could cite the nice paper on this.
[22:06] <Laurenceb__> TI forum is good for a tl;dr intro
[22:06] <Laurenceb__> https://e2e.ti.com/support/wireless_connectivity/proprietary_sub_1_ghz_simpliciti/f/156/t/343273
[22:23] <Laurenceb__> this is kind of nice https://hackaday.io/project/11224-mechaduino
[22:23] <Laurenceb__> I'm somewhat unconvinced by the torque mode
[22:23] <Laurenceb__> would expect lots of ripple trying that with a stepper
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[23:03] <michal_f> interesting link http://esrl.noaa.gov/gmd/ozwv/wvap/sw.html
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[23:11] <samme> (https://www.openimpulse.com/blog/products-page/product-category/gy-neo6mv2-gps-module/) operational limit is 50,000m....is this possible? :O
[23:16] <daveake> Possible for the GPS? Yes. Possible for a regular latex balloon? No.
[23:19] <samme> got it (Y)...but it is possible to use for HAB?
[23:20] <samme> daveake: thanks for the quick reply :)
[23:20] <daveake> Er, yes, of course.
[23:20] <daveake> Just remember to put it into flight mode otherwise it'll crap out at 12km.
[23:23] <samme> setting in flight mode will be done through the Arduino code? https://ukhas.org.uk/guides:ublox6 (Software Serial Configuration Example)
[23:25] <samme> daveake: I haven't bought the module, just want to clear all doubts before buying it.
[23:26] <daveake> yes
[23:26] <michal_f> https://s32.postimg.org/wfxbdgq1x/NOAA_vs_HABHUB.jpg compared predictions with that other sofware
[23:26] <michal_f> until burst they much pretty close
[23:26] <michal_f> match*
[23:28] <daveake> I don't how how you've got those two, but the NOAA one is clearly wrong
[23:30] <daveake> The initial descent is much much faster than the ascent, so the shape of the descent curve should be different (specifically, in your example, it should turn north much earlier)
[23:30] <michal_f> yeah, i probably provided bad data for descent
[23:31] <daveake> yeah that's my guess :)
[23:31] <michal_f> have you ever used that software daveake ?
[23:33] <michal_f> ok, now they're almost same
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[23:39] <michal_f> ok, time to bed. bye all
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[00:00] --- Fri Jul 1 2016