highaltitude.log.20150426

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[03:35] <SpacenearUS> New vehicle on the map: 03Va2djd_chase - 12http://tracker.habhub.org/#!qm=All&q=Va2djd_chase
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[05:38] <Neil_M0CJM> Morning all
[05:43] <Geoff-G8DHE> Morning, AJ signals coming in
[05:52] <Geoff-G8DHE> Anyone else hearing APJ09 signals ?
[05:52] <G8KNN> Yes, very strong here
[05:53] <Geoff-G8DHE> Likewiase but no decode from them it seems about 60% each string ?
[05:54] <G8KNN> Odd, decoding OK here
[05:54] <Geoff-G8DHE> Nothing on the map either from you ?
[05:55] <G8KNN> Nothing on the map, looks like there is a problem with the flight doc?
[05:55] <Geoff-G8DHE> Ah
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[05:58] <Geoff-G8DHE> Ah is it only telemetry in APJHAB9 but nothing in the SSDV perhaps
[05:58] <Geoff-G8DHE> oh no APJ09 has now been sen
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[06:15] <SpacenearUS> New vehicle on the map: 03APJHAB9 - 12http://tracker.habhub.org/#!qm=All&q=APJHAB9
[06:15] <daveake> Good, that worked then :)
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[06:19] <Neil_M0CJM> Morning all
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[06:47] <Geoff-G8DHE> Gah!! Changed a USB lead to the Airspy - noisy signal on it grrr :-(
[06:50] <Martin_G4FUI> Great signal from APJ09 here in Penrith ...
[06:51] <Neil_M0CJM> Can someone please remind me of the URL where the images are uploaded to
[06:52] <PE2G> http://ssdv.habhub.org/
[06:52] <jcoxon> http://ssdv.habhub.org/
[06:52] <Neil_M0CJM> Thankyou
[06:53] <Upu> !dial APJHAB9
[06:53] <SpacenearUS> 03Upu: Can't find a flight doc matching your query
[06:53] <Upu> !dial APJ09
[06:53] <SpacenearUS> 03Upu: Latest dials for 03APJ09 10(a030): 03434.5 MHz, 434.350885 MHz, 434.411 MHz, 434.3506 MHz, 434.350654 MHz, 434.35292 MHz, 434.350886 MHz, 434.350691 MHz, 434.350868 MHz, 434.64117 MHz
[06:54] <Martin_G4FUI> Googling "habhub ssdv" also gave the answer (but not as quickly as the boys above!)
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[06:55] <Upu> hmm
[06:55] <jcoxon> quite a cloudy day for a downward facing camera
[06:55] <Upu> intermittant ?
[06:56] <Upu> oh 2 flights up
[06:56] <Upu> whats the other one ?
[06:57] <Geoff-G8DHE> APJ09 SSDV and APJHAB telemetry only
[06:58] <Upu> rgr
[06:58] <daveake> No they're both sending telemetry
[06:58] <daveake> But APJ09's payload doc is wrong
[06:58] <Geoff-G8DHE> you can have an intermittent USB lead infact two if you like!
[06:59] <hyde00001> Newbie question... Tracking APJ09 I appear to be decoding SSDV packets OK, but all my telemetry strings are bad. Fledge waterfall looks OK...Any hints on what i'm doing wrong?
[06:59] <hyde00001> FLDIGI
[06:59] <Upu> nothing probably
[06:59] <Upu> images have error correction
[06:59] <Upu> telemetry doesn't
[07:01] <hyde00001> So SSDV easier to capture than telemetry? Thus if my signal weak then I'd get SSDV first... Only using poxy aerial, so that makes sense
[07:02] <hyde00001> I'm assuming the SSDV RX window in FLDIGI shows what I'm personally decoding is that right?
[07:02] <daveake> yes
[07:04] <PE2G> hyde00001: APJHAB9 (at 50 bd) uses 7 N 1, not 8 N 1
[07:05] <daveake> Also, not that it makes any difference I think, but APJ09 is 8 N 2 not 8 N 1 as advertised
[07:05] <daveake> (It's a PITS and that's hard-wired in the code)
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[07:11] <hyde00001> So as usual, now I'm a bit more confused - I'm following the RTTY 300 stream. Is there also an intermitent 50 stream on the same frequency?
[07:11] <Upu_> thats a little higher up
[07:12] <Geoff-G8DHE> APJ09 on 434.350.844 os SSDV and telemetry
[07:13] <daveake> It's 2 separate trackers
[07:13] <Geoff-G8DHE> APJHAB9 on 434.395 is telemetry plus dots intermittent
[07:15] <hyde00001> Aaah. Was relying on "?" view on the tracker to provide the frequency information, but I see (now) from the mailing list the 50 baud information...
[07:16] <daveake> The reason APJHAB9 wasn't on the map earlier is that there was no payload doc, so I added one
[07:16] <hyde00001> Interestingly, i fiddled with the 300 stop bits, which didn't immediately do anything. Then went and searched the mailing list and now telemetry decodes fine - so just leave things alone and they sort themselves out...
[07:16] <daveake> APJ09 however has a faulty payload doc (it has a validiity check added, which is failing)
[07:17] <daveake> And as that payload doc is referred to by a live/approved flight doc, I'm out of options
[07:17] <daveake> dl-fldigi ignores the stop bits setting (I'm told)
[07:17] <hyde00001> It didn't seem to make any difference changing them, so that makes sense
[07:18] <hyde00001> Odd though, with my very simple understanding that would seem important...
[07:18] <hyde00001> Perhaps understanding just too simple..
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[07:20] <Geoff-G8DHE> It only uses the Stop bits setting for Tx allegedly, provided you have one stop bit on Rx it makes no difference.
[07:21] <hyde00001> Nice explanation
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[07:22] <hyde00001> FWIW, back to not decoding telemetry. Perhaps I do need a better aerial after all, seeing as the payload is only 30 mile away from me...
[07:22] <Geoff-G8DHE> Probably, what are you using at the mement
[07:22] <Geoff-G8DHE> moment even
[07:23] <hyde00001> Roof mounted magnetic whip thingy. HAs worked well on top of car when following along 50 baud trackers
[07:23] <hyde00001> currently sitting on a box next to open garage door
[07:23] <Geoff-G8DHE> Ah yes it needs a groundplane to work against, unless you have a metal roof no good!
[07:23] <hyde00001> which is pointing vaguely towards payload
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[07:24] <Geoff-G8DHE> also don't point the whip at the Tx, it is best at about 30-40 degrees above horizon with whip pointing up.
[07:25] <hyde00001> Poor explanation on my behalf. Whip standing vertically, open garage door is pointed vaguely at target
[07:26] <Geoff-G8DHE> is the garage door horizontal ?
[07:26] <Geoff-G8DHE> is it magnetically attached to door ?
[07:26] <hyde00001> just about -nice idea ill try sticking it on that!
[07:26] <Geoff-G8DHE> doors ae nomally alu.
[07:26] <hyde00001> currently just sticking to a small metal box for balance...
[07:27] <Geoff-G8DHE> needs to be a ground plane at least 1/4 wave length in size as minimum
[07:28] <Reb-SM3ULC> morning! (late)
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[07:28] <hyde00001> and hey presto, first telemetry packet received uploads
[07:29] <hyde00001> And waterfall now alive with more signals
[07:29] <nigelp> SSTV Stopped ??
[07:30] <Geoff-G8DHE> polar diagram of groundplane aerial http://electronicdesign.com/site-files/electronicdesign.com/files/uploads/2013/07/0613WTDantennas_06.gif
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[07:32] <hyde00001> Mmm. Really don't know enough to interpret that...
[07:32] <hyde00001> The red and black represent?
[07:32] <Geoff-G8DHE> The black represents the signal strength by vertical angle
[07:32] <hyde00001> Y axis is i assume db signal?
[07:32] <Geoff-G8DHE> forget the red one not relevant
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[07:33] <Geoff-G8DHE> you have a null when aerial points at source
[07:33] <Neil_M0CJM> SSDV seriously fading in and out
[07:33] <Geoff-G8DHE> best gain at around 30-40 degress above grounbdplane - normally horizontal for groundplane
[07:33] <mclane_> seems that ssdv stopped?
[07:34] <hyde00001> Aaaah. I'd heard people discuss this before. I noticed it last week when nearby flight went directly overhead - now I can see the justification in the graph
[07:34] <Neil_M0CJM> Stilll decoding SSD here but seriously dropping in and out
[07:34] <mclane_> I only receive coordinate data
[07:34] <Geoff-G8DHE> Its all telemetry no SSDV at the moment
[07:35] <mclane_> soundx like burst
[07:35] <Geoff-G8DHE> still climbing lookat at height
[07:35] <Geoff-G8DHE> 34Km
[07:37] <mclane_> 27921
[07:37] <mclane_> 27598
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[07:39] <hyde00001> currently heading right for me. Opening garage door a little wider to facilitate landing
[07:39] <Geoff-G8DHE> APJ09 height significantly different from APJHAB height
[07:40] <hyde00001> "We are also testing a Pico Tracker for fun. It has a very drifty RFM22 TX module and is hanging just below the parachute, above APJ09." Might they have separated ?
[07:41] <Geoff-G8DHE> Was wondering that myself!
[07:41] <Martin_G4FUI> What't the reason for non-continuous telemetry on an Up/Down flight?
[07:41] <daveake> How different are the altitudes ?
[07:41] <Geoff-G8DHE> Apj09 says 29,461
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[07:41] <Geoff-G8DHE> sry 24,461
[07:42] <Geoff-G8DHE> APJHAB says 17456
[07:42] <daveake> woah
[07:42] <daveake> that's quite an elastic line :p
[07:43] <Reb-SM3ULC> Anyone around that have heard anything about the swedish flight next weekend? Haven't seen anything on the list.
[07:43] <daveake> The APJHAB9 descent looks reasonable
[07:43] <Geoff-G8DHE> time difference between frames asw ell, maybe being buffered ?
[07:44] <PE2G> Both signals have disappeared below my horizon
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[07:44] <hyde00001> It turns away from me in disgust at my poor tracking...
[07:45] <Martin_G4FUI> learning from one's mistakes is the only way, hyde00001 !
[07:47] <mclane_> landing quite close to Luton airport?
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[07:50] <hyde00001> I was going to ask about the airport. When I ran a prediction last night, it seemed likely to land reasonably close. How close in your expert opinions is "OK" when considering if/when to launch?
[07:50] <hyde00001> Martin_G4FUI: Splendid as I seem to making lots of them!
[07:51] <Martin_G4FUI> We've all been there, and experience never seems to eliminate _all_ bloopers :)
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[08:01] <jcoxon> hyde00001, if in doubt postpone the launch
[08:01] Nick change: fl_0 -> fl_0|afk
[08:01] Nick change: fl_0|afk -> fl_0
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[08:02] <hyde00001> jcoxon - indeed, but trying to get a sense of "how close" is "too close"to a major (or indeed) minor airport
[08:03] <hyde00001> I assume people mostly "aim" for rural rather than urban areas too - i.e. don't land it outside Buckingham Palace...
[08:04] <fsphil> just to add to earlier, the stop bit setting has no effect on dl-fldigi's decoding of RTTY but the SSDV code does use it to calculate missing bits. the effect of having that wrong will be minimal though
[08:04] <hyde00001> OK, so worth getting right then !
[08:05] <daveake> Yeah, aim for a nice sparsely populated area (and I mean people and trees) well away from airports and other undesirable landing spots
[08:05] <hyde00001> I've been wondering about trees. Do people tend to take a ladder/stick along?
[08:07] <hyde00001> Looks like it going to miss the airport and the M1, no bad thing!
[08:09] Nick change: priyesh_ -> priyesh
[08:10] <Reb-SM3ULC> hyde00001: golf on you :)
[08:11] <hyde00001> fore
[08:12] <daveake> BTDT :p http://www.daveakerman.com/?p=1658
[08:13] <daveake> Specifically ... http://www.daveakerman.com/wp-content/uploads/2014/09/15.png
[08:13] <hyde00001> I wonder if you get a free drop from a falling hazard?
[08:14] <daveake> There was a competition on when mine landed :/
[08:15] <hyde00001> daveake: nice safe approach shot, well away from the bunker. Should be simple chip for the PITS to find the hole
[08:17] <hyde00001> So FWIW, I still see a very faint "one line" signal on my APJ09 waterfall. Am I deluding myself or is this the payload (~50km away). No decode obviously. Or is this more likely to be a spurious signal from elsewhere?
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[08:18] <Geoff-G8DHE-M> Spurious, plenty of them lying around ;-)
[08:20] <hyde00001> Thanks for chat. Better go and make my wife that cup of tea I promised her about 2 hours ago...
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[08:38] Action: sumie-dh catch one of last RS92-SGPD launched from Prague-Libus station at early morning http://www.sumie-dh.cz/images/gallery/26-4-sgpd-2.jpg
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[08:46] <DL7AD> gmorning
[08:47] <jonsowman> htop
[08:47] <jonsowman> heh, oops
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[08:49] Nick change: fl_0 -> fl_0|afk
[08:50] Nick change: fl_0|afk -> fl_0
[08:52] <PE2G> sumie-dh: Congrats on your catch! Will Prague use another type of sonde?
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[08:59] <sumie-dh> PE2G : Prague station use mostly common RS92SGPL / RS92SGPL with ozone sensor aka RSA
[09:01] <PE2G> sumie-dh: Tnx. I know the RS92SGPL, it´s lighter than the SGPD
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[09:03] <mclane_> Hi dave, I need some advice concerning LoRa
[09:03] <daveake> APJ09 recovered https://pbs.twimg.com/media/CDgZ-RSW8AAkZtT.jpg:large
[09:04] <sumie-dh> PE2G: yeah, weight is probably reason why they end with SGPD, last was launched today at 6:00 UTC, my radiosonde was launched at 0:15 UTC
[09:04] <mclane_> Hi daveake, I need some advice concerning LoRa
[09:04] <daveake> yeah I saw :) go on ...
[09:04] <mclane_> I want to transmit ssdv via lora
[09:04] <daveake> ok
[09:05] <mclane_> what are the best choices fro bandwidth, spreading, tc?
[09:05] <PE2G> sumie-dh: What freq is Prague using?
[09:05] <sumie-dh> 403.8 MHz
[09:05] <mclane_> .. for bandwidth, spreading, errorcoding, etc.?
[09:06] <PE2G> sumie-dh: OK, will try that. Maybe I can receive it at >30 km alt.
[09:07] <daveake> I've not done enough flights to say what's best, however I have used, with very good results, Implicit/error 4:5, 20.8k b/w, SF 8
[09:07] <daveake> I have a few preset mode combinations and that's one of them
[09:07] <daveake> See https://github.com/PiInTheSky/pits/tree/LoRa/tracker
[09:08] <mclane_> ok, will try those settings
[09:08] <daveake> It's the fastest combination for <25kHz b/w
[09:08] <daveake> For >25kHz you can get a higher data rate but then you're limited to 10% DC
[09:10] <mclane_> ok - I have designed a tracker board for the pi a+ with an RFM98
[09:11] <mclane_> hope to fly that soon, if the regulations in germany will be updated...
[09:11] <daveake> yeah
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[09:12] <mclane_> so that we can avoid bureaucracy
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[09:15] <mclane_> different question: do you know how to produce 50 baud rtty with the rfm98? I tried to just switch the frequency
[09:16] <mclane_> however, decoding in dl-fldigi is poor
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[09:16] <daveake> I've not tried that
[09:16] <mclane_> I do not know if this is due to the os (linux) or due to latency in the state machine of the rfm98
[09:16] <daveake> I flew a tracker with both lora and rtty but I just added an NTX2
[09:18] <mclane_> can you receive lora in the chase car?
[09:19] <mclane_> (at least telemetry data)
[09:21] <daveake> Sure
[09:22] <daveake> I have a Pi that can receive and upload in the car
[09:22] <daveake> and a handheld receiver that doesn't upload
[09:22] <daveake> and yes the Pi does SSDV as well as telemetry
[09:22] <mclane_> cool
[09:24] <daveake> Now I've got some other stuff out of the way, I'll do some more lora flights
[09:25] <mclane_> I just finished the layout of a simple lightweight tracker which I can put under a 100g balloon
[09:26] <Geoff-G8DHE> Didn't someone do 50 RTTY using FSK mode by sending multipile bits instead of one bit per bit ?
[09:27] <mclane_> rfm98 + mega328 + serial flash memory + max8 + ds18B20
[09:27] <daveake> cool. I have something similar that Upu made
[09:28] <PE2G> daveake: Will there be a software LoRa decoder?
[09:28] <daveake> Probably
[09:29] <daveake> Someone smarter than me can write it
[09:29] <daveake> But the device is £5/€6 so it's cheap to make something
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[09:30] <daveake> There is a decoder on github but I think it's a bit limited as to what modes it can decode
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[09:30] <daveake> I've not tried it
[09:32] <PE2G> daveake: Tnx for the info. Will look for the decoder on github
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[09:34] <Geoff-G8DHE> YUp here Matt uses 600 Baud rate but sends each bit 16 times 80.124
[09:34] <Geoff-G8DHE> https://groups.google.com/d/msg/ukhas/iHU-Du4c-KY/BDVDsmH4cGMJ
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[10:01] <SpacenearUS> New position from 03SP9UOB after 03a day silence - 12http://tracker.habhub.org/#!qm=All&q=SP9UOB
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[10:24] <PB0AHX-Herman> !flights
[10:24] <SpacenearUS> 03PB0AHX-Herman: Current flights: 03Radiozlot - 437.595 MHz 10(a391), 03MM4 10(3063), 03APJ09 10(a030), 03June Sky BAC Flight 10(c957)
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[11:35] Nick change: Matt_soton -> mattbrejza
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[11:46] Nick change: Davespice_ -> Davespice
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[12:03] Nick change: fl_0 -> fl_0|afk
[12:10] <mikestir> OT: anyone here familiar with MIPS CPU?
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[12:17] <SpacenearUS> New vehicle on the map: 03F4HHV - 12http://tracker.habhub.org/#!qm=All&q=F4HHV
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[12:35] <SpacenearUS> New vehicle on the map: 03W0ISU-10 - 12http://tracker.habhub.org/#!qm=All&q=W0ISU-10
[12:35] <SpacenearUS> New vehicle on the map: 03W0ISU-11 - 12http://tracker.habhub.org/#!qm=All&q=W0ISU-11
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[12:49] <pc1pcl> !dial Radiozlot
[12:49] <SpacenearUS> 03pc1pcl: Can't find a flight doc matching your query
[12:50] <pc1pcl> !dial a391
[12:50] <SpacenearUS> 03pc1pcl: Latest dials for 03SP9UOB_SOSNA_GORA 10(a391): 0318.099 MHz, 434.596 MHz, 437.59742 MHz, 437.596 MHz, 437.595 MHz, 437.69 MHz
[12:50] <pidpawel> Bo. nasi \o/
[12:50] <pidpawel> :)
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[13:09] <SpacenearUS> New vehicle on the map: 03KB1YOF-11 - 12http://tracker.habhub.org/#!qm=All&q=KB1YOF-11
[13:09] <SpacenearUS> New vehicle on the map: 03KC1DEO-11 - 12http://tracker.habhub.org/#!qm=All&q=KC1DEO-11
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[13:48] <SpacenearUS> New vehicle on the map: 03SP5JI_chase - 12http://tracker.habhub.org/#!qm=All&q=SP5JI_chase
[13:59] <SpacenearUS> New vehicle on the map: 03KC1DCX-11 - 12http://tracker.habhub.org/#!qm=All&q=KC1DCX-11
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[14:08] <infaddict> afternoon all
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[14:23] <Rohad> Hi all, quick question this morning -- When using the PITS board, where do I access data & pictures on the Pi itself?
[14:24] <Rohad> Is it in a certain subdirectory?
[14:28] <Upu> hi Rohad
[14:29] <Upu> ping daveake
[14:29] <Upu> need to put that on the FAQ's :)
[14:29] <Upu> Dave will know
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[14:32] <infaddict> finally back home and have soldered up my PCB tracker. it works other than SD breakout board is duff and isnt working. i need to desolder it.
[14:32] <infaddict> any tips for desoldering 6 pins? i have a sucker and braid so hopefully it'll be easy!
[14:32] <Upu> be prepared to sacrifice the pins
[14:33] <infaddict> i dont mind that Upu I have loads. do you mean might have to cut them?
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[14:34] <infaddict> i'm just relieved its not my board design. i have proved its the 2nd sd board my temporarily wiring up 1st sd board and it works fine.
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[14:34] <infaddict> brand new SD board out of bag and its goosed grrrr
[14:34] <mikestir> 6 SMT pins or through hole?
[14:34] <infaddict> lesson learned to test components before soldering to board
[14:34] <infaddict> through hole 2.54mm header pins mikestir
[14:35] <infaddict> guess i have choice to 1) desolder from underside of PCB and remove SD breakout+pins together... 2) desolder from top and remove the SD breakout only
[14:35] <mikestir> you might draw the solder out with the braid if you use plenty flux. If you can get in to cut the pins off and desolder individually though that will definitely be easier
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[14:36] <mikestir> there's a real risk of pulling the through plating out and/or damaging the pads either side
[14:36] <infaddict> where would you normally cut?
[14:37] <mikestir> anywhere to separate them, but if it's all soldered down flush that might be hard
[14:37] <infaddict> yep very flush. could run a junior hacksaw blade between them as last resort.
[14:38] <infaddict> will try sucker & braid approach first
[14:38] <infaddict> just annoyed a brand new component has let me down
[14:38] <mikestir> the other thing you can try is getting as much of the solder out as you can using the sucker and braid then giving the pins a little wiggle with pliers before trying to pull them out
[14:38] <mikestir> a sideways wiggle
[14:38] <infaddict> ok thx mikestir
[14:38] <mikestir> helps to break off any remaining bits of solder rather than pulling the plating out
[14:39] <infaddict> also my GPS has yet to lock on now its on my PCB, but hoping its the position indoors i am testing it in... it worked here on breadboard.
[14:40] <infaddict> gonna try it outdoors when it stops raining
[14:41] <mikestir> gps signal strength will vary with time as well as the constellation changes, so you could have been lucky before
[14:41] <infaddict> yep true, no reason for it not to work. its off the board (no copper).
[14:41] <infaddict> i am getting good data (time etc)
[14:41] <infaddict> just not a lock
[14:42] <SpacenearUS> New position from 03EDUPIC15 after 03a day silence - 12http://tracker.habhub.org/#!qm=All&q=EDUPIC15
[14:43] <mikestir> before you try to take the SD breakout off, is there anything obviously wrong with it?
[14:43] <mikestir> you could try reflowing the pins on the connector if they're accessible
[14:43] <infaddict> nope brand new. i get good continuity with DMM between all pins (top and bottom) back to arduino.
[14:43] <infaddict> i get 3.2V on the vcc+gnd pins
[14:43] <infaddict> so i think its all connected properly
[14:44] <infaddict> i am using same SD card that works in my 1st SD reader no problem
[14:44] <mikestir> are you checking continuity back to the actual connector pins or just the header?
[14:44] <infaddict> last night as a test, i quickly wired 6 spare wires onto the pins underneath and ran them to my original SD reader - worked fine
[14:45] <infaddict> i am checking continuity between header pins (top of them) on 1) arduino and 2) SD breadkout board
[14:45] <infaddict> my PCB is kinda like a motherboard housing breakout boards
[14:45] <mikestir> so can you see the pins on the SD connector itself, or are the underneath the connector housing?
[14:45] <infaddict> my thinking is that if top of pins is showing continuity, it must be flowing through PCB correctly
[14:46] <infaddict> you can see some of the pins, others covered by housing
[14:46] <infaddict> i could lookup the datasheet and test the tiny pins inside i guess... but i know my 1st SD board (identical to 2nd) works fine as per last nights test.
[14:46] <infaddict> so i am 99% sure its faulyt
[14:46] <infaddict> *faulty
[14:46] <mikestir> if you've got continuity to the headers on the breakout board there could still be a fault on the PCB, or more likely the SD card connector isn't soldered down properly
[14:46] <infaddict> i can try a re-solder first i guess, wont harm
[14:47] <mikestir> if the latter and you can get the iron onto them then a quick reflow might solve it
[14:47] <infaddict> yep good idea, might save time will do that thx mikestir
[14:47] <mikestir> would be worth trying before you risk wrecking the pcb pulling the pins out
[14:47] <infaddict> agreed
[14:47] <mikestir> do you have a flux pen?
[14:48] <infaddict> i have 10 PCB's but not enough of the expensive parts to rebuild a 2nd one (e.g. GPS and NTX2B). i have enough of smaller bits.
[14:48] <infaddict> yes i have a flux pen
[14:48] <infaddict> how should i use flux pen in a resoldering scenario?
[14:50] <mikestir> it will help the SMT joints to reflow without the need to add more solder
[14:50] <mikestir> put plenty on the accessible pins and heat them with the iron
[14:51] <SpacenearUS> New vehicle on the map: 03DL9UL_chase - 12http://tracker.habhub.org/#!qm=All&q=DL9UL_chase
[14:54] <SP9UOB-Tom> infaddict: if you want to desolder easilly just buy (or make by yourself) Rose's metal (it melts at about 90 deg C) and put it onto pins using soldering iron.
[14:55] <SP9UOB-Tom> infaddict: thermal capacity of the pins, pcb ant metal itself is large enough to remove any soldered elements :-)
[14:55] <infaddict> interesting, never heard of that
[14:56] <SP9UOB-Tom> Rose's metal is based on bismuth, tin and lead
[14:57] <SP9UOB-Tom> so it easilly can be mixed with regular soldering tin/lead metal
[14:58] <SP9UOB-Tom> im using it to make HAL layer on homemade PCBS using hust boiling water :-)
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[14:58] <SP9UOB-Tom> *Just
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[15:14] <Lunar_Lander> hello again
[15:20] <infaddict> hey Lunar_Lander
[15:30] <SpacenearUS> New vehicle on the map: 03KD0MSL-11 - 12http://tracker.habhub.org/#!qm=All&q=KD0MSL-11
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[15:46] <SpacenearUS> New vehicle on the map: 03KD9CIN-11 - 12http://tracker.habhub.org/#!qm=All&q=KD9CIN-11
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[15:54] <NSPACE1> hi guys, how can i get a track from habhub from an old launch
[15:55] <pc1pcl> NSPACE1: http://habitat.habhub.org/ept/
[15:55] <NSPACE1> thanks will check it out.
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[16:00] <SpacenearUS> New vehicle on the map: 03WA2MJM-1 - 12http://tracker.habhub.org/#!qm=All&q=WA2MJM-1
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[16:03] <SpacenearUS> New vehicle on the map: 03INFCU1 - 12http://tracker.habhub.org/#!qm=All&q=INFCU1
[16:04] <K9FH> Does anyone here have current info on JSKY1?
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[16:04] <christopherlee> Hi, does any one have a good suggestion of some where i can find some information that will help me work out how to use a scanner? Have used SDR ok in past but a scanner is all new.
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[16:08] <infaddict> phew, back on the map finally. cold start took 15 mins on PCB, longer than the usual 5 minutes on my breadboard.
[16:10] <NSPACE1> there must be an error on the old payloads data page because even though the payload is visible unde rthe drop down the export data field does not show any data. We had a NSPACE1 succesful track and launch yesterday but lost comms and did not recover
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[16:13] <fsphil> christopherlee: not much difference other than how you operate them. has various modes (FM/AM/SSB), just select appropriate one and tune it
[16:14] <fsphil> physical radios can sometimes have very cryptic user interfaces
[16:14] <fsphil> especially handhelds
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[16:15] <christopherlee> Thtas what i was expecting... managed to get to USB mode etc
[16:15] <christopherlee> My payload is transmitting right by me and sem to be struggling.
[16:16] <fsphil> you probably have to tune around a bit to find the real signal, it's never exactly where you expect it
[16:16] <fsphil> and will be surrounded by weaker images of it
[16:16] <fsphil> when you're that close
[16:16] <Laurenceb> http://tiffzhang.com/startup/index.html?s=69612115395
[16:18] <christopherlee> switched off payload and still got some background signal.. suspect i mgiht have issues else were...
[16:18] <christopherlee> Do scanners have a filter range as i would expect to have to set on the SDR, eg narrow in on the signal?
[16:21] <mikestir> what scanner is it?
[16:21] <christopherlee> Yupiteru MVT-7100
[16:22] <mikestir> no direct experience with that one, but it should be a case of selecting USB mode and tuning around as fsphil says
[16:22] <Geoff-G8DHE-Tab> Nspace1, if you look here there is a kml file of what was received http://360.g8dhe.net/HAB_Flights/2015_Flights/NSPACE1_20150425/
[16:22] <mikestir> go in 1 kHz steps then reduce the step size when you find it
[16:23] <christopherlee> cheer
[16:23] <christopherlee> cheers
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[16:26] <christopherlee> I think i might be getting close, thing signal is drifting a fair bit when it starts up due to radio temp as it comes and goes
[16:27] <Geoff-G8DHE-Tab> NSPACE1, Try this file http://360.g8dhe.net/HAB_Flights/2015_Flights/NSPACE1_20150425/
[16:27] <NSPACE1> Thanks Geoff i found that one. I am tired from all the running and my brain is battling today :-)
[16:27] <mikestir> christopherlee: the other thing you could try if you're struggling to find it is search in say 5 kHz steps but in FM mode until you find a carrier, then switch to SSB and reduce the step size
[16:28] <mikestir> the fm filter is wider so makes the tuning less critical for an initial search
[16:28] <christopherlee> ok
[16:31] <christopherlee> Perfect, lots more playing to get used to it but its working :-) getting a decode in dl-fldigi as well
[16:31] <christopherlee> Thanks for all advice
[16:31] <NSPACE1> thanks guys cheers till later
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[16:38] <SpacenearUS> New vehicle on the map: 03F4HHVCAR_chase - 12http://tracker.habhub.org/#!qm=All&q=F4HHVCAR_chase
[16:40] <Lunar_Lander> hm strange pricing
[16:41] <pc1pcl> christopherlee: in case you don't have it, a manual for that scanner can be dlded at http://www.scannernet.nl/downloads/download-handleidingen?download=166:handleiding-yupiteru-mvt-7100-engelstalig
[16:41] <Lunar_Lander> the same mosfet (IRF640) 1.65¬ on farnell, just over 5¬ on mouser
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[16:41] <christopherlee> pc1pcl: cheers
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[17:08] <SpacenearUS> New vehicle on the map: 03SQ5RWU_chase - 12http://tracker.habhub.org/#!qm=All&q=SQ5RWU_chase
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[17:20] <daveake> Upu / Road See http://www.pi-in-the-sky.com/index.php?id=handy-hints
[17:20] <daveake> Already didd that :-)
[17:20] <daveake> er Rohad
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[17:26] <SpacenearUS> New vehicle on the map: 03JSKY1 - 12http://tracker.habhub.org/#!qm=All&q=JSKY1
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[17:53] Nick change: fl_0|afk -> fl_0
[18:06] <SpacenearUS> New vehicle on the map: 03STRATOS_CHEM - 12http://tracker.habhub.org/#!qm=All&q=STRATOS_CHEM
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[18:10] <michemto> hey guys
[18:11] <michemto> I have a question
[18:11] <michemto> I have working PITS chip with Pi B+ and everything is working... BUT
[18:11] <michemto> I had to bring down custom shift to 600
[18:12] <michemto> and receive bandwidth filter up to 562
[18:12] <michemto> then i got good data
[18:12] <michemto> What is wrong?
[18:12] <michemto> http://puu.sh/hrGok/3e505311bf.png
[18:12] <michemto> another question - Why i wont get any temperature data from chip?
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[18:15] <mclane_> how do you link your receiver with the pc?
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[18:15] <mclane_> you should reduce the volume
[18:16] <mclane_> and switch off squelch
[18:18] <michemto> DJ-X11 to usb microphone to usb
[18:18] <michemto> i mean usb mic port
[18:20] <mclane_> it looks as if you record the sound via the microphone through the air and thus you have additionl acoustical noise
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[18:22] <michemto> Actually not
[18:22] <michemto> 3,5mm cable
[18:22] <michemto> male to male
[18:22] <michemto> is between scanner and pc
[18:22] <michemto> I got perfectly data from another flight last week
[18:22] <michemto> but my own chip is sending out this thing really werid
[18:22] <michemto> weird
[18:23] Nick change: fl_0 -> fl_0|afk
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[18:23] <michemto> Now I reduced volume and set everything to autoconfigure (loaded my payload
[18:23] <michemto> and i got this - http://puu.sh/hrHgr/5f18b683d6.png
[18:23] Nick change: fl_0|afk -> fl_0
[18:24] <michemto> Bringing back to custom shift 660
[18:24] <michemto> and its working...
[18:25] <mclane_> volume is still too high - data lines in the waterfall should not be red
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[18:27] <mclane_> what kind of transmitter do you use? NTX2b?
[18:27] <michemto> PITS new chip
[18:27] <michemto> MTX2
[18:27] <michemto> http://puu.sh/hrHH5/1dd4773fe0.png
[18:28] <mclane_> that looks better; you still have to reduce the shift to about 630 Hz
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[18:30] <michemto> Yeah
[18:30] <michemto> I understand...
[18:30] <michemto> My q is that why aint that like auto-conf gives me
[18:31] <michemto> Should i change something in my payload information so another guys could have correct info to listen this?
[18:31] <michemto> And my second q was that why I wont get temperature data?
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[18:32] <mclane_> yes that is recommended
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[18:33] <fsphil> you still have SQL on (bottom right)
[18:33] <fsphil> best to turn that off
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[18:34] <fsphil> shift of 600 should work fine with that
[18:34] <mclane_> for the temp sensor you need to load the onewire module
[18:34] <michemto> Please tell me more
[18:35] <michemto> Doesn't this PITS chip have built in temp sensor
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[18:35] <daveake> Yes a one-wire module
[18:35] <mclane_> it has (according to the schematics on github)
[18:35] <mclane_> but you need to load the 1 wire module:
[18:35] <daveake> You can query the temperature in the operating system
[18:36] <mclane_> sudo modprobe w1-gpio
[18:36] <mclane_> sudo modprobe w1-therm
[18:36] <mclane_> see e.g. here: http://www.modmypi.com/blog/ds18b20-one-wire-digital-temperature-sensor-and-the-raspberry-pi
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[18:37] <daveake> Well, more to the point ...
[18:37] <daveake> ... see https://github.com/PiInTheSky/pits/blob/master/tracker/startup
[18:37] <daveake> which does it for you :)
[18:39] <mclane_> dave: there might be a bug: sudo modprobe w1_therm instead of sudo modprobe w1-therm
[18:39] <mclane_> but I am not sure...
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[18:41] <daveake> w1_therm is, or was, correct
[18:41] <mclane_> I am loading the one-wire modules at boot (entry in /etc/modules)
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[18:43] <michemto> Well... as a pretty noob Pi user I have to ask if I have to do any more changes in PITS code to get this temperature (onewire) from 434mhz
[18:44] <daveake> "any more changes in PITS code" ...
[18:44] <daveake> ... have you made *any* changes to the code?
[18:45] <mclane_> first check if you can see the sensor data in the system files
[18:46] <mclane_> you should see the sensors in /sys/bus/w1/devices
[18:46] Nick change: fl_0 -> fl_0|afk
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[18:46] <daveake> michemto If you've followed the instructions on the pits web site exactly, then it should all work with no changes to anything
[18:46] Nick change: fl_0|afk -> fl_0
[18:47] <daveake> Sometimes Raspbian does change (e.g. the devtree thing) and it's possible that a recent change has broken onewire
[18:47] <daveake> but it would have to be very recent
[18:48] <M6XiMaN> Evenin' all
[18:50] <M6XiMaN> I am now officially 2E0XIM
[18:51] Nick change: M6XiMaN -> MaXimaN_2E0XIM
[18:53] <MaXimaN_2E0XIM> Now I need to look into getting the Full licence
[18:53] <SpacenearUS> New vehicle on the map: 03KC9VVJ-11 - 12http://tracker.habhub.org/#!qm=All&q=KC9VVJ-11
[19:01] <edmoore> congrats on intermediate MaXimaN_2E0XIM
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[19:01] <amell> congrats from here too
[19:02] <amell> really nice burst pics on the mailing list.
[19:02] <amell> would love to see a 240fps video of a burst.
[19:03] <Reb-SM3ULC> yepp, those were great!
[19:06] <amell> one here, but not high frame rate unfortunately -http://hugelol.com/lol/111325/comments_sort/new
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[19:12] <MaXimaN_2E0XIM> edmoore: Thanks :)
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[19:21] <Lunar_Lander> ariane webcast coming up http://arianespace.tv/
[19:23] <edmoore> oh cool, thanks Lunar_Lander
[19:23] <Lunar_Lander> you're welcome
[19:30] <Lunar_Lander> hold
[19:30] <Lunar_Lander> base problem
[19:31] <Lunar_Lander> "ensemble de lancement" red
[19:32] wb0vgi (ae14e895@gateway/web/freenode/ip.174.20.232.149) joined #highaltitude.
[19:34] <Lunar_Lander> it turned green again, but I wonder if they now really have to wait the 20 minutes the announcer just said
[19:35] <wb0vgi> is the line off to the southeast on habhub a predicted path?
[19:39] <Geoff-G8DHE-M> There are quite a few lines on the Tracker depends where your looking!
[19:44] <Lunar_Lander> autorisation lancement green
[19:46] <Lunar_Lander> 15 min
[19:46] <Hiena> Yup.
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[19:47] <Hiena> Seems they timed it to my XFLR simulation's end.
[19:50] <Lunar_Lander> :)
[19:50] <Lunar_Lander> hope it can go now after two aborts where the rocket was wheeled back into the assembly building
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[19:52] <Lunar_Lander> I am happy that the guy who talks so much isn't on the mic tonight :D
[19:53] <Lunar_Lander> synchronized sequence
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[19:55] <Lunar_Lander> interesting music
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[19:56] <Laurenceb> what do those people actually do...
[19:56] <Laurenceb> apart from look busy
[19:57] <Lunar_Lander> good question
[19:57] <Lunar_Lander> they once showed a room where people look at the live telemetry
[19:57] <Laurenceb> manually checking data at 2 minutes to launch is a really bad idea
[19:57] <fsphil> lauching a tv sat?
[19:58] <Lunar_Lander> and then said that it takes days to go to the recordings afterwards
[19:58] <Lunar_Lander> yea
[19:58] <Lunar_Lander> ah military sat
[19:58] <fsphil> cryogenic fuel is cold. there you go
[19:58] <Lunar_Lander> and Thor 7 norwegian comsat
[19:59] <Laurenceb> at least they have a Chef
[19:59] <Lunar_Lander> yeah :D
[19:59] <Lunar_Lander> I actually don't know what they are doing, given that the computer does everything from T-7
[19:59] <fsphil> tetris
[19:59] <Lunar_Lander> XD
[20:00] <Lunar_Lander> there she goes
[20:00] <fsphil> cloud
[20:00] <fsphil> that's pretty quick
[20:01] <Lunar_Lander> XD I actually didn't know that the host would say that
[20:01] <Lunar_Lander> hope we will see SRB sep
[20:01] <fsphil> I really want to see a launch some day
[20:02] <fsphil> 84km altitude, just about twice the ukhas record :)
[20:02] <Lunar_Lander> yeah
[20:02] <Lunar_Lander> dman
[20:02] <Lunar_Lander> damn
[20:02] <Lunar_Lander> why do they have to show the SRB sep clip all the time?
[20:03] <Lunar_Lander> they almost lost the live view of that
[20:03] <fsphil> nice shot
[20:04] <Lunar_Lander> yeah
[20:04] <Lunar_Lander> but all the onboard stuff is old
[20:04] <Lunar_Lander> for some reasons they don't fly cams anymore
[20:04] <fsphil> oh
[20:05] <Lunar_Lander> josh usually says that this is from another launch
[20:05] <fsphil> they need to take a page from spacex's book
[20:05] <Lunar_Lander> :)
[20:05] <fsphil> even low rate video would be neat
[20:05] <Lunar_Lander> true
[20:06] <Lunar_Lander> did you see the onboard cams on the 7th soyuz from kourou?
[20:06] <Lunar_Lander> that was amazing, and never done before
[20:06] <fsphil> don't think I've seen that
[20:06] <Lunar_Lander> ah
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[20:06] <Lunar_Lander> they got it on youtube
[20:07] <Lunar_Lander> https://www.youtube.com/watch?v=rhqclpAa208
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[20:07] <Lunar_Lander> dishes like ears xD
[20:09] <Lunar_Lander> ah she said it that it's a replay
[20:10] <Lunar_Lander> Isaac Newton gets a shoutout
[20:11] <fsphil> well enough of that
[20:11] <Lunar_Lander> yea
[20:11] <Lunar_Lander> I find it interesting that every hall of SSL has the american flag on the wall :)
[20:12] <amell> Lunar_Lander: watching that youtube.
[20:12] <fsphil> you know the americans. they like to put flags everywhere
[20:13] <amell> Lunar_Lander: awesome booster sep at 2:20
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[20:13] <amell> the soyuz booster sep is just beautiful!
[20:14] <Lunar_Lander> I agree :)
[20:14] <Lunar_Lander> "It was a privilege for SSL to build the satellite for Telenor"
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[20:14] <Lunar_Lander> well they paid for it
[20:14] <Lunar_Lander> :D
[20:15] <amell> just commercial mumbo jumbo shite.
[20:15] <fsphil> the boosters seemed to still be firing when they separated them, right back up to the rocket
[20:15] <fsphil> in that youtube clip
[20:16] <Lunar_Lander> yeah
[20:16] <Lunar_Lander> I think the boosters are some sort of hinged at the top
[20:16] <Lunar_Lander> so that petal-type flipping over comes from the lower points detaching and the residual thrust turns them out of the suspensions
[20:16] <Lunar_Lander> or so
[20:17] <amell> excellent russian engineering!
[20:17] <Lunar_Lander> :)
[20:17] <Reb-SM3ULC> nice clip
[20:17] <Lunar_Lander> italian air force looking on
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[20:19] <Lunar_Lander> yea
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[20:20] <Lunar_Lander> fsphil, I just remember, JAXA also shows everything on the H-IIA launches
[20:20] <Lunar_Lander> i.e. live onboard views of SRB sep, etc. up to satellite sep
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[20:20] <SpacenearUS> New vehicle on the map: 03kj4cqq_chase - 12http://tracker.habhub.org/#!qm=All&q=kj4cqq_chase
[20:23] <Lunar_Lander> they showed this on VA220 :) http://s.gullipics.com/image/l/b/a/5yv6w8-lqwzgq-lhzr/vlcsnap2015042622h22m45s96.png
[20:25] <amell> this is nice fireworks https://www.youtube.com/watch?v=z_aHEit-SqA
[20:25] <Lunar_Lander> yeah
[20:25] <Lunar_Lander> someone forgot a wrench if I recall correctly
[20:27] <Vaizki> mmm yes that booster separation...
[20:28] <Lunar_Lander> Thor 7 OK
[20:29] <Vaizki> I love how they say "anomaly"
[20:30] <Vaizki> when the thing just set every forest within 100 miles on fire
[20:31] <Lunar_Lander> yea
[20:31] <Lunar_Lander> Laurenceb, there was that live telemetry room
[20:32] <fsphil> at least she stayed calm
[20:32] <fsphil> doing her job like a pro
[20:32] <Lunar_Lander> yea
[20:33] <amell> the hydrogen bomb test vids on youtube are fun.
[20:35] <Lunar_Lander> done
[20:37] <amell> Hmm, useful information for today - if you keep your house clean and painted white you are more likely to survive a nuclear explosion, https://www.youtube.com/watch?v=pGJcwaUWNZg
[20:38] <amell> I better tidy up outside tomorrow.
[20:39] <fsphil> I've been tidying all week. it's horrible. don't do it
[20:40] <amell> at least you will survive the nuclear explosion...
[20:40] <SpacenearUS> New vehicle on the map: 03ECC1 - 12http://tracker.habhub.org/#!qm=All&q=ECC1
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[20:40] <fsphil> mmm yes. then I can become master of the remains of humanity
[20:41] <fsphil> or something like that
[20:42] <fsphil> is JSKY launched? see some SSDV pics
[20:43] <fsphil> oh up and down already
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[21:30] <chrisstubbs> daveake, is pressure supposed to be in hPa on the PITS with BMP180?
[21:31] Nick change: fl_0 -> fl_0|afk
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[21:37] <Laurenceb> https://www.youtube.com/watch?feature=player_embedded&v=xo8qckXgNNw
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[22:12] <Lunar_Lander> good night :)
[22:13] <DL7AD> gnight Lunar_Lander
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[22:17] <amell> Laurenceb: this guy has superpower eyesight!
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[22:53] <DL7AD> good night
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[23:56] <Rohad> Hi, where are pictures and telemetry data stored on the PITS board?
[00:00] --- Mon Apr 27 2015