highaltitude.log.20150722

[00:05] <fxmulder> not able to read anything from it
[00:05] <fxmulder> this is my first time messing with spi so there's a whole list of things that could be wrong with my setup
[00:06] <fxmulder> it just seems to act strange, even the logic analyzer doesn't pick up all its bits, the pulse width in MISO seems pretty small
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[02:28] <SpacenearUS> New vehicle on the map: 03kd7vlb_chase - 12http://tracker.habhub.org/#!qm=All&q=kd7vlb_chase
[02:35] <SpacenearUS> New position from 03N8CALL-11 after 032 days silence - 12http://tracker.habhub.org/#!qm=All&q=N8CALL-11
[02:44] <SpacenearUS> New vehicle on the map: 03#car1_chase - 12http://tracker.habhub.org/#!qm=All&q=%23car1_chase
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[05:27] <SpacenearUS> New vehicle on the map: 03TT7-40 - 12http://tracker.habhub.org/#!qm=All&q=TT7-40
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[06:46] <SpacenearUS> New vehicle on the map: 03MOD2 - 12http://tracker.habhub.org/#!qm=All&q=MOD2
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[08:10] <SpacenearUS> New vehicle on the map: 03BLUESKYE - 12http://tracker.habhub.org/#!qm=All&q=BLUESKYE
[08:11] <chimpusmaximus> Upu: is the your store down?
[08:15] <daveake> He tweeted earlier that it is due to a server update
[08:15] <chimpusmaximus> ok cheers
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[08:39] <garymortimer> morning from a rainy cold South Africa
[08:48] <SM0ULC> morrn
[08:48] <SM0ULC> rainy and "cold" (19C) Sweden
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[08:50] <Geoff-G8DHE> Mixed Sun and Cloud UK
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[08:51] <garymortimer> bluesky is on UKhab ish time I see
[08:52] <Geoff-G8DHE> Indeed set up wating at present trying to find details to run a prediction
[08:52] <Geoff-G8DHE> Ah ha "800g Hwoyee balloon with a 1kg payload"
[08:56] <Geoff-G8DHE> lets predict on the standard 5/30/5 then
[08:56] <Geoff-G8DHE> http://predict.habhub.org/#!/uuid=c90ad67862e838d9db00faa5ee0cf3a913c246be
[09:01] <garymortimer> This looks like a fair venue to wait in http://www.ostrichcastleacre.com/
[09:02] <garymortimer> In fact that village looks like an excellent HQ http://www.castleacre.info/pubs.htm
[09:07] <FuzzyLemon> hi everyone we are about to launch!
[09:08] <FuzzyLemon> telemetry is working fine and balloon is filled
[09:08] <FuzzyLemon> any help tracking would be muchos appreciated!
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[09:14] <Geoff-G8DHE> Listening for you
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[09:14] <PE2BZ> Bluesky is rising ?
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[09:15] <Geoff-G8DHE> sure is http://360.g8dhe.net/HAB_Flights/2015_Flights/BLUESKYE_20150722/
[09:16] Last message repeated 1 time(s).
[09:16] <FuzzyLemon> its up!
[09:16] <dbrooke> got it
[09:17] Nick change: dbrooke -> db_G6GZH
[09:17] <chimpusmaximus> !dial blueskye
[09:17] <SpacenearUS> 03chimpusmaximus: Latest dials for 03LOOM TO THE MOON 10(6514): 03434.50014 MHz, 434.5001 MHz
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[09:26] <db_G6GZH> first test of my new remote-controllable receiving setup, albeit only from the other end of the desk at the moment
[09:28] <Geoff-G8DHE> what is the setup db_G6GZH ?
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[09:30] <PE2BZ> Bluesky´s signal is above noise level in JO21CX
[09:31] <db_G6GZH> still using the IC-R7000 receiver but running dl-fldigi on an Odroid C1 with USB soundcard and USB serial for CAT and VNC for remote access
[09:31] <db_G6GZH> also has a mains relay to turn the Rx on as needed via GPIO
[09:31] <PE2BZ> !payload bluesky
[09:31] <SpacenearUS> 03PE2BZ: Can't find a flight doc matching your query
[09:32] <PE2BZ> !payload 6514
[09:32] <SpacenearUS> 03PE2BZ: Payload 03LOOM TO THE MOON 10(6514) 03$$BLUESKYE - 03Usual - 03434.5 MHz USB 03RTTY 50/500Hz ASCII-7 none 2
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[09:44] <SpacenearUS> New vehicle on the map: 03LORA1 - 12http://tracker.habhub.org/#!qm=All&q=LORA1
[09:48] <Geoff-G8DHE> Let it go up a bit daveake, I'll never hear it at ground level ;-)
[09:48] <daveake> Patience :)
[09:49] <Geoff-G8DHE> I'm no grasshopper!
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[09:51] <Geoff-G8DHE> Oop BlueSkye due north of me ... waits for aerial to spin 360!
[09:52] <daveake> That's going to be BLUESEA if it doesn't get a move on
[09:52] <PE2BZ> Bluesky looks well isolated to me. Very stable on frequency !
[09:53] <Geoff-G8DHE> It is just a little wobble everynow and then but nothong serious.
[09:54] <PE2BZ> Anyone in the UK with interest in radiosondes (meteo / dropsondes) online here ?
[09:54] <Geoff-G8DHE> I listen for them occasionally now
[09:56] <PE2BZ> The company FAAM seems to be flying the MET1 today between 08 Z and 13 Z and the flightplan states that there will be sonde drops between surface and FL350
[09:56] <PE2BZ> They dropped RD94´s in March and April for the coast of Uk and Scotland
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[09:56] <Geoff-G8DHE> Oh right, what flight path roughly ?
[09:57] <PE2BZ> It´s online, at http://www.faam.ac.uk/gluxe-notams/route-plan.pdf
[09:57] <PE2BZ> I am curious if there is an AM frequency they would use to ask permission before they drop them.
[09:58] <Geoff-G8DHE> No idea ..
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[10:01] <garymortimer> I'm coming to the party late had to do some work, I should think they would be talking to London Mil out there
[10:02] <garymortimer> LONDON MIL WEST ICF 134.300
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[10:03] <PE2BZ> garymortimer thanks, I´ll give it a try. Have to fire up another SDR for that. The Icom is tracking Bluesky, the SDRPlay is recording 6 MHz in the radiosonde band...
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[10:08] <chimpusmaximus> !dial blueskye
[10:08] <SpacenearUS> 03chimpusmaximus: Latest dials for 03LOOM TO THE MOON 10(6514): 03434.501125 MHz, 434.501 MHz, 434.50064 MHz, 434.50329 MHz, 434.50091 MHz, 434.5001 MHz, 434.50334 MHz, 434.50065 MHz, 434.50338 MHz
[10:09] <PE2G> The NOTAM it says that sondes will NOT be dropped.
[10:09] <PE2G> H3391/15 - MET RESEARCH FLT. BAE146 ACFT CALLSIGN METMAN OPR WI AREAS ALPHA AND DELTA (SEE UK AIP). ACFT MAY NOT BE ABLE TO FLY SEMI-CIRCULAR FL. ACTIVITY MAINLY UNDER SWANWICK (MIL) CTL. SONDES WILL NOT BE DROPPED. ALL OPS SUBJ PRIOR ATC CLR. RTE AVBL FM 0600HR ON DAY OF FLT AT WWW.FAAM.AC.UK. 15-07-0784/AS2. SFC - FL350, 22 JUL 08:00 2015 UNTIL 22 JUL 16:00 2015. CREATED: 21 JUL 12:33 2015
[10:10] <PE2BZ> PE2G Thanks Frits.
[10:10] <PE2G> I just came across the NOTAM
[10:11] <garymortimer> Ha theres me showing my age I forgot about Swanwick!
[10:12] <Geoff-G8DHE> Humm http://www.wired.com/2015/07/hackers-remotely-kill-jeep-highway/
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[10:14] <PE2BZ> garymortimer no worry ;-) Does Swanwick only use UHF frequencies ?
[10:14] <garymortimer> I would have to ask some chums that work there I left the RAF more than 20 years ago ;-)
[10:16] <PE2BZ> Nevermind, next flight probably goes a complete different way
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[10:25] <PE2G> Today's tracks from MET1: http://www.flightradar24.com/data/airplanes/g-luxe/#6e118e4
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[10:31] <PE2BZ> away for lunch now. CU later
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[10:37] <Geoff-G8DHE> Prediction is a bit out today! http://360.g8dhe.net/HAB_Flights/2015_Flights/BLUESKYE_20150722/index.php?ind=4
[10:47] <daveake> I think it's just the ascent rate being ~4m/s not 5
[10:49] <Geoff-G8DHE> Seems the ascent rate dropped after a while http://360.g8dhe.net/HAB_Flights/2015_Flights/BLUESKYE_20150722/BlueSkye_201507221048.jpg
[10:51] <daveake> Depending on the burst, that's going almost over Sculthorpe
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[11:01] <LunarWork> hello
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[11:05] <garymortimer> http://www.thehunnybell.co.uk/ not far
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[11:18] <garymortimer> Read reviews, Hunnybell not so much
[11:18] <daveake> Likely to pop about now given the balloon size and payload weight
[11:19] <mattbrejza> oh, is this the 'merica pico payload?
[11:20] <mattbrejza> nope ignore me
[11:20] <daveake> :)
[11:20] <mattbrejza> such driving though
[11:20] <daveake> yep
[11:20] <craag> Given their record of parachute performance I dont think there's much chance of a wet landing
[11:21] <daveake> and if that flight I helped with last week is an indication, it'll be 3G-less
[11:21] <daveake> hah
[11:21] Action: daveake looks along flightpath
[11:21] <daveake> hmmmm
[11:21] <garymortimer> about same area
[11:22] <mattbrejza> so this is a pi payload, no ssdv?
[11:22] <mattbrejza> not using the pits software?
[11:22] <daveake> yes
[11:22] <daveake> dunno; doubt it
[11:23] <Geoff-G8DHE> Burst .....
[11:23] <daveake> that's very very close to that MoD air base
[11:24] <daveake> an d if their chute works as well as usual ...
[11:25] <garymortimer> getting closer ;-)
[11:26] <db_G6GZH> burst was pretty much at closest approach to me
[11:26] <garymortimer> https://en.wikipedia.org/wiki/RAF_Sculthorpe
[11:27] <daveake> "there are up to 2000 cows on the grass areas"
[11:27] <UpuWork> yes chimpusmaximus its back now
[11:30] <db_G6GZH> seems to be not much of an airfield any more
[11:30] <daveake> yes, good
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[11:33] <garymortimer> Best wait at the crown http://www.crowninnnorfolk.co.uk/
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[11:39] <chimpusmaximus> UpuWork: Thanks, wife home so no longer safe lol
[11:39] <UpuWork> lol
[11:40] <daveake> Nevis Safe For Wife ?
[11:41] <chimpusmaximus> Don't want to get caught looking at more bits after i got caught telling someone how much gear i lost the week before
[11:43] <LunarWork> :D
[11:44] <chimpusmaximus> Lucky when she is at work my parcels come...
[11:45] <garymortimer> Ah the dreaded delivery of toys and finding of excuses
[11:45] <chimpusmaximus> In her defence she is very allowing... but only wise to push it so far
[11:46] <garymortimer> http://www.thedabblingduck.co.uk/
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[11:49] <garymortimer> bob on for the dabbling duck, it should come as no suprise that its by those ponds
[11:51] <mattbrejza> oh its found another RAF site lol
[11:52] <mattbrejza> (ex-)
[11:52] <daveake> http://ukga.com/airfield/great-massingham
[11:52] <daveake> "Landing Fee: single £8, twin £12"
[11:53] <mattbrejza> "HAB: 70p"
[11:53] <daveake> lol
[11:53] <garymortimer> points lost for missing the pub, hard not to find ex RAF airfields around there.
[11:53] <M0SCJ> LOL daveake!
[11:54] <SpacenearUS> New vehicle on the map: 03griffen's chariot_chase - 12http://tracker.habhub.org/#!qm=All&q=griffen's%20chariot_chase
[11:55] <deebs67> $$$$$BLUESKYE,830,11:52:14,52.7758X.651243,778,10,5,2675,08*8AF
[11:55] <garymortimer> blimey they were a long way away
[11:57] <SpacenearUS> New position from 03K6RPT-12 after 0312 hours silence - 12http://tracker.habhub.org/#!qm=All&q=K6RPT-12
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[12:47] <arjunnaha> How can you attach the GoPro to the payload box?
[12:47] <adamgreig> friction is a popular choice
[12:47] <adamgreig> duct tape and cable ties perhaps second place
[12:49] <arjunnaha> And then use the app or something to start it?
[12:49] <arjunnaha> Considering the short battery life
[12:49] <adamgreig> sure, yea
[12:49] <adamgreig> sometimes I just press the button
[12:49] Nick change: fl_0 -> fl_0|afk
[12:50] <arjunnaha> good choice
[12:50] <craag> I'd suggest avoiding using hte wifi
[12:50] <craag> it adds to battery drain, and is IMO the most buggy bit
[12:50] <adamgreig> it is good for checking your view though
[12:50] <craag> yep
[12:50] <craag> then turn it off :)
[12:51] <arjunnaha> Do you use external batteries for flights? I somehwere read that you should prepare for 3-4 hours...
[12:54] <SpeedEvil> Do actually have a checklist.
[12:54] <SpeedEvil> There are suggestions on the wiki.
[12:54] <SpeedEvil> 'press the button and check it's actually recording' should be on there
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[12:54] <SpeedEvil> As people forgetting has happened
[12:55] <gonzo_> and that the SD cards are fresh and plenty of space
[12:55] <adamgreig> and the batteries
[12:55] <SpeedEvil> And tying the balloon to the payload
[12:56] <mattbrejza> and not tying the parachute upside down
[12:56] <mattbrejza> and remembering to attach the backup tracker
[12:56] <gonzo_> but the most common failute is, not making sure yoiu have GPS lock and telemetry decode at a reasonable distance from the payload, before launch
[12:57] <gonzo_> I assumes chutes would be self righting!
[12:57] <adamgreig> not if you tie them upside down!
[12:58] <adamgreig> most HAB chutes have connection points at top and bottom
[12:58] <adamgreig> bottom goes to payload, top to balloon
[12:58] <adamgreig> if you get that wrong...
[12:58] <gonzo_> ah, ok, centre connected at the top
[12:58] <LunarWork> be back later
[12:58] <adamgreig> if you only attach at the bottom of the chute it's less of an issue
[12:58] <adamgreig> (it's not an issue at all in fact)
[12:59] <gonzo_> I've only ever had the chute on a separate line, hanging free
[12:59] <adamgreig> that works, but you get more drag on the way up
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[12:59] <adamgreig> and more rigging to do
[12:59] <gonzo_> true, never really considered that
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[13:00] <arjunnaha> SpeedEvil: I do, I'm just asking if the stock camera time for a GoPro (Hero+ Black) is enough...
[13:01] <mattbrejza> i think the answer is generally dont count on it
[13:02] <SpeedEvil> You can get less flight time by simply winding up the amount of helium
[13:02] <SpeedEvil> It goes up faster, bursts faster, and does not go as far
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[13:02] <arjunnaha> nah, I want to get decent pics
[13:02] <SpeedEvil> Your pics may not differ appreciably with the length of flight
[13:03] <mattbrejza> well for starters what is the stated battery life and what is the expected flight time
[13:03] <SpeedEvil> You just have 16000 (or whatever) not 8000
[13:03] <mattbrejza> and then remember that battery life reduces with temperture (although if anything the heat of the camera will keep it pretty warm)
[13:04] <SpeedEvil> Of course, the longer the flight, the further it goes, and the more chance you won't recover it
[13:05] <arjunnaha> What height should I be aiming for, for good pics and (relatively) easy recovery
[13:05] <adamgreig> 24km
[13:05] <adamgreig> good pics, cheap balloon, easy recovery
[13:06] <mattbrejza> well depending on the winds going another 10km might not end up with the balloon travelling futher
[13:06] <adamgreig> true but will require a more expensive balloon
[13:06] <adamgreig> admittedly depending on the winds going higher might make recovery easiest but I'd say mostly not
[13:06] <mattbrejza> we got to 30km with a 300g balloon iirc
[13:07] <adamgreig> lol
[13:07] <adamgreig> with a gopro?
[13:07] <mattbrejza> 808 + canon
[13:08] <adamgreig> nice
[13:08] <gonzo_> also winds and launch site and proximity to the sea may be a factor
[13:09] <mattbrejza> oh 500g not 300g, still was the small cylinder of He
[13:09] <mattbrejza> (1.8m3)
[13:20] <infaddict> Well Blueskye is the nearest airport landing I've seen ;-)
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[14:45] <Lunar_Lander> hello
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[14:53] <SpacenearUS> New vehicle on the map: 03KE7IGH-13 - 12http://tracker.habhub.org/#!qm=All&q=KE7IGH-13
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[16:10] <SpacenearUS> New vehicle on the map: 03AIRCOR-1 - 12http://tracker.habhub.org/#!qm=All&q=AIRCOR-1
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[16:43] <NormanOK> hello everyone, I am having some problems with my payload. I would appreciate any help to figure out what is wrong with my setup.
[16:43] <mbales__> go on
[16:43] <NormanOK> here is some pictures and and a wav file: https://drive.google.com/folderview?id=0B5ydh6oJTtw5flh3ZXlWczYxeUx3M3ZDOW44dElxMHN3a3JOQTFWOTdjbFNFYWk3Z2lIWms&usp=drive_web
[16:43] <Geoff-G8DHE-M> can you post a screengrab of dl-fdigi and anyother software sdr# etc ?
[16:44] <NormanOK> yes, there are a couple of screenshots and a wav file in that link.
[16:44] <Geoff-G8DHE-M> You have Squelch turned on - needs tirunging off
[16:45] <mattbrejza> well on payload.jpg you seen to have several wires loose
[16:45] <mbales__> that is certainly a unique payload
[16:45] <NormanOK> yes, I was trying to power it from another source.
[16:45] <mattbrejza> baudrate 56?
[16:45] <NormanOK> before everything was powered over arduino's regulator.
[16:46] <mattbrejza> also any reason for the gps antenna not being straight?
[16:46] <NormanOK> no 50. I don't why the setup window shows that, but at the bottom you can see that it is set to 50
[16:46] <Geoff-G8DHE-M> seems to have a lot of drift and chirp on the signal as well
[16:46] <mattbrejza> werid
[16:47] <NormanOK> straight did not work very well, then I read that the gps is signal is polarized, so I tried to make a helix :)
[16:47] <daveake> That drift is the transmitter heating up ... how much power is it set to ?
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[16:47] <NormanOK> some of it is my rtl-sdr, just warming up. but yes there is still some drift.
[16:49] <NormanOK> for the rtty to work, is it enough for each part of signal to be within those horizontal red lines?
[16:49] <Geoff-G8DHE-M> yes its not critical on the width with such a strong signal but the spacing is a a trifle more sensitive
[16:50] <Geoff-G8DHE-M> but nothing seems awry there
[16:50] <Geoff-G8DHE-M> do you have any other filters/noise blankers or signal conditioning turned on in gqrx ?
[16:50] <NormanOK> I think I tried it without squelch, did not seem to make a big difference. I can't try it again now, because I am at work but I'll try it later. Is the first bit usually missed with squelch?
[16:51] <NormanOK> bu then at least the rest of the bits should be detected properly, no?
[16:51] <Geoff-G8DHE-M> no it will either work or not with squelch just acase of minimisning problems!
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[16:52] <Geoff-G8DHE-M> wasn't there are problem with themore recent copies of fldigi and RTTY ? Have you tried the dl-fldigi version ?
[16:52] <NormanOK> ok, I see. I'll do more test without squelch. could you guys see if you can decode the wav file?
[16:52] <NormanOK> I wasn't able to install it on my ubuntu because of dependencies.
[16:54] <NormanOK> the message is supposed to be "$$$ 0123456789 ABCDEFGHIJKLMNOPQRSTUVWXYZ -+()* $$$"
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[17:00] <NormanOK> mbales__: in a good or in a bad way? :)
[17:01] <mbales__> in a im super excited lets test it right now! kind of way
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[17:02] <NormanOK> haha yes kind of, although I've been working on it for a while now, but I am still pretty excited.
[17:02] <mbales__> very cool
[17:02] <mbales__> ill show you my current project: tracksoar.com
[17:03] <mbales__> its almost a year in the works now
[17:04] <NormanOK> looks great. I'm hoping to design my own circuit too. learning how to use eagle now. but that's gonna take some time I guess.
[17:05] <mbales__> yeah its a little up hill, but very doable
[17:06] <NormanOK> what do you use as transmitter?
[17:06] Nick change: fl_0|afk -> fl_0
[17:06] <mbales__> radiometrix hx1
[17:06] <mbales__> but there are pin compatible versions for a lot of frequencies
[17:08] <NormanOK> I see. I'm hoping to put everything together on a single pcb with si4464 doing the rf work.
[17:09] <NormanOK> I have more questions :)
[17:11] <mbales__> go right ahead
[17:11] <NormanOK> my radio is supposed to go up to 20 dbm, but doesn't work above 11 dbm. it just transmits couple of bits and stops. I was thinking it was a current issue and tried it again with a different power supply but that did not work either. is it possible that I need more than a simple piece of wire as my antenna?
[17:12] <mbales__> is your wire trimmed roughly to the correct legnth for a harmonic of the wavelength?
[17:13] <NormanOK> quarter wavelength and no ground plate. well I guess there is the ground plate of the gps receiver which probably acts as a ground plate for the radio too.
[17:14] <NormanOK> which is confusing if that's right :)
[17:14] <mbales__> hmmm
[17:14] <mbales__> do you have a way to see the current being drawn?
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[17:16] <NormanOK> yes I checked the current, it was about 35 mA for 11 dbm and goes up with higher tx power settings or at least initially, then stops transmitting or transmits at a much lower power.
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[17:17] <mbales_> silly irc client crashing
[17:18] <mbales_> NormanOK not sure if you responded
[17:19] <NormanOK> yes I checked the current, it was about 35 mA for 11 dbm and goes up with higher tx power settings or at least initially, then stops transmitting or transmits at a much lower power.
[17:19] <NormanOK> I guess i replied before your irc client crashed.
[17:29] <mbales_> ah ok
[17:30] <mbales_> and which module are you using again?
[17:30] <NormanOK> I also have some questions on balloons. I did some back of the envelope calculation and estimated the floating altitude in terms of r = (payload weight) / (maximum balloon lift). so for r = 0.5 I got, 4-6 km and r = 0.1, 11-15 km. would you agree with those numbers?
[17:31] <NormanOK> it's a cheap module based on si4432. here is the ebay link: http://www.ebay.com/itm/SI4432-470MHz-1000m-Wireless-Communication-Module-470M-433mhz-/181351297487?pt=LH_DefaultDomain_0&hash=item2a396131cf
[17:37] <mbales_> for predicting just about everyhting i really like this site: http://astra-planner.soton.ac.uk/
[17:37] <mbales_> takes balloon size and weight into account as well as payload
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[17:39] <mbales_> im looking over the datasheet for that module, well see if i find anything useful
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[17:40] <NormanOK> thank you very much!
[17:41] <mbales_> what voltage are you running everything on?
[17:41] <NormanOK> 3.3V
[17:43] <mbales_> that ll looks good, what are you using to power it?
[17:45] <NormanOK> I was using arduino pro mini's regulator and a 200 mAh lipo battery.
[17:46] <NormanOK> I don't use gps and radio simultaneously, so I think 150 mA supplied by that regulator should be enough to power everything.
[17:47] <mbales_> i wonder if there is a quick pulse when it starts transmitting and that puts it into a reset state
[17:48] <mbales_> do you have access to an oscope to check that?
[17:48] <NormanOK> hmm maybe, but I also tried to power it directly from two AA batteries and that did not seem to make a difference.
[17:49] <mbales_> maybe try that with a decoupling cap and see if that helps, maybe theres a decent sized ripple
[17:49] <NormanOK> no oscilloscope unfortunately :(
[17:49] <mbales_> sad face indeed
[17:51] <NormanOK> OK, good idea, I'll try that in the evening. one last question! could you try to see if you can decode my rtty recording?
[17:51] <mbales_> can you send the link again?
[17:51] <NormanOK> here is the link: https://drive.google.com/folderview?id=0B5ydh6oJTtw5flh3ZXlWczYxeUx3M3ZDOW44dElxMHN3a3JOQTFWOTdjbFNFYWk3Z2lIWms&usp=drive_web
[17:52] <mbales_> what modulation are you using?
[17:52] <mbales_> sorry ignore that
[17:53] <NormanOK> it is supposed to be 50 baud, 290 hz, ascii-7, two stop bits no parity bit.
[17:53] <mbales_> roger
[17:54] <NormanOK> and the message is supposed to be "$$$ 0123456789 ABCDEFGHIJKLMNOPQRSTUVWXYZ -+()* $$$"
[17:57] <mbales_> doesnt look like i have a way of decoding it here at work
[17:58] <mbales_> oh wait, let me try with my phone
[17:59] <NormanOK> ok, maybe another time. I'll see if I can catch you online later today. thank you for all the help!
[17:59] <NormanOK> oh ok :)
[18:00] <NormanOK> which app do you use?
[18:02] <mbales_> droid rtty
[18:03] <mbales_> though it doesnt support the exact specs you listed
[18:03] <mbales_> :?
[18:03] <mbales_> :/
[18:03] <NormanOK> ok I see. I gotta go now, I really appreciate your help!
[18:03] <mbales_> doesnt spit out anythign close to what youre sending
[18:03] <mbales_> no worries, good luck
[18:04] <NormanOK> thank you!
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[18:18] <dbrooke> NormanOK: I just tried decoding your wav and it only gets some of the characters e.g "FHIJKLMO Q"S$UWXYZ -(*$$P135789 BD"
[18:20] <dbrooke> it's repeatably very similar, so I suspect you have a problem on the Tx side, possibly a timing error?
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[18:44] <day> if i try to load a .wav file into dl-fldigi i get a 'channel != 1' what exactly does that mean?
[18:45] <day> 'channels != 1' to be precise
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[18:46] <mattbrejza> it probably wants a mono .wav file
[18:46] <day> ah
[18:46] <mattbrejza> try playing the wav with vlc or whatever and loop it back into fldigi
[18:48] <day> that was it
[18:59] <chimpusmaximus> I'm currently working on a controlable trigger for both focus and shutter on a sony RX100 MkII. I have found that its possible to get an aftermarket cable that outputs the shutter and focus to a 2.5mm stereo male pin.
[19:00] <chimpusmaximus> If i then ground each of the connections i can control the shutter and focus. I was thinking to use two Optocouplers to allow me to pull a pin high on say an arduino and then control the focus and shutter timeings.
[19:00] <chimpusmaximus> Does this sound sensible?
[19:01] <ike> how do you controll focus with only one pin?
[19:02] <chimpusmaximus> It just forces auto focus to kick in.
[19:03] <ike> then can you hold it to GND all the time?
[19:07] <chimpusmaximus> for focus i dont think it liked it when i tried. Been a while sinc ei tested but i think i had to pull focus high for about 1.5 seconds and then trigger the shutter.
[19:07] <chimpusmaximus> As far as shutter i wanted some control over how often and at what altitude it took photos.
[19:08] <chimpusmaximus> A 9g servo was another option.
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[19:11] <day> any idea what kind of protocol this signal uses? http://i.imgur.com/qNGMHBO.png
[19:13] <day> to me it looks like, it either is pretty fancy. or the transmitter pretty bad
[19:14] <NormanOK> dbrooke: OK, thank you very much! I've been using a sample code I found online. it runs delayMicroseconds(10000); delayMicroseconds(10150); for 50 baud. I am not sure why it does more than 20 ms delay, but I was assuming that it's a well tested code. Or maybe there is some other things causing a timing error.
[19:30] <dbrooke> I'd have expected that a delay would need to be less than 20ms, to allow for the execution time of the code between the calls to delay, whereas that seems to delay for longer.
[19:31] <Oddstr13> day: center it on 869.1815, and make a recording in am mode?
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[19:34] <day> Oddstr13: why did you pick that specific freq.?
[19:34] <day> and why AM mode?
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[19:35] <Oddstr13> day: that particular freq looks like the center to me
[19:36] <Oddstr13> and am makes the clearest signal if it's a ook signal
[19:36] <Oddstr13> day: btw, would be practical to enable the timestamping of the waterfall
[19:37] <Oddstr13> so one gets a sense of time scale with screenshots like those
[19:39] <day> makes sense. but i think the center should be here: http://i.imgur.com/ZISwNXz.jpg
[19:40] <day> i think the fragments in the higher freq. bands arent supposed to be there
[19:41] <NormanOK> dbrooke: you're right, that delay corresponds to 49.6 baud assuming no time is lost running the actual tx code. I'll try to play around with the timing to see if that helps. thank you for your help!
[19:42] <Oddstr13> day: you might want to turn gain down some
[19:43] <Oddstr13> ..hmm, wonder where I put my rtl-sdr
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[19:43] <dbrooke> NormanOK: I've not tried it myself, but others on here have suggested looking at the audio in audacity to measure the timing
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[19:46] <FuzzyLemon> thanks to anyone who helped track blueskye today! successfully recovered from a place called great massingham
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[19:47] <NormanOK> dbrooke: great idea, I guess I can also fine tune the timing that way.
[19:51] <dbrooke> hopefully, dl-fldigi is not very tolerant to timing error so you're probably not too far off anyway
[19:53] <day> Oddstr13: is it possible to increase the resolution of the waterfall so far that i can look into the packages?
[19:53] <Ian_> NormanOK no one seems yet to have commented about fldig3.png but here are my observations and recommendations:
[19:54] <Oddstr13> day: probably not
[19:54] <day> because those 3data blobs. 3x the same
[19:54] <Oddstr13> can I have an AM recording of a burst of three?
[19:54] <day> the raw one sounds much cleaner
[19:55] <day> but yeah sure
[19:56] <Ian_> Why baud rate of 56 Baud and not 50? Parity even, should be parity NONE. which might be very significant. Normally 8 bit ASCII and 1 stop bit or 7 bit ASCII and 2 stop bit..
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[19:57] <Ian_> The difference in length and stop bits is probably mute. You might need 8 bit if using ssdv but normally straight telemetery needs only 7 bits.
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[19:58] <Ian_> Shaped TX probably is of no concern and Unshift On Space is a Baudot type TTY feature of some US Mokrum or Teletype Corp Machines. not used in the UK at all (historical note)
[19:58] <NormanOK> Ian_: I don't know why fldigi was showing those settings but below it says 50 baud for example. sometimes when I try to go back and change the settings it shows me the default ones.
[19:59] <Ian_> Hope some of tha might help
[20:00] <NormanOK> ok I see, I didn't know what those were, I was playing around to see if any one them would help.
[20:00] <day> Oddstr13: http://en.file-upload.net/download-10785885/SDRSharp_20150722_195708Z_869181kHz_AF.wav.html
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[20:00] <Ian_> I can only make the observations NormanOK. I'm surprised that no one picked up on the parity issue, particularly when you were getting some apparent correct characters but not others - parity issue.
[20:00] <day> Oddstr13: how do you figure out which protocol is being used? i guess each protocol has a distinctive sound?
[20:01] <Oddstr13> day: my AV actually blocked that download for some reason
[20:01] <Ian_> I think that parity was a rarely used TTY feature and certainly a PITA when companies implemented it to talk to their particular devices.
[20:01] <day> its a wav file o0
[20:02] <day> Oddstr13: want me to upload it somewhere else?
[20:03] <Oddstr13> dropbox usually works fine
[20:03] <Ian_> What protocol How to detect? 50 Baud sounds like 50 Baud. 7 Bit the Rx is ready to go after bit 7 (the tx supplies the async stop bits to allow the rx to be ready for the next character if there are minor timing probs due to propagation, line delay etc).
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[20:04] <Ian_> 8 Bit then the rx is forced to wait that extra bit and so if 8 Bit isn't being transmitted, then it's actually encroaching on the allowed headroom for the rx.
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[20:05] <Ian_> Parity: almost never used. Certainly not by anyone sane or in the HAB community.
[20:05] <Ian_> Have I missed anything?
[20:05] <Ian_> Communications brain dump in progress . . . :)
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[20:05] <Oddstr13> 8N1 is the defacto standard I think
[20:06] <Oddstr13> possibly 8N2
[20:06] <NormanOK> ok I see, maybe I was not able to set all the options right. I'll double check everything. Is there a guide on how to install dl-fldigi on ubuntu? apt-get install dl-fldigi complains that libxmlrpc-c++4 is not installable.
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[20:07] <day> oh. its not a hab signal. im just playing around trying to understand how to approach the whole radio thing
[20:07] <Ian_> I would have thought 8N1 or 7N2. Unless needing to tx binary then I would go for 7N2 but then I'm a biased ex-teleg
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[20:08] <Ian_> For general use then 8N1 will maybe keep your options open.
[20:08] <Ian_> Can't help you with dl-fldigi I'm afraid.
[20:08] <day> and how do i figure out if its ook/fsk/.....
[20:11] <Ian_> With your ears I guess. Oh in RTTY.wav if you are generating that signal I would start with a short holding mark before actually starting the character transmission. That way the receiver gets a chance to settle and the rx to be ready for the start of a new character,
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[20:12] <Ian_> If the rx receives noise and is half way through a character when the tx starts, you tell me how long it might take for the rx to be able to resync correctly with a worst case data pattern and only one stop bit? Hmmmm
[20:12] <day> https://www.dropbox.com/s/oxggitjgkbbfb3f/test2.wav?dl=0
[20:12] <day> Oddstr13: ^ give t hat one a try
[20:14] <Ian_> I'm only using my eyes on the Audacity output waveform and my ears. PS can't see that one as I don't have my dropbox login details to hand . . . sorry
[20:14] <day> Ian_: are you using the one i posted previously?
[20:14] <day> because they are the same
[20:16] <Ian_> I was looking at the one supplied by NormanOK but will look at your download-10785885 now
[20:16] <day> ah ok. didnt see that someone else posted a file as well :)
[20:16] <NormanOK> Ian_: how many $'s is often used for that? I was using 3 of them.
[20:17] <day> i would guess mine has roughly a baudrate of 150
[20:17] <day> and i think the freq. is changing :/
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[20:19] <Ian_> Normally two are needed, but often there are three or four transmitted with all but the last two having throw away status. checksum parsing software on the tx side should throw away the right number to be able to work OK
[20:19] <fox123> hallo all, please how frequency and mode 0x08
[20:20] <Upu> !dial 0x08
[20:20] <SpacenearUS> 03Upu: Can't find a flight doc matching your query
[20:21] <fox123> TNX 73
[20:21] <lz1dev> .flights
[20:21] <SpacenearUS> 03lz1dev: Current flights: 03TT7-40 10(e02c), 03BLUE SKYE 10(6514), 03144.7MHz RTTY100bd/450/7n2 10(0f06)
[20:21] <Upu> hasn't been heard from in 23 hours fox123
[20:22] <Ian_> day - your signal is obviously OOK from the waveform noise and then quietening with clicks. from data? You would do better to use FSK, but with OOK you will find that an AM mode will give you better reception than trying to get sense with SSB. Something that actually isn't intuitive to me.
[20:24] <day> Ian_: did you look at it in audacity/
[20:24] <Ian_> Yes
[20:24] <day> is each of those spikes just a single bit?
[20:24] <day> because it sounds like many more
[20:24] <Ian_> Pass, each of those bits is a transition from one state to the other
[20:24] <Ian_> I would say
[20:25] <Ian_> did say
[20:25] <Ian_> do say
[20:25] <day> that means there are only 5bits in each package?
[20:25] <Ian_> We all say together - I feel a song coming on!
[20:27] <dl3yc> Upu: 0x08 bursts this morning
[20:27] <dl3yc> http://www.loetlabor-jena.de/utlm/
[20:28] <Upu> ah shame
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[20:29] <Oddstr13> day: that's a 404 actually
[20:30] <day> Oddstr13: https://www.dropbox.com/s/oxggitjgkbbfb3f/test2.wav?dl=0
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[20:32] <Ian_> day - Beyond me to be able to say, but in the apparent quieting there is data. What the blips "possibly" mean is that the data patterns allowed a larger excursion in the perceptual waveform received.
[20:33] <day> Ian_: yeah thats what i think as well. theres a lot of beeping in the quiet areas
[20:33] <Ian_> OOk is probably OK for very local stuff, but pushing it a bit for HAB I suspect.
[20:33] <day> Ian_: its not hab related. its just a wireless push button!
[20:33] <Ian_> Where are you day UK or US?
[20:33] <Oddstr13> day: definitly not am :P
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[20:34] <day> lemme upload the raw capture
[20:34] <day> that sounds MUCH better
[20:34] <day> https://www.dropbox.com/s/k7xk01nzkmkb29b/test.wav?dl=0
[20:34] <day> its a day and night difference
[20:35] <Ian_> Are you using small Chinese tx rx modules (for garage openers and door bells - Arduino hacking etc)?
[20:35] <Ian_> No speakie dropbox
[20:35] <day> yeah
[20:35] <day> sec
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[20:36] <day> http://en.file-upload.net/download-10786056/test.wav.html
[20:38] <Ian_> Yo, bit faster than 50 Baud, but sounds more like data
[20:39] <day> yes. my guess is 150baud
[20:39] <day> but i have no reference
[20:41] <Ian_> Your reference is the txr. What is producing the signal?
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[20:44] <day> just an unknown push button. something i found lying around. could be part of a toy for all i know
[20:45] <Ian_> Ah, the afore said wireless push button - I was thinking that was YOUR application, but obviously now you are listening to the output, which may or may not be ASCII of course. it might be proprietry coding
[20:45] <day> nono
[20:45] <day> looking at the signal im pretty sure its sending 3x the same package
[20:46] <day> each of the packages is fragmented into 6 packages of 35ms seperated by 16ms
[20:46] <Ian_> Should be possible to cut and paste in Audacity and overlay one with the other (almost) to confirm the sameness of the packets. Is there anything in the switch that might suggest /
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[20:47] <Ian_> that it can be set, factory or otherwise, to a particular identity - jumper blobs etc?
[20:47] <day> Ian_: yeah that would be nice. but im not sure how i could do that
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[20:48] <Ian_> Nor do I. I haven't used Audacity seriously for about ten years
[20:48] <Ian_> When it was a baby!
[20:49] <day> nah they are not the same
[20:50] <Ian_> I think the first block shows the rx agc still sorting itself out
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[20:52] <day> Ian_: data aside, what type of modulation is that?
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[20:52] <Ian_> What are you using to receive it?
[20:53] <day> sdr# + dvb-t dongle
[20:53] <Ian_> OK. what mode?
[20:53] <day> the last good sounding one was RAW
[20:53] <day> the ugly one AM
[20:54] <Ian_> RAW, ??? not sure what that actually means (radio trained) :) Looking and thinking AS1
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[20:56] <Ian_> Hmmmm. haven;t the foggiest! There are straight sinoid parts and then the data, so I suspect that the frequency/phase is changed, but don't know how.
[20:57] <Ian_> If there are any markings on your switch device, then Mr Google might be able to help you track down conversations about it on a site or forum somewhere.
[20:57] <day> yeah i will open that thing up
[20:58] <day> i thought it would be easy to see what is going on for someone with decent radio knowledge. guess i was mistaken :/
[20:58] <Ian_> Interesting as it is in the absence or an edmoore 1:1 tutorial I suspect that we are well off thread so will be cutting you loose in a few moments.
[20:59] <day> i think we hit a wall anyways
[20:59] <day> thanks for your time
[21:00] <Ian_> I guess that these things are proprietry and designed to work not communicate in the broader sense and so for those of us with standard radio knowledge. we are at a bit of an unfair disadvantage.
[21:00] <Ian_> My background is in telegraphy operations. I'm not necessarily one of the wireless gurus that regularly live here . . .
[21:00] <Oddstr13> day: https://dl.dropboxusercontent.com/u/4306267/ShareX/2015/07/2015-07-22_23-02-23.png
[21:01] <day> Oddstr13: :O how
[21:01] <Ian_> Been good all the same, Good luck and do let us know if you make any positive progress
[21:01] <Oddstr13> audacity, amplify allowing clipping
[21:02] <Ian_> I guess that you sliced it Oddstr13 - I'm getting old :)
[21:04] <Oddstr13> the data rate of that thing is rather fast
[21:09] <jokke_> and Soyuz is up ... bit high altituding :D
[21:11] <day> Oddstr13: how did you cut off the curve so nicely on top. i only see vertical lines now. the horizontal ones are beyond the scale
[21:16] <Oddstr13> day: scroll out once while hovering the scale on the left
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[21:20] <day> ty
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[21:34] <SpacenearUS> New vehicle on the map: 03SUSF - 12http://tracker.habhub.org/#!qm=All&q=SUSF
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[22:05] <SpeedEvil> https://www.youtube.com/watch?v=NMbM-ERy2Lk - sort of related
[22:05] <SpeedEvil> (large latex balloons which burst
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[22:53] Action: Laurenceb__ has been playing with Levenberg-Marquardt
[22:54] <Laurenceb__> I'm convinced this is just a version of unscented kalman
[22:54] <Laurenceb__> or more likely the other way around
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[22:55] <Laurenceb__> maybe it should be called Levenberg-Marquardt-Kalman
[22:57] <Ian_> Laurencab__ be advised that your unsavoury link of [22:39] 21 July was both offensive, irrisponsible and unacceptable in the context of the ethos of this channel
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[22:58] <Laurenceb__> troll alert
[22:59] <Laurenceb__> wait that
[22:59] <Laurenceb__> def trolling
[23:04] <Laurenceb__> Ian_ is obviously not a fan of devvo
[23:08] Nick change: fl_0|afk -> fl_0
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[23:34] <_charlie> u wot m8 is such an old meme never ever use it
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[00:00] --- Thu Jul 23 2015