highaltitude.log.20170319

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[04:08] <SpacenearUS> New vehicle on the map: 03N0CALL_chase - 12https://tracker.habhub.org/#!qm=All&q=N0CALL_chase
[04:44] <SpacenearUS> New position from 03HORUSLORA1 after 038 days silence - 12https://tracker.habhub.org/#!qm=All&q=HORUSLORA1
[04:44] <SpacenearUS> New vehicle on the map: 03VK5QI-9_chase - 12https://tracker.habhub.org/#!qm=All&q=VK5QI-9_chase
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[06:32] <SpacenearUS> New position from 03S-22 after 0311 hours silence - 12https://tracker.habhub.org/#!qm=All&q=S-22
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[08:46] <SpacenearUS> New position from 03SH05 after 036 hours silence - 12https://tracker.habhub.org/#!qm=All&q=SH05
[08:53] <SpacenearUS> New position from 03SH04 after 036 hours silence - 12https://tracker.habhub.org/#!qm=All&q=SH04
[09:04] <SpacenearUS> New vehicle on the map: 03MARS-4 - 12https://tracker.habhub.org/#!qm=All&q=MARS-4
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[10:06] <SpacenearUS> New position from 03HELLAS after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=HELLAS
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[11:18] <SpacenearUS> New position from 03Legionowo after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=Legionowo
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[12:27] <SpacenearUS> New position from 03RSIST after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=RSIST
[12:32] <SpacenearUS> New position from 03K6RPT-11 after 0313 hours silence - 12https://tracker.habhub.org/#!qm=All&q=K6RPT-11
[12:36] <SpacenearUS> New vehicle on the map: 03HB9ONO-9_chase - 12https://tracker.habhub.org/#!qm=All&q=HB9ONO-9_chase
[12:43] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12https://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
[12:54] <PB0AHX> !flights
[12:54] <SpacenearUS> 03PB0AHX: Current flights: 03UBSEDS21 434.610 CONTESTIA 16/1000 10(2e88)
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[13:03] <SpacenearUS> New vehicle on the map: 030641630106_chase - 12https://tracker.habhub.org/#!qm=All&q=0641630106_chase
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[14:01] <SpacenearUS> New position from 03VE2WMG-11 after 0315 hours silence - 12https://tracker.habhub.org/#!qm=All&q=VE2WMG-11
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[14:22] <SpacenearUS> New vehicle on the map: 03KC3IHS-11 - 12https://tracker.habhub.org/#!qm=All&q=KC3IHS-11
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[14:23] <SpacenearUS> New vehicle on the map: 03KD5GOM-11 - 12https://tracker.habhub.org/#!qm=All&q=KD5GOM-11
[14:27] <SpacenearUS> New vehicle on the map: 03KF5KMP-1 - 12https://tracker.habhub.org/#!qm=All&q=KF5KMP-1
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[15:07] <AndyEsser> I know that Rigol doesn't get a huge amount of love here, but thought I'd share
[15:07] <AndyEsser> http://imgur.com/a/orI3N
[15:09] <craag> desk too tidy; clearly never actually used.
[15:10] <AndyEsser> clearly literally just built an hour ago :P
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[15:44] <Vaizki> That rigol PS has a weird input mechanism
[15:46] <SpeedEvil> Is it a flat-belt system?
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[15:49] <AndyEsser> Vaizki: you mean with the keypad type thing?
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[16:51] <SpacenearUS> New position from 03HIRFW-6 after 0314 hours silence - 12https://tracker.habhub.org/#!qm=All&q=HIRFW-6
[17:16] <SpacenearUS> New vehicle on the map: 03k3cIhs_chase - 12https://tracker.habhub.org/#!qm=All&q=k3cIhs_chase
[17:26] <SpacenearUS> New position from 03KF5KMP-8 after 0314 hours silence - 12https://tracker.habhub.org/#!qm=All&q=KF5KMP-8
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[18:08] <AndyEsser> I really hate putting connectors on cables :(
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[18:12] <PE2BZ> All kinds or especially the N-type to RG-213 cable ;-)
[18:13] <daveake> heh
[18:13] <SopaXorzTaker> AndyEsser, F-type with screw
[18:13] <daveake> Just use a blowtorch
[18:14] <PE2BZ> N-type crimp :-)
[18:14] <PE2BZ> I love them
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[18:26] <AndyEsser> I have one PL259 (or whatever they're called) to do
[18:26] <AndyEsser> plus a few N-types
[18:26] <AndyEsser> and put together the handheld Yagi that daveake mentioned in the Mailing List the other month
[18:32] <PE2BZ> pl-259 is the most irritating type. I never do solder the shield. I always ¨screw it¨
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[18:46] <mfa298> I generally choose pl259's with a compression type fitting, means you only need to solder the pin
[18:47] <mfa298> and probably does a better shield connection as well compared to the cheap ones you have to solder the shield through a hole
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[19:14] <Skwint> Do you guys and gals ever have trouble with your stuff icing up at altitude?
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[19:16] <SA6BSS-Mike> ofc thats wy we try get the ballon over 12000m over the weather
[19:17] <Vaizki> latex stretches and loses any ice on the way I'd assume
[19:17] <Vaizki> and when it's -40 there is zero humidity
[19:18] <SA6BSS-Mike> yeah, its quite interesting washing the telemetry from WX sondes how thw moisture in the air is allmost 0 over 12-13000m
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[19:33] <Skwint> that's nice to know. So basically just go UP ;)
[19:35] <SA6BSS-Mike> basicly yes, problem its not verry easy getting over 10000m with standard gear
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[19:40] Nick change: laurence__ -> Laurenceb_
[19:40] <Laurenceb_> !whereis HIRFW-3
[19:40] <SpacenearUS> 03Laurenceb_: 03HIRFW-3 was over 03Gulf Of Tonkin 10(19.73107,108.29548) at 0314110 meters about 032 days ago
[19:42] <AndyEsser> office/workshop is basically complete now :)
[19:43] <AndyEsser> http://imgur.com/a/foChb
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[19:49] <Skwint> my other question is ... how do you make batteries work up there? Or do you just run on solar and go to sleep at night?
[19:50] <AndyEsser> ensure the payload is insulated if it's just an Up->Burst->Down flight
[19:50] <AndyEsser> or solar and caps for floaters (I believe)
[19:52] <craag> well the lithium primary cells (eg. energizer ultimate lithium) are good down to ~-40
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[19:53] <craag> so you have to work hard to get those to have problems on an up-burst-down
[19:53] <craag> floaters are harder, especially as you're likely to want recharging
[19:55] <Skwint> It didn't occur to me to slap a huge capacitor on it. Can tell it's not my field ;)
[19:56] <Vaizki> supercaps are probably too heavy for floaters
[19:57] <Skwint> well, I wasn't thinking of anything too spectacular
[19:57] <aadamson> Vaizki, supercaps work just fine for floaters - all there is on HIRFW-3 and HIRFW-6, small 1.5F, weighs less than a battery and with solar works just fine
[19:58] <AndyEsser> http://uk.farnell.com/panasonic-electronic-components/eechz0e335/cap-double-3-3f-2-5v-rad/dp/1673325
[19:58] <AndyEsser> not bad
[19:58] <AndyEsser> 0.001472 kg
[20:00] <AndyEsser> And with that, time for me to leave the office before I end up falling asleep on the drive home
[20:00] <AndyEsser> ciao
[20:01] <aadamson> http://www.digikey.com/products/en/capacitors/electric-double-layer-capacitors-edlc-supercapacitors/61?k=589-1007-ND
[20:01] <aadamson> much better option if looking to replace a battery with a cap... voltage is better match, etc... basically don't have to do anything or can raise the float voltage on whatever you are using
[20:02] <aadamson> best one I found with *lots of cycles*
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[20:12] <Vaizki> mmmm nice
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[20:33] <SA6BSS-Mike> or just run the solarcells through a boost converter feeding the circuit without any capacitors
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[20:49] <SpacenearUS> New position from 03VK3YT-11 after 0311 hours silence - 12https://tracker.habhub.org/#!qm=All&q=VK3YT-11
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[20:54] <SpeedEvil> boost converer is unstable due to MPPT problems
[20:54] <SpeedEvil> buck converter in principle can work
[20:55] <SpeedEvil> Or boost if you disable until cell volts is high enough
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[21:05] <SpacenearUS> New position from 03PS-71 after 0312 hours silence - 12https://tracker.habhub.org/#!qm=All&q=PS-71
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[21:41] <SA6BSS-Mike> SpeedEvil: the one I´m using they name "Buck-Boost Charge Pump" and its working nicely - at ground, will send one up and try as soon as I get clear sky
[21:42] <SpeedEvil> The issue is that at low initial output volts, if the regulator kicks in, it tries to draw high current, and fails.
[21:42] <SpeedEvil> because the solar cell is mostly constnat current, with the amount of current set by light
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[21:44] <SA6BSS-Mike> I tried them and the tracker starts at 19 deg. solar angle with 2.4 volt in (4psc 26x52) and boost to 3.3v
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[21:45] <SA6BSS-Mike> have fitted another board with 4pch 19x26 need a sunny morning to see at what angle it will start tx
[21:46] <SA6BSS-Mike> its a reg710 by the way
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[21:48] <SA6BSS-Mike> its inductorless as all inductor boost regs have over 300ma start up current where this 710 start smothly with 100mA in, no peaking current
[21:48] <SA6BSS-Mike> I shouls say the ones I have tried have over 300mA startup current
[21:49] <SA6BSS-Mike> tried mcp1640 and tlv61225
[21:51] <SA6BSS-Mike> and the smaller solar cells should be 19x52 not 19x26
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[22:24] <aadamson> SA6BSS-Mike, You don't need a supercap per-se, I can run just fine on the SPV1040 without the cap. however, once the TX kicks off in HP mode (more than 10mA - ISS for example), the supercap lessens the likelyhood of a brownout
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[22:27] <aadamson> I've ran on 19x52's just fine with no cap, but you have to put them in series (just 2 of them) so that the SPV will come out of startup mode (v > .8)
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[23:17] <SpacenearUS> New position from 03M10WX-11 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=M10WX-11
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[23:51] <SpacenearUS> New vehicle on the map: 03VK5QI-9_chase - 12https://tracker.habhub.org/#!qm=All&q=VK5QI-9_chase
[23:51] <SpacenearUS> New position from 03YPADSONDE after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=YPADSONDE
[00:00] --- Mon Mar 20 2017