highaltitude.log.20190325

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[01:50] <molo> hey all. were the hysplit paths removed from habhub? or am I doing something wrong and not seeing them?
[01:52] <molo> (on the tracker)
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[02:14] <Ian_> molo you might be better asking your question on #habhub where Admins are known to lurk.
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[04:04] <molo> Ian_: thanks
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[06:37] <SpacenearUS> New position from 03U3B-25 after 0314 hours silence - 12https://tracker.habhub.org/#!qm=All&q=U3B-25
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[08:44] <SpacenearUS> New position from 03TA2MUN-15 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=TA2MUN-15
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[09:00] <kenny_> HEllo
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[09:43] <SA6BSS-Mike> PE2BZ: https://imgur.com/zYxSIFR
[09:44] <SA6BSS-Mike> got my reset supervisors, sems to work, slowly raising voltage on the rs41 board and it still just poops to life around 3V,
[09:45] <SA6BSS-Mike> looks like it will be sunny this afternoon, will try it outside then
[09:45] <Darkside> what are you up to?
[09:45] <SA6BSS-Mike> rs41 floater with solar :)
[09:45] <Darkside> oh nice!
[09:45] <Darkside> the RS41 power circuit is interesting
[09:46] <Darkside> i need to try and bypass all the power on stuff
[09:46] <Darkside> that boost converter should run down to like 0.85V input, but with the power circuitry in place its more like 1.5V
[09:46] <SA6BSS-Mike> it could be interresting lower the power consumption
[09:46] <Darkside> does the GPS on the RS41 do any decent low power modes?
[09:46] <SA6BSS-Mike> but after it gets gps look its not that powerhungry
[09:46] <Darkside> as its an older ublox
[09:47] <SA6BSS-Mike> looks like it, initaly arounf 80mA and after it (apperas) have a good gps lock it goes down to 50mA
[09:48] <SpacenearUS> New vehicle on the map: 03F6KFI-12 - 12https://tracker.habhub.org/#!qm=All&q=F6KFI-12
[09:48] <SA6BSS-Mike> have an analog powersupply so something like that anyway
[09:48] <PE2BZ> Looks like an official modification Mike !
[09:48] <Darkside> SA6BSS-Mike: i mean the newer ubloxes use way less current in that 1 Hz powersave mode
[09:48] <Darkside> not sure the ublox 6 does it though
[09:49] <PE2BZ> Is the ublox on the rs-41 less sensitive as the 6 7 or 8 series ?
[09:49] <Darkside> it is a 6-series
[09:49] <Darkside> just in a different package
[09:49] <Darkside> i think the problem is more the crappy antenna :P
[09:49] <Darkside> still, with a clear sky its fine..
[09:51] <SA6BSS-Mike> its mainly the power consumption and the 6 series had eprom support
[09:52] <SA6BSS-Mike> nowdays its on NEO-M8N that have support for eeprom
[09:53] <SA6BSS-Mike> no probelm getting loock inside with my simple gps repeater
[09:53] <Darkside> lots of separation between the RX and TX antenna i hope!
[09:53] <Darkside> else you would have made a good GPS oscillator
[09:53] <Darkside> :P
[09:54] <SA6BSS-Mike> the are in oposite ends :)
[09:54] <Darkside> hehe
[09:54] <Darkside> so i've still been having issues with the Si4032 going for a walk
[09:54] <Darkside> wondering if you ever experienced that SA6BSS-Mike
[09:55] <Darkside> i've launched quite a few RS41s just in the foam case, and when they get too cold (note - im running continuous transmit at max power), the radio PLL Appears to unlock from its reference, and it goes wandering up in frequency
[09:55] <Darkside> then as it warms up on descent, it drifts back down, until it re-locks and all is good again
[09:55] <Darkside> its repeatable too - i can hit the chip with freezer spray and make it happen, or put it in my freezer and make it happen (though that takes a while)
[09:55] <SA6BSS-Mike> nop, no experience in that
[09:56] <Darkside> very veyr wewird
[09:56] <Darkside> weird*
[09:56] <SA6BSS-Mike> sound like I should put some foam around the tx section
[09:56] <Darkside> its been very repeatable
[09:57] <Darkside> i've tried a few things but it still has issues
[09:57] <Darkside> i'd be interested if you can repeat the same issue withfreezer sptray
[09:57] <Darkside> freezer spray*
[09:57] <Darkside> though it is a pretty harsh test
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[09:59] <SA6BSS-Mike> dont have any feezer spray at hand but we will see when launched if its behaves the same
[09:59] <Darkside> it surely shouldnt be the way i'm driving the chip
[09:59] <Darkside> its rpetty much the same way as is done for RTTY, but i do 4FSK
[10:00] <SA6BSS-Mike> does that si have an internal osc, cant see any nearby?...reading datasheet...
[10:00] <Darkside> it takes 25 mhz from the GPS TCXO
[10:00] <SA6BSS-Mike> aha
[10:00] <Darkside> theres a trace that runs right around the board
[10:00] <Darkside> well through some internal layers i think
[10:00] <Darkside> but it pops out at a little cap on the side of the Si4032
[10:01] <SA6BSS-Mike> ok
[10:01] <Darkside> the oscillator is fine in the cold
[10:01] <Darkside> the problem is definitely within the radio chip
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[12:28] <SpacenearUS> New vehicle on the map: 03BUZZ - 12https://tracker.habhub.org/#!qm=All&q=BUZZ
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[13:15] <SpacenearUS> New vehicle on the map: 03E1 - 12https://tracker.habhub.org/#!qm=All&q=E1
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[13:35] <SpacenearUS> New vehicle on the map: 03F6KFI-11 - 12https://tracker.habhub.org/#!qm=All&q=F6KFI-11
[13:37] <SpacenearUS> New vehicle on the map: 03M6 - 12https://tracker.habhub.org/#!qm=All&q=M6
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[14:06] <SA6BSS-Mike> PE2BZ: I can confirm that MAX809/MAX810 are microprocessor (¼P) supervisory circuits works :)
[14:08] <SA6BSS-Mike> using the max809 2.93v version
[14:11] <SpacenearUS> New vehicle on the map: 03KB1KVR - 12https://tracker.habhub.org/#!qm=All&q=KB1KVR
[14:13] <PE2BZ> SA6BSS-Mike, you feed the animal on the battery connectors ?
[14:26] <SA6BSS-Mike> I feed it here https://imgur.com/vMoazRC
[14:27] <SA6BSS-Mike> I have it runing outside as M6 , lets see how long it run with 6 of 52x26 panels
[14:28] <SA6BSS-Mike> using the reset point you posted
[14:30] <PE2BZ> Thanks, points taken ;-)
[14:30] <SA6BSS-Mike> :)
[14:31] <PE2BZ> max ordered, somehow forgot to do that....
[14:32] <PE2BZ> For anyone interested, did run some tests on the DRF4463 radio modules, they start TX from 140 MHz and while bought for 433 MHz, with power value set to ¨32¨ in arduino software, they run 17 dBm on 434 MHz but 19 dBm on 144 MHz and the drawn current for arduino and radio is in both cases 30 mA.
[14:43] <SpacenearUS> New vehicle on the map: 034X6UB-11 - 12https://tracker.habhub.org/#!qm=All&q=4X6UB-11
[14:54] <SpacenearUS> New vehicle on the map: 03BK-Ostvest4 - 12https://tracker.habhub.org/#!qm=All&q=BK-Ostvest4
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[15:35] <SA6BSS-Mike> PE2BZ: it ran down to about 15°
[15:36] <PE2BZ> That´s nice !
[15:37] <PE2BZ> Send it to us, with aprs on 70 cm enabled :-)
[15:37] <SA6BSS-Mike> unfortenately I have cit the borad of and aprs id off :/
[15:37] <SA6BSS-Mike> *cut
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[15:50] <SpacenearUS> New position from 03AE0SS-7 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=AE0SS-7
[15:50] <SpacenearUS> New position from 03KC0D-1 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=KC0D-1
[15:50] <SpacenearUS> New position from 03KC0D-2 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=KC0D-2
[15:52] Action: PE2BZ thinks that taking 25 MHz from the RS41 GPS might be a source for Es´Hailsat LNB external oscillator feed
[16:04] <PE2BZ> SA6BSS-Mike, put my RS41 with foam and 6 x 52 x 52 mm on the weighing scale but 32 gram is to much ;-) Now designing leightweight mount for 6 x 52 x 26 mm which appears to give enough current to run the RS41 :-)
[16:05] <SA6BSS-Mike> I estimate mine will be around 13 gram
[16:05] <SA6BSS-Mike> in total
[16:09] <PE2BZ> How do you ¨fix the panels¨ ? Any image ?
[16:10] <SA6BSS-Mike> no, im on right now, ping you whn I have it ready
[16:10] <PE2BZ> But I am seriously considering modification of an LBN with the 25 MHz from the RS41 tracker :-)
[16:11] <SA6BSS-Mike> yeah, they are good to take bits and piezes from if you have a bunch :)
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[16:14] <SpacenearUS> New vehicle on the map: 03AE0SS-13 - 12https://tracker.habhub.org/#!qm=All&q=AE0SS-13
[16:14] <SpacenearUS> New vehicle on the map: 03K0SCC-11 - 12https://tracker.habhub.org/#!qm=All&q=K0SCC-11
[16:14] <SpacenearUS> New vehicle on the map: 03K0SCC-14 - 12https://tracker.habhub.org/#!qm=All&q=K0SCC-14
[16:14] <SpacenearUS> New vehicle on the map: 03KC0D-14 - 12https://tracker.habhub.org/#!qm=All&q=KC0D-14
[16:14] <SpacenearUS> New vehicle on the map: 03KE0BMV-11 - 12https://tracker.habhub.org/#!qm=All&q=KE0BMV-11
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[17:41] <SpacenearUS> New position from 03SP6ZWR-n after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=SP6ZWR-n
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[18:13] <SpacenearUS> New vehicle on the map: 03SP6ZWR-13 - 12https://tracker.habhub.org/#!qm=All&q=SP6ZWR-13
[18:17] <SA6BSS-Mike> PE2BZ: https://imgur.com/a/e7UZuH6
[18:18] <SA6BSS-Mike> some hockup wire left , like vcc and --- from the cells to pcb
[18:19] <SA6BSS-Mike> drilled a small hole in the middle where you see there is no layers below, tried another sulotion first but as its 4 layer the center support hit gnd
[18:20] <SA6BSS-Mike> anyway, glued the support in
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[19:15] <PE2BZ> SA6BSS-Mike, Nice!
[19:23] <PE2BZ> Is that 1.5 mm2 installation wire or thinner ?
[19:47] <SA6BSS-Mike> center support is 0.8 and the others is 0.4
[19:50] <PE2BZ> ;-) looks larger on the image ;-)
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[21:54] <Darkside> PE2BZ: the 25 MHz from the RS41 is not from the GPS
[21:54] <Darkside> its just from a TCXO
[21:54] <Darkside> that TCXO is used to clock the GPS chip
[21:54] <Darkside> so its not going to be any better than putting a TCXO in a LNB
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[22:05] <SpacenearUS> New position from 03BSS18 after 034 days silence - 12https://tracker.habhub.org/#!qm=All&q=BSS18
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[22:57] <SpacenearUS> New position from 03GATTO1 after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=GATTO1
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[00:00] --- Tue Mar 26 2019