highaltitude.log.20200730

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[02:52] <SpacenearUS> New vehicle on the map: 03MLMC-STEM_Chase - 12https://tracker.habhub.org/#!qm=All&q=MLMC-STEM_Chase
[02:52] <SpacenearUS> New vehicle on the map: 03MLMC02 - 12https://tracker.habhub.org/#!qm=All&q=MLMC02
[03:09] <SpacenearUS> New position from 03BB10 after 0313 hours silence - 12https://tracker.habhub.org/#!qm=All&q=BB10
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[06:02] <SpacenearUS> New position from 03N6CVO-13 after 0312 hours silence - 12https://tracker.habhub.org/#!qm=All&q=N6CVO-13
[06:08] Nick change: pe2bz_ -> PE2BZ
[06:22] <SpacenearUS> New vehicle on the map: 03Pd0gom_chase - 12https://tracker.habhub.org/#!qm=All&q=Pd0gom_chase
[06:23] <SpacenearUS> New vehicle on the map: 03Pd0gom-14_chase - 12https://tracker.habhub.org/#!qm=All&q=Pd0gom-14_chase
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[06:31] <SpacenearUS> New position from 03BZ3a after 0313 hours silence - 12https://tracker.habhub.org/#!qm=All&q=BZ3a
[06:36] <SpacenearUS> New position from 034FSKTEST after 035 days silence - 12https://tracker.habhub.org/#!qm=All&q=4FSKTEST
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[07:13] <PE2BZ> SA6BSS-Mike, local RX or websdr ?
[07:13] <PE2BZ> 2020-07-30 07:08 029ZME 14.097193 -13 -2 RN20 100 SA6BSS/RX JO68sc 8736 345
[07:14] <SA6BSS-Mike> cool, no , running a rsp1a from a butternut vertical
[07:15] <SA6BSS-Mike> so local rx
[07:15] <PE2BZ> Excellent :-) 720 m altitude
[07:15] <SA6BSS-Mike> good props, sunpspots are up and SFI are up 5 point
[07:16] <SA6BSS-Mike> last night I had the best US evening for severla month
[07:16] <SA6BSS-Mike> on 20m
[07:20] <SA6BSS-Mike> what balloon/s did you use?
[07:21] <PE2BZ> 2 qualatex (from the good season) with 8 gram payload and 13 gram necklift in total.
[07:22] <SA6BSS-Mike> rr
[07:23] <SA6BSS-Mike> 10500-10700m on He then
[07:25] <PE2BZ> I´ll take that offer ;-)
[07:26] <SA6BSS-Mike> :)
[07:26] <SA6BSS-Mike> im of to work but I l check in on my lunch break, l8er
[07:27] <PE2BZ> rrr. I have a day of on thursday :-)
[07:27] <SA6BSS-Mike> yeah, I should have been free today as well but last minute change put me on Saturday, but the weather will be nice then so i dont complain :)
[07:29] <PE2BZ> https://photos.app.goo.gl/jQKLPu6hVYFCY5MV6
[07:33] <SpacenearUS> New position from 03PS-76 after 0320 hours silence - 12https://tracker.habhub.org/#!qm=All&q=PS-76
[07:34] <SA6BSS-Mike> large cells!! interesting to see how low solar those will run the board,
[07:35] <SA6BSS-Mike> just ping me if you want the pcb and fw to turn of the gps during tx
[07:35] <SA6BSS-Mike> pcb is a bit larger so easier to build and will only as 0,15gr to the weight
[07:38] <SM0ULC-David> hi guys
[07:40] <PE2BZ> Good morning
[07:40] <PE2BZ> Mike is off to work ;-)
[07:42] <PE2BZ> SA6BSS-Mike, 39 x 19 mm are large cells ?
[07:46] <SM0ULC-David> :)
[07:47] <SM0ULC-David> preparing to do a quick visit to the office tomorrow. haven't been there in 5 months...
[07:48] <PE2BZ> You did not leave your lunch over there I hope....
[07:48] <SM0ULC-David> :D
[07:49] <PE2BZ> Log Per antenna´s for wspr tracker https://imgur.com/WA9UgSf
[07:54] <SM0ULC-David> cracked solarpanels?
[07:56] <PE2BZ> You´re right. Using guitar wire and cutting 1 cm of the wire...... Did not help to have the other end in a pair of pliers
[07:57] <SpacenearUS> New position from 03WSP2 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=WSP2
[07:57] <PE2BZ> So, after my blood pressure went down again I decided to keep the image :-)
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[08:08] <SM0ULC-David> :D
[08:11] <SM0ULC-David> fragile little ones
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[10:29] <SA6BSS-Mike> PE2BZ: rr, ok , thats the smallest ones :) looked larger!
[10:31] <PE2BZ> :-)
[10:31] <SA6BSS-Mike> so cells soldered together is 2,5gram and the pcb is 1gram, where did "all" the excess weight come from ?? :)
[10:32] <PE2BZ> A bit of hot glue, 2 times 1.7 gram for the 0,25 wire
[10:32] <SA6BSS-Mike> ohh, hot glue, yiak!
[10:32] <PE2BZ> A bit of duct tape to keep the balloons attached.
[10:33] <SA6BSS-Mike> thats weightless
[10:33] <PE2BZ> The solder hole for the wire disappeared after the first breaking of the panels. So I glued them sideways on top of the GPS
[10:33] <PE2BZ> 0.2 gram tape !
[10:33] <PE2BZ> That counts ;-)
[10:34] <PE2BZ> 20 m is closing on me....
[10:35] <SA6BSS-Mike> no 20m antenna?
[10:35] <PE2BZ> Nothing for HF over here.
[10:35] <PE2BZ> But my Kiwi with G5RV junior at qrl also nothing heard anymore.
[10:36] <SA6BSS-Mike> next time to avoids the hotglue just make a hock at the end, solder on the wire and then make 3 turns around the hock, best strain relese there is https://imgur.com/9Wqi1My
[10:38] <SA6BSS-Mike> or like this https://imgur.com/tkiI7n5
[10:41] <SpacenearUS> New position from 03KC3GMG-3 after 0313 hours silence - 12https://tracker.habhub.org/#!qm=All&q=KC3GMG-3
[10:43] <PE2BZ> 1 slot with 2 receivers, 1 slot with zero receivers, now a slot with 17 receivers....
[10:43] <PE2BZ> Let ´s not worry ....
[10:43] <SA6BSS-Mike> hehe
[10:43] <PE2BZ> https://photos.app.goo.gl/qsrMcafevvNea66Q7
[10:44] <PE2BZ> There´s plastic spray on top of the panels, so you´re not looking at the bottom
[10:45] <SA6BSS-Mike> ok, another thing that will be intereing about this flight :)
[10:45] <PE2BZ> The cotton is impregnated (it feeds the wire from the solar panels one side to the other) and glued to the top of the GPS, the positive side of the capacitor has a short wire bride to the PCB V+ to secure the solar ;-)
[10:46] <SA6BSS-Mike> I belive I used to get about 19° solar runtime on a "non Switching" ITC , we will see if the spray makes any difference
[10:46] <PE2BZ> Btw, 3.1 V battery voltage was reported as 3.12 V and 2.9 battery voltage as 2.92 V so I guess the solar measurement is truastworth
[10:47] <SA6BSS-Mike> ok
[10:47] <PE2BZ> The IP adrress is an Spyserver ;-)
[10:47] <PE2BZ> time for lunch over here.
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[10:48] <SA6BSS-Mike> rr Il be back tonight after work again
[10:48] <PE2BZ> HAve fun!
[10:48] <SA6BSS-Mike> always have!! :)
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[10:57] <chris_99> In case this hasn't been linked already - https://www.popularmechanics.com/space/telescopes/a33415232/nasa-balloon-telescope/
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[11:50] <SpacenearUS> New position from 03N6JED-13 after 0310 hours silence - 12https://tracker.habhub.org/#!qm=All&q=N6JED-13
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[13:30] <robbo79> hi all
[13:30] <robbo79> what do the blue and green circles mean on the map
[13:34] <craag> Hi robbo79, they're the radio horizons of the payload.
[13:34] <craag> So if you're standing on the ground at the blue one, the payload is at 0 degrees on the horizon.
[13:34] <craag> For the green one - it's at 5 degrees, and so you should be able to hear the signal by then.
[13:43] <robbo79> ok so i should be able to pick up on my auto rx when im in the blue circle?
[13:44] <craag> The commercial sondes don't quite have the range of the amateur stuff that the map was designed for, so you might need to wait a little longer.
[13:45] <craag> but if your antenna is up high without obstructions then it should be somewhere between the two circles.
[13:48] <robbo79> what do you rate as a good antenna, i just have a homemade 1/4wave monopole atm
[13:54] <SA6BSS-Mike> thats good enough, get it up high its gona work great
[13:55] <SA6BSS-Mike> ad lna if you have long cable runs
[13:56] <SA6BSS-Mike> PE2BZ: no prestreach?
[13:58] <robbo79> prestreach?
[13:59] <SA6BSS-Mike> you pump up a foil ballon to get it to float higher
[14:02] <SA6BSS-Mike> you streach the plastic with "high" pressure air before you emty it and fill with HE or H2
[14:03] <robbo79> ok
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[14:21] <PE2BZ> SA6BSS-Mike, no.
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[14:44] <PE2BZ> SA6BSS-Mike, what do you use for ¨home made balloons¨ and is it easy available in small amounts ? PD7R has ideas...
[14:45] <eor> SA6BSS-Mike, interesting stuff about the "prestretch"
[14:46] <eor> is that something that manufacturers recommend doing?
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[15:33] <SpacenearUS> New vehicle on the map: 03M0UPU-9 - 12https://tracker.habhub.org/#!qm=All&q=M0UPU-9
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[16:21] <YO3ICT> its a must for the chinese ones
[16:21] <YO3ICT> and even for qualatex/sbs, just a pressure test as a sanity check
[16:27] <eor> weird. that would seem like a counter-intuitive thing to do with totex balloons
[16:28] <eor> I would reason that excess handling increases the risk of puncture
[16:29] <SA6BSS-Mike> eor: we talk about foil balloons , not latex
[16:30] <SA6BSS-Mike> PE2BZ: got about 20m of film from a friend that at some point long ago bought it from fluffy
[16:30] <SA6BSS-Mike> http://film.fluffyscarsdale.com/
[16:30] <eor> oops. right.
[16:30] <SA6BSS-Mike> :)
[16:31] <SA6BSS-Mike> oh, cool upu testing a payload, must have been 4 years ago at least!!
[16:32] <SA6BSS-Mike> will call https://www.vepak.cz/contacts next week to see if its possible to get a roll of that TR9 evoh film mailed to Swe
[16:33] <SA6BSS-Mike> https://tt7hab.blogspot.com/
[16:34] <SA6BSS-Mike> you can read about tr9 on tt9 site
[16:34] <SA6BSS-Mike> tt7*
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[17:07] <SpacenearUS> New position from 03RJL-PiZ after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=RJL-PiZ
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[17:44] <SpacenearUS> New vehicle on the map: 03DC2EH-6 - 12https://tracker.habhub.org/#!qm=All&q=DC2EH-6
[17:48] <SM0ULC-David> When will the US switch to SI.. watched the Mars launch. Downrange and altitude in miles.. altitude in nautical miles??
[17:51] <eor> I don't think they have any plans to do that currently.
[17:52] <SA6BSS-Mike> well, like never I guess, its the aeronautical standard is feet and knots, where only China use metric
[17:52] <eor> that would be a political decision ultimately and I don't believe there is any political interest in doing that
[17:53] <eor> aviation used to be metric in the Soviet Union also but they caved in after the collapse
[17:53] Nick change: BitEvil -> SpeedEvil
[17:55] <eor> it's sad to think that supposedly China and North Korea are now the pioneers of international standards
[17:55] <eor> when it comes to aviation
[17:55] <superkuh> And confusing. Why would you think that?
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[17:56] <eor> most of the world is stuck with a mixture of retard and non-retard units
[17:57] <eor> for instance hPa for pressure in most parts of the world
[17:57] <eor> I think it should be either-or, this just makes it more confusing
[17:59] <eor> most EU operators also use kg for fuel quantities. the Canadians had a really serious near miss incident in the 80s because of fuel units
[17:59] <eor> apparently, nobody learned anything from Gimli glider
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[18:14] <SpacenearUS> New position from 03bzttnv2 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=bzttnv2
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[18:24] <TJ76> Hi, looking to see, does anyone know about the law Hydrogen filled High altitude Balloons in the UK?
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[18:42] <edmoore> yes
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[19:16] <Upu> SA6BSS-Mike: *Just testing APRS coverage with an APRS Handheld before testing an APRS payload :)
[19:17] <SA6BSS-Mike> rr, cool , welcome back to the hab world :)
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[21:12] <SpacenearUS> New vehicle on the map: 03DG2FS-1 - 12https://tracker.habhub.org/#!qm=All&q=DG2FS-1
[21:13] <SpacenearUS> New vehicle on the map: 03DG2FS_chase - 12https://tracker.habhub.org/#!qm=All&q=DG2FS_chase
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[23:59] <SpacenearUS> New position from 03BB10 after 0313 hours silence - 12https://tracker.habhub.org/#!qm=All&q=BB10
[00:00] --- Fri Jul 31 2020