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ZL1RS balloon flight - BB01
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Poor thing...it looks like it was modified with a hand grenade! Still, as long as it works... Jack, W8TEE From: Bob Sutton via Groups.Io <zl1rs@...> To: [email protected] Sent: Friday, December 8, 2017 4:40 PM Subject: [QRPLabs] ZL1RS balloon flight - BB01
Up and flying ... U3S firmware and QRP-Labs synth board (modified
and trimmed down! ... see pix). 10mW into a 20m dipole. Four 52 x
19mm solar cells, 3V3 boost regulator, no battery.
Tracking at More info will appear on the QRP-Labs website in the 'Flights' section when Hans has time. 73, Bob? ZL1RS 3V3 boost regulator ? - ? GP-02 GPS?? - ? ATmega328P-AU ? -?? TMP36 temperature sensor?? -?? QRP-Labs synth board with TCXO 90cm 'clear balloon' (same as U3B-12 is currently flying under) Hydrogen gas, inflated to provide 3.5 to 4 grams of 'free lift' |
开云体育:-)????? Cut down with side cutters to save weight Jack.? The 3 boards in the pic weighed in at 5.8 grams after they were wrapped in insulation foam.73, Bob? ZL1RS On 9/12/2017 10:57 AM, jjpurdum via
Groups.Io wrote:
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Hi Bob Big congrats on the successful launch!? I have added your info to a QRP Labs tracking page and started the tracking (the first part of the flight is missing but I can fill that in later). See? 73 Hans G0UPL On Sat, Dec 9, 2017 at 12:39 AM, Bob Sutton via Groups.Io <zl1rs@...> wrote:
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Thanks for sharing your experiment with us Bob and good luck with your flight 73 Joe On Sat, Dec 9, 2017 at 8:09 AM, Bob Sutton via Groups.Io <zl1rs@...> wrote:
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开云体育Thanks Ian,It is a, ECS-TXO-5032 27 MHz TCXO (from Mouser).? It jumps like the FOX does.? I have another type which will go on the next flight ... when tested on the bench it seems to have smaller jumps than the ECS, but lets see what the reality is in the wild.? I can't give you a part number for that one because it came from China advertised as a certain part, but physically it does not resemble the picture/diagram in the spec sheet!? They have 27.00F D627 printed on them, but I don't find any info for that ... anyone? 73, Bob On 9/12/2017 12:52 PM, SM7ETW Jan
wrote:
Nice work Bob. |
开云体育Thanks Jan? (sorry for writing "Ian" last time, I didn't have my glasses on),The QRP-Labs board really suits something about 5mm x 3mm, but anything is possible with some fine wires if one is not so particular about the looks. 73, Bob |
开云体育Bob,
On 08/12/2017 21:39, Bob Sutton via
Groups.Io wrote:
Up and flying ... U3S firmware and QRP-Labs synth board (modified and trimmed down! ... see pix). 10mW into a 20m dipole. Four 52 x 19mm solar cells, 3V3 boost regulator, no battery. |
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Very cool Bob. If you have some info on it I would like to work on something similar with my kid to get her interested in the hobby.? 73 Don Meyerhoff WA2SWX On Dec 8, 2017 4:40 PM, "Bob Sutton via Groups.Io" <zl1rs=[email protected]> wrote:
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Would be quite interested in the info too
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John On 12/9/2017 7:54 AM, Don Meyerhoff wrote:
Very cool Bob. If you have some info on it I would like to work on something similar with my kid to get her interested in the hobby. --
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开云体育oops, I just tested something here locally and screwed up the tracking map.? Perhaps Hans can fix that?Looks like BB01 got hit with ice loading(?) yesterday.? There was a sharp drop in the temperature before it descended.? The last signal yesterday was probably when it went below the clouds in the area NE of Wellington, New Zealand (as seen on satellite weather imagery).? Once lower to the ground the warmer conditions apparently melted the ice and BB01 continued to fly.? It woke up after sun rise the next day once there was sufficient sun angle on the solar cells, and by this time it was about 1500km SE of New Zealand over the southern Pacific ocean.? The signal was starting and stopping indicating it must be in partial clouds, but more recently it has transmitted steadily and the high solar voltage indicates that it is in bright sunshine again. 73, Bob? ZL1RS |
开云体育Thanks for the info Dave ... as you say, not so cheap.?So far the ECS TCXO on BB01 has been OK ... I can see some 'steps' occasionally,? but the WSPR and JT9 still seems to decode.? The next one will try the Chinese TCXO (cost about $1). 73, Bob? ZL1RS On 9/12/2017 10:44 PM, David wrote:
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开云体育Yes, Jan ... it was the same tracking VK3YT Picospace balloons across the Pacific over the last 2-3 years.? Several stations receiving out to 2000km, then a few to 3000km, then just me for another 5000km or so.? After two F2 hops (8-10,000km) it gets difficult to receive a 10-20mW signal unless the balloon is near our antipode.? Check the WSPRnet.org results for VE3KCL (U3B-12) and K4JCW (HIRFW-6) over the past 2 weeks and see that the same applies in the Northern hemisphere with just a few stations receiving past 3000km.We have a very quiet countryside location on a hill top with negative horizon to the east, and the RX is on a 4 WL long Beverage RX antenna pointed at the location of BB01.? The difference between a Beverage antenna and any other wire antenna I tried was like night and day. The closest performing RX antenna was the Flag antenna ... it was only about 4dB worse. 73, Bob ZL1RS On 12/12/2017 11:25 AM, SM7ETW Jan
wrote:
Bob |
jjpurdum
Joe Pereira
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