Date   

New Amateur Satellites to be launched.

Mike Bogard
 

Greetings,

Apologies for this short notice. i got it of another list and thought that there might be some interest.

New Amateur Satellites are scheduled to be launched Sunday at 5pm Central.  That is less than one hour from when I sent this email.

Genesis-G
Genesis-J

They are aboard a Firefly Alpha Rocket launching from Vandenberg Air Force Base in California.

Stream video of the live launch at the link below, this link probably will become a recording of the launch that can be watched after the launch too:

_._,_._,_


Re: NWS Sonde Chase and Recovery

Mark Conner N9XTN
 

If you have a Raspberry Pi 3 or 4 available, radiosonde_auto_rx works very well with most SDRs.


I've found that antennas capable of working the 70cm ham band will work fine for receiving the 403 MHz sondes.  I have a short dual-band mobile mounted at 25 ft AGL and can receive DFM-17 sondes at over 500 km distance.  Much easier than the 1680 MHz band sondes.

73 de Mark N9XTN





On Sun, Sep 11, 2022 at 11:23 AM James Ewen VE6SRV <ve6srv@...> wrote:
Anyone have a link for the SondeMonitor? I saw a little Arduino based unit for the first time a few weeks ago. 

Are there multiple versions, or is there just one that has been developed?



On Sun, Sep 11, 2022 at 10:20 k6sts via groups.io <k6sts=yahoo.com@groups.io> wrote:
Congrats Cliff, looks like a RS-41.  And yes it is addictive. 
Have fun, 
Cheers, 
Doug k6sts.  Living in Florida 


On Sun, Sep 11, 2022 at 11:59 AM, Clif Brown
Decided to try my hand at chasing and recovering a NWS balloon. This one was was launched at 7AM from Peachtree City, GA and landed in East Cobb (NW Metro ATL). The homeowner was very friendly and grateful to have someone get the orange parachute out of his pine tree.

I used sondehub.org prediction to get me to the general area and then tracked using an SDR-RTL/HDSDR/SondeMonitor with a 2M whip antenna (mag mount).

GPS was dead on.  The payload was in a pine tree in a residential neighborhood.

Recovery was easier than any of my three HAB launches.

This WxSonde chasing could be addictive.  Most of the fun of HAB at a fraction of the cost.

Cliff
KW4CL

--
James
VE6SRV


Re: NWS Sonde Chase and Recovery

Hank Riley
 


Graw is a German company which recently won a NOAA/NWS contract to supply sondes to more than half of the US upper air network of 71 stations.  The rest will be from Vaisala it looks like.  The Lockheed Martin sondes, made in the US and formerly widely used by the NWS, seem to be left out in the cold now with just a few NWS stations still using the LMS-6. They're also used by the Vandenberg and Cape Canaveral Space Force installations.



Re: NWS Sonde Chase and Recovery

Clif Brown
 

It's a DFM-17


Re: NWS Sonde Chase and Recovery

Clif Brown
 

https://www.coaa.co.uk/sondemonitor.htm

It's a trial for 21 days, after which they want payment.

Using it in trial mode worked well.


Re: NWS Sonde Chase and Recovery

James Ewen VE6SRV
 

Anyone have a link for the SondeMonitor? I saw a little Arduino based unit for the first time a few weeks ago. 

Are there multiple versions, or is there just one that has been developed?



On Sun, Sep 11, 2022 at 10:20 k6sts via groups.io <k6sts=yahoo.com@groups.io> wrote:
Congrats Cliff, looks like a RS-41.  And yes it is addictive. 
Have fun, 
Cheers, 
Doug k6sts.  Living in Florida 


On Sun, Sep 11, 2022 at 11:59 AM, Clif Brown
Decided to try my hand at chasing and recovering a NWS balloon. This one was was launched at 7AM from Peachtree City, GA and landed in East Cobb (NW Metro ATL). The homeowner was very friendly and grateful to have someone get the orange parachute out of his pine tree.

I used sondehub.org prediction to get me to the general area and then tracked using an SDR-RTL/HDSDR/SondeMonitor with a 2M whip antenna (mag mount).

GPS was dead on.  The payload was in a pine tree in a residential neighborhood.

Recovery was easier than any of my three HAB launches.

This WxSonde chasing could be addictive.  Most of the fun of HAB at a fraction of the cost.

Cliff
KW4CL

--
James
VE6SRV


Re: NWS Sonde Chase and Recovery

k6sts
 

Congrats Cliff, looks like a RS-41.  And yes it is addictive. 
Have fun, 
Cheers, 
Doug k6sts.  Living in Florida 


On Sun, Sep 11, 2022 at 11:59 AM, Clif Brown
<cliff.brown@...> wrote:
Decided to try my hand at chasing and recovering a NWS balloon. This one was was launched at 7AM from Peachtree City, GA and landed in East Cobb (NW Metro ATL). The homeowner was very friendly and grateful to have someone get the orange parachute out of his pine tree.

I used sondehub.org prediction to get me to the general area and then tracked using an SDR-RTL/HDSDR/SondeMonitor with a 2M whip antenna (mag mount).

GPS was dead on.  The payload was in a pine tree in a residential neighborhood.

Recovery was easier than any of my three HAB launches.

This WxSonde chasing could be addictive.  Most of the fun of HAB at a fraction of the cost.

Cliff
KW4CL


Re: NWS Sonde Chase and Recovery

Joe WB9SBD
 

I wonder what size balloons they use now days since the payload is sooo tiny now.

Joe WB9SBD

On 9/11/2022 10:59 AM, Clif Brown wrote:
Decided to try my hand at chasing and recovering a NWS balloon. This one was was launched at 7AM from Peachtree City, GA and landed in East Cobb (NW Metro ATL). The homeowner was very friendly and grateful to have someone get the orange parachute out of his pine tree. I used sondehub.org prediction to get me to the general area and then tracked using an SDR-RTL/HDSDR/SondeMonitor with a 2M whip antenna (mag mount).

GPS was dead on.  The payload was in a pine tree in a residential neighborhood.

Recovery was easier than any of my three HAB launches.

This WxSonde chasing could be addictive.  Most of the fun of HAB at a fraction of the cost.

Cliff
KW4CL


NWS Sonde Chase and Recovery

Clif Brown
 

Decided to try my hand at chasing and recovering a NWS balloon. This one was was launched at 7AM from Peachtree City, GA and landed in East Cobb (NW Metro ATL). The homeowner was very friendly and grateful to have someone get the orange parachute out of his pine tree.

I used sondehub.org prediction to get me to the general area and then tracked using an SDR-RTL/HDSDR/SondeMonitor with a 2M whip antenna (mag mount).

GPS was dead on.  The payload was in a pine tree in a residential neighborhood.

Recovery was easier than any of my three HAB launches.

This WxSonde chasing could be addictive.  Most of the fun of HAB at a fraction of the cost.

Cliff
KW4CL


Spot PT2

David Stillman KI6YMZ
 

Free to good home, send me your address and I'll send you my old but working Spot PT2.

Hardware only, it needs a ~$15 subscription to be used, but can be canceled after. Was used successfully on a few flights with no issue, aside from it doesn't track altitude.

cheers,

Dave W0ADV


Unplanned balloon trip

Hank Riley
 

Chinese man trapped aloft in hydrogen balloon for 2 days



BEIJING (AP) — Chinese state media say a man has been found safe after he spent two days aloft in a hydrogen balloon, traveling about 320 kilometers (200 miles), after it became untethered and flew away while he was using it to harvest pine nuts from a tree.

The man, identified only by his surname, Hu, and a partner were collecting pine nuts on Sunday in a forest park in Heilongjiang province in northeastern China when they lost control and the balloon sailed off.

The other person jumped to the ground, and a search was launched for the escaped balloon and Hu.

State broadcaster CCTV said rescuers were able to contact the man by cellphone the following morning and instructed him to slowly deflate the balloon to land safely. It took another day before he reached the ground about 320 kilometers (200 miles) to the northeast in Fangzheng region, close to the border with Russia.

Hu was in good health, apart from a pain in his lower back, possibly from standing the entire time he was in the air, CCTV said.

An official who gave only his surname, Fu, at the publicity department of the Hailin Forestry Administration Co. on Thursday confirmed the balloon incident and described Hu as being in his 40s. He said Hu was recovering in a hospital but declined to give further details.

Pine nuts are found inside pine cones and are a frequent ingredient in dishes served in the northeast, formerly known as Manchuria.


Where are the GPSL technical session videos from July 15?

Hank Riley
 

Mike,

It's been 3 1/2 weeks since I emailed you about this, and in a few days it will be 8 weeks since GPSL 2022.

Where are the videos and session presentation slides?  Many interested folks would not have been able to take time off from work to watch any of the Zoom, and even more would not have stayed with it all day long.

Please provide an update for us here.

I have audio of most of the day (missing only the first and a part of the second) and will start to think about posting it somewhere while we wait for the videos if you don't anticipate their being posted pretty soon.

Hank


Re: for 2023

Jules Hojnowski
 


hi
i saw an email sometime back, asking for ideas as to when to schedule the gpsl for 2023.
i vote for anytime after july 2nd :)
thanks !
Jules


From: GPSL@groups.io <GPSL@groups.io> on behalf of Bill Brown via groups.io <wb8elk@...>
Sent: Saturday, July 16, 2022 8:35:57 PM
To: GPSL@groups.io <GPSL@groups.io>
Subject: Re: [GPSL] SWIRLL Launch captured by roof cam.
 
Hi Mark,

  I wrote the script so I will try directly uploading using the pysondehub library.  Thanks for sending this info !!

- Bill WB8ELK


-----Original Message-----
From: Mark Jessop <vk5qi@...>
To: GPSL@groups.io
Sent: Sat, Jul 16, 2022 7:33 pm
Subject: Re: [GPSL] SWIRLL Launch captured by roof cam.

Hi Bill,

Is this script available online anywhere? If you're using python it wouldn't be that difficult to send data to amateur.sondehub.org directly using the pysondehub library. Usage of this is documented here: https://github.com/projecthorus/pysondehub/wiki/SondeHub-Amateur-Uploader-Class-Usage

This way any telemetry information will get displayed properly, instead of just languishing in a comment field somewhere. I'd suggest using a different callsign to what is uploaded through APRS though, else things could get a bit weird on the tracker.

Cheers,
Mark VK5QI

On Sun, Jul 17, 2022 at 10:00 AM Bill Brown via groups.io <wb8elk=aol.com@groups.io> wrote:
The UAH Balloon launched from the SWIRLL building has the callsign of W4CQD-2 on APRS.FI tracker.habhub.org and amateur.sondehub.org.

On WSPRnet.org look for KN4TPG since this balloon is transmitting on the 20m WSPR band with that callsign.  I port that data to the APRS tracking sites via a Python script.

- Bill WB8ELK


-----Original Message-----
From: Christopher Rose <kb8uih88@...>
To: 'GPSL@groups.io' <GPSL@groups.io>
Sent: Sat, Jul 16, 2022 12:05 pm
Subject: Re: [GPSL] SWIRLL Launch captured by roof cam.

What is the balloon call?


-----------------------------------------
From: "Bruce Coates"
To: GPSL@groups.io
Cc:
Sent: Saturday July 16 2022 11:08:56AM
Subject: [GPSL] SWIRLL Launch captured by roof cam.

Hi

The SWIRLL rooftop camera captured this just a moment before launch.

73, Bruce - VE5BNC







Re: BASE 114 Successful- BASE 115 tomorrow

stan siems
 

Is any one using the lite aprs tracker I am having problems with erratic transmission times

--
Thanks

Stan Siems

CNS INTERNET SERVICES

319-231-3449

The difficult we do right away the impossible just takes a little longer.

Semper FI


Re: BASE 115

Kev
 

Fantastic work Howard, and thanks for sharing the details.

Cheers
Kev


Re: BASE 115

Mark Garrett
 

Contratulations on your series of flights Howard.  
Watched the flight on APRS and knew you wanted to avoid trees-sorryEmoji
Hope your recovery goes well.

Mark
KA9SZX

On Saturday, July 30, 2022 at 01:14:58 PM CDT, BASE_DePauw <hlbrooks@...> wrote:


BASE 115 flew today.  Flight ascents were a little bit faster than predicted.  I am afraid that my students have adopted an overly conservative approach (they have heard about Mike Manes :)) and we gave the balloons a little too much gas.  We did have a nice separation of the tandem balloon, although it was 10 km instead of 15 km.

If you are following the flight on amateur.sondehub.org or aprs.fi, you are aware that the radios are still beaconing happily from the 30 m tree top behind a very nice home in Johnson County, Indiana. The property owner was at home and very agreeable.  Fortunately, he has an arborist and a tree service.  Recovery should be completed next week.

We are out of time, balloons, and gas for our summer flights.

Thanks again for your support,
Howard

--
Howard L. Brooks
Professor of Physics and Astronomy
241 Julian Science and Mathematics Center
DePauw University
2 E. Hanna Street
Greencastle, IN 46135
(765) 658-4653
hlbrooks@...


BASE 115

BASE_DePauw
 

BASE 115 flew today.  Flight ascents were a little bit faster than predicted.  I am afraid that my students have adopted an overly conservative approach (they have heard about Mike Manes :)) and we gave the balloons a little too much gas.  We did have a nice separation of the tandem balloon, although it was 10 km instead of 15 km.

If you are following the flight on amateur.sondehub.org or aprs.fi, you are aware that the radios are still beaconing happily from the 30 m tree top behind a very nice home in Johnson County, Indiana. The property owner was at home and very agreeable.  Fortunately, he has an arborist and a tree service.  Recovery should be completed next week.

We are out of time, balloons, and gas for our summer flights.

Thanks again for your support,
Howard

--
Howard L. Brooks
Professor of Physics and Astronomy
241 Julian Science and Mathematics Center
DePauw University
2 E. Hanna Street
Greencastle, IN 46135
(765) 658-4653
hlbrooks@...


BASE 114 Successful- BASE 115 tomorrow

BASE_DePauw
 

B_._
BASE 114 showed a successful cutaway at the predicted altitude of 15 km.  Easy recovery in a soybean field adjacent to the property owner's home.  He was amazed that we had tracked the descent  into his field and my students walked directly to the payload.

BASE 115 will fly on Saturday, July 30 from the roof of the Julian Science and Mathematics Center at DePauw.  It will be a tandem 600 gram set of Kaymont balloons using hydrogen.  Initial ascent will be around 5 m/s (1000 ft/min) with a transition at 15 km (50,000 feet) to a rate between 1.5 and 2 m/s (300-400 ft/min) to burst around 30 km (98,000 feet).  

Ascent rate may be tweaked in the morning before launch to increase the likelihood of avoiding heavily wooded areas.

Thanks for the support,
Howard

--
Howard L. Brooks
Professor of Physics and Astronomy
241 Julian Science and Mathematics Center
DePauw University
2 E. Hanna Street
Greencastle, IN 46135
(765) 658-4653
hlbrooks@...


BASE 114 and 115

BASE_DePauw
 

We will be wrapping up our summer flights on the next two days.

Friday, July 29 at 8:00 AM EDT (1200UTC) we will do a test flight on the reprogrammed balloon cutdown device.  The intention is to cut the balloon off at 15 km (50 kft).  The 350 gram balloon will be helium filled and the call signs should be W9YJ-14 and W9YJ-13.

Saturday, July 30 at 8:00 AM EDT (1200 UTC) we will do a flight of the Geiger array with a slow ascent from 15 km until burst.  If the Friday flight is successful we will climb to 15 km at 5 m/s (1000 ft/min) then climb at 2 m/s (400 ft/min( until burst around 30 km (98 kft).  If Friday's cutdown is not successful, then it will be a slow climb from the surface at 2 m/s (400 ft/min)  Call signs on Saturday should be W9YJ-11 and W9YJ-13.  

Both launches will be from the roof of the Julian Science and Mathematics Center on the DePauw University campus in Greencastle, Indiana.

Thanks for your support,
Howard

--
Howard L. Brooks
Professor of Physics and Astronomy
241 Julian Science and Mathematics Center
DePauw University
2 E. Hanna Street
Greencastle, IN 46135
(765) 658-4653
hlbrooks@...


Re: GPS-320FW(AS) failed at 39986 feet.

trcostan
 


The datasheet shows -20c as it’s minimum operating temp and 25km as it’s max height without a firmware update for space operations. I would expect the button battery as mentioned above! 

On Mon, Jul 25, 2022 at 10:40 AM Michael Hojnowski <kd2eat@...> wrote:
One other thought.  If the GPS module has a button battery to keep the
parameters cached, perhaps the battery wore out?  I had that happen with
one GPS, and it defaulted back to non-airborne mode.

Mike / KD2EAT

On 7/25/2022 11:08 AM, Bruce Coates wrote:
> Hi Kip
>
> This isn't one that's affected the 18km limit.  It normally has an
> altitude limit of 25km but this is one with the high altitude firmware
> that works well above 30km.  As I mentioned, this tracker and GPS has
> been successfully on our previous flights.
>
> I did come across some mentions of this unit being affected by the
> April 2019 date roll-over.  Although we've used it in the past, thanks
> to COVID, the last successful flight with it was before that. 
> Hmmmmmmmmmmmmm
>
> I also live the UBlox GPSs and I also use them exclusively now.  I
> think the ham that built this one is also going to switch to a UBlox one.
>
> 73, Bruce
>
> On 2022-07-25 6:51 a.m., AE5IB (Kip) wrote:
>> Yes.
>>
>> Some GPS brands stop working between 32000 and 40000 feet.
>>
>> There was a rule that said a consumer GPS can not work above
>> something like 32000 feet or above a certain speed. It was to prevent
>> cheep GPS units to work on enemy missiles.
>>
>> Some manufacturers read it as a certain height OR a certain speed,
>> not AND.
>>
>> I prefer the UBlox GPS because it has modes you can set with their
>> configuration program.  (Free download) Aircraft 1 mode is for a
>> slower aircraft. Still faster than a balloon but the slowest of the
>> aircraft modes. I have had it up to 132,000 feet.
>>
>> It comes with automobile mode as default, so you have to change it.
>>
>> None will work over a certain height. I think it is 160,000 feet.
>> Again because of military rules.
>>
>> Kip
>>
>
>
>
>
>
>






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