Date   

Re: APRS / LoRa

Barry
 

There is a ton of info on the http://www.loratracker.uk/ web site. The Links tab is probably the easiest way to find all the info and Stuart (the webmaster) has been very helpful getting me started with LoRa technology. I’ve been using APRS for our balloon launches, but I like the 2-way transmission feature LoRa offers and plan to use LoRa for a back-up tracker as well as a way to control various things aboard a flight like cameras, a cut-down mechanism, etc. I can’t help much more than provide the above link as I only acquired a few LoRa modules last week and not yet had a chance to connect them to an Arduino, do some programming and try them out. (when I ordered the LoRa modules I probably should have also ordered some of the boards/kits sold on the loratracker web site to save time before being able to try them out, but I have a few other uses that I also plan to use the radio modules for which will require writing my own software and using different hardware.

 

Barry
VE6SBS

 

From: GPSL@... [mailto:GPSL@...] On Behalf Of WA0TJT wa0tjt@... [GPSL]
Sent: Sunday, July 02, 2017 10:05 AM
To: GPSL@... Groups
Cc: jh.schule@...
Subject: [GPSL] Fwd: APRS / LoRa

 

 

Joachim,

I’ve forwarded this to the best, most knowledgable group anywhere, they should be able to help you.

 

Guys?

 

Keith, WAØTJT

 

 



Begin forwarded message:

 

From: Joachim Hoffmüller <jh.schule@...>

Subject: APRS / LoRa

Date: July 2, 2017 at 10:18:50 AM CDT

 

Hi Keith,

 

I got your email-address from ARHAB page on AX.25 packet radio. I have no experience with amateur radio but I am planning a HAB mission with some students. I read some interesting bits about LoRa technology for telemetry, which has the advantage of being license-free in Germany. 

 

Can you tell me about issues/advantages, and how to learn the necessary skills?

 

Regards

Joachim

 


APRS / LoRa

Keith Kaiser, WA0̷TJT
 

Joachim,
I’ve forwarded this to the best, most knowledgable group anywhere, they should be able to help you.

Guys?

Keith, WAØTJT



Begin forwarded message:

From: Joachim Hoffmüller <jh.schule@...>
Subject: APRS / LoRa
Date: July 2, 2017 at 10:18:50 AM CDT

Hi Keith,

I got your email-address from ARHAB page on AX.25 packet radio. I have no experience with amateur radio but I am planning a HAB mission with some students. I read some interesting bits about LoRa technology for telemetry, which has the advantage of being license-free in Germany. 

Can you tell me about issues/advantages, and how to learn the necessary skills?

Regards
Joachim


Re: WB8MSJ-1 pico balloon reappears SW of San Diego after doing battle with Hurricane Dora

Barry L. Lankford
 

Hi Bill,

I've been following the pico balloon race from their launch and have enjoyed following them and been a little surprised at the differences in their paths. Sounds like you've come up with a better demonstration of Chaos Theory than that silly "Butterfly Effect."

I expected some variation of course, but hadn't expected the sudden right turn your Dad's balloon (I think that was the one) took in Texas. I wonder how close together were their launch locations and time? The three seemed to be flying pretty close together for longer than I expected. Also, it took some time before I began to suspect that the three balloons were possibly/probably near-identical and that a race might be underway. I was also surprised that you could get the float altitude to be so close.

Differences in launch location and time; differences in "manufacturing tolerances" of the complete balloon/payload packages; differences in the gas fill and the resulting rate of climb and final altitude; etc - who can say what might have caused the most variation? I doubt any butterflies were involved. The slight differences in initial conditions result in a slow accumulation of differences in location such that very local weather differences around each balloon can, more and more, come into play. From there, essentially, the balloons are soon racing on entirely different race courses.

By the way, I guess I'd never known before what your Dad's call sign was, but I got very curious when I saw half of _MY_ call sign ("MSJ") on one of the pico balloons and eventually looked it up to see who it belonged to. Or maybe I'd known that previously and old age just took its toll - again! I guessed that WB4ELK would be Bev, not exactly a great leap in intellect on my part, but maybe it's a small sign the old brain hasn't completely rotted away.

Barry N4MSJ
PS, Glad to see WB8MSJ-1 is back in the race since I now feel I have a sort of tenuous "connection" with it.

On 7/1/2017 12:33 AM, wb8elk@aol.com [GPSL] wrote:
There are now officially still three balloons in the GPSL Pico Balloon Race on Day 13. My Dad's balloon WB8MSJ-1 just reappeared after being lost for a week over the Pacific south of Baja California. It fought a valiant battle with Hurricane Dora and looks like it survived the encounter nicely. It is flying at the same altitude as before and is about 300 miles SW of San Diego. Bev WB4ELK-4 is predicted currently to be just east of Bermuda (their only APRS iGate was blown down by a hurricane and has not been replaced) while Mike KD2EAT-13 is well into the lead speeding along across Turkmenistan. It is possible that KD2EAT-13 and WB8MSJ-1 might meet up over Hawaii in a few days after flying in opposite directions around the World :-)
- Bill WB8ELK


WB8MSJ-1 pico balloon reappears SW of San Diego after doing battle with Hurricane Dora

Bill Brown
 

There are now officially still three balloons in the GPSL Pico Balloon Race on Day 13. My Dad's balloon WB8MSJ-1 just reappeared after being lost for a week over the Pacific south of Baja California. It fought a valiant battle with Hurricane Dora and looks like it survived the encounter nicely. It is flying at the same altitude as before and is about 300 miles SW of San Diego. Bev WB4ELK-4 is predicted currently to be just east of Bermuda (their only APRS iGate was blown down by a hurricane and has not been replaced) while Mike KD2EAT-13 is well into the lead speeding along across Turkmenistan. It is possible that KD2EAT-13 and WB8MSJ-1 might meet up over Hawaii in a few days after flying in opposite directions around the World :-)

- Bill WB8ELK


Pico balloon race still going on after 12 days

Bill Brown
 

Wow...what a day for Bev's balloon WB4ELK-4. After 11 days and a several thousand mile trip from Kansas to the Pacific Ocean and back, her balloon flew across northern Alabama this morning all the way to the Georgia border and then decided to do a 180 degree course change to come back home to Huntsville to visit me. I'm guessing that I somehow put a "return to home" feature in my code :-) Late afternoon the balloon flew directly over my work building (I had several coworkers out in the parking staring up at the sky for awhile). I did manage to see a flash of reflected sunlight from it after it was about 6 miles to the northwest. It also managed to fly within a few hundred feet of my Madison house a few minutes after it flew over my work. The odds of a foil party balloon launched from Kansas flying directly over my work and house seems quite astronomical to me. Perhaps Bev's balloon is on a holding pattern waiting for better trans-Atlantic winds to try to catch up to Mike KD2EAT-13's balloon which is slowly flying over the Mediterranean Sea south of Italy today. Joe WB8MSJ-1's balloon appears to have been captured by Hurricane Dora off the SW coast of Mexico.

- Bill WB8ELK


Re: GPSL Pico Balloon Race update for Day 8

BASE
 

KD2EAT-13 has found the jetstream. Last three transmissions at 157, 170 and 145 mph!!


On Sunday, June 25, 2017, 10:22:32 PM EDT, wb8elk@... [GPSL] wrote:


 

At the end of Day 8 of the GPSL Pico balloon race, Mike KD2EAT-13 has nearly made it back to the launchsite after an 8-day journey to the West Coast and back. At sunset today his balloon was last heard about 50 miles SW of Hutchinson, KS. Bev WB4ELK-4 has decided to visit next year's site for GPSL and is currently just north of Boise, Idaho. Mike also flew near next year's GPSL site yesterday. Bev's balloon is predicted to fly over Hutchinson two days from now. Joe WB8MSJ-1 has decided to hang out over the Pacific south of Baja California for a few days and is out of range of any APRS receive stations.  - Bill WB8ELK


GPSL Pico Balloon Race update for Day 8

Bill Brown
 

At the end of Day 8 of the GPSL Pico balloon race, Mike KD2EAT-13 has nearly made it back to the launchsite after an 8-day journey to the West Coast and back. At sunset today his balloon was last heard about 50 miles SW of Hutchinson, KS. Bev WB4ELK-4 has decided to visit next year's site for GPSL and is currently just north of Boise, Idaho. Mike also flew near next year's GPSL site yesterday. Bev's balloon is predicted to fly over Hutchinson two days from now. Joe WB8MSJ-1 has decided to hang out over the Pacific south of Baja California for a few days and is out of range of any APRS receive stations.  - Bill WB8ELK


Analyzing Images

L. Paul Verhage KD4STH
 

This summer I am working at Northwest Nazarene University where they are researching drone use in agriculture. Specifically using drones and robots to collect images from fruit orchards. The software I'm learning to use to make sense of the images is Matlab, a matrix math program.

Yesterday I took one of the images from the thermal imager and ran it through a Matlab script I wrote. I've attached the original image and the final one. If you would like to learn how I did this and how you should be able to do the same with the freeware version of Matlab called Octave, check out my blog, NearSys.blogspot.com. I will make regular updates there about my progress.

So the diagonal streak is the cord to Jim Emmert's audio beacon.


GPSL 2017 KC5TRB Videos

Harry M
 


Re: GPSL Pico Balloon Race still flying

Michael Hojnowski
 

Apparently, my balloon's sense of direction isn't too good.  Either that, or I forgot to tell it which way one customarily circumnavigates!  Sheesh!  I think Bev's balloon took some bad advice and is following MINE instead of her Father-in-law's! hehe

https://aprs.fi/#!call=a%2FWB4ELK-4%2Ca%2FWB8MSJ-1%2Ca%2FKD2EAT-13&timerange=345600&tail=345600

Mike / KD2EAT

On 6/21/2017 2:52 AM, wb8elk@... [GPSL] wrote:
 

All three pico balloons are still flying after four days aloft and a long trip across KS, OK, TX and Mexico. Bev WB4ELK-4 and Mike KD2EAT-13 are flying in formation southwest of San Diego today. My Dad's balloon (WB8MSJ-1) has taken a big turn north and is over southern Utah. All three might have a chance of returning to the launchsite in Kansas.


We really enjoyed GPSL, the conference was wonderful, the food was fantastic and the launch and chase was great fun except for the $213 travel pass fee through the town of Burrton :-( . It was great seeing everyone and we look forward to next year's event. 

- Bill WB8ELK and Bev WB4ELK


Re: GPSL Pico Balloon Race still flying

Joe WB9SBD
 

How do you make that list where all three are tracked at the same time?

Joe WB9SBD

The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com

On 6/21/2017 1:52 AM, wb8elk@... [GPSL] wrote:
All three pico balloons are still flying after four days aloft and a long trip across KS, OK, TX and Mexico. Bev WB4ELK-4 and Mike KD2EAT-13 are flying in formation southwest of San Diego today. My Dad's balloon (WB8MSJ-1) has taken a big turn north and is over southern Utah. All three might have a chance of returning to the launchsite in Kansas.

We really enjoyed GPSL, the conference was wonderful, the food was fantastic and the launch and chase was great fun except for the $213 travel pass fee through the town of Burrton :-( . It was great seeing everyone and we look forward to next year's event. 

- Bill WB8ELK and Bev WB4ELK


GPSL Pico Balloon Race still flying

Bill Brown
 

All three pico balloons are still flying after four days aloft and a long trip across KS, OK, TX and Mexico. Bev WB4ELK-4 and Mike KD2EAT-13 are flying in formation southwest of San Diego today. My Dad's balloon (WB8MSJ-1) has taken a big turn north and is over southern Utah. All three might have a chance of returning to the launchsite in Kansas.

We really enjoyed GPSL, the conference was wonderful, the food was fantastic and the launch and chase was great fun except for the $213 travel pass fee through the town of Burrton :-( . It was great seeing everyone and we look forward to next year's event. 

- Bill WB8ELK and Bev WB4ELK


Drone footage from GPSL

Mark Conner N9XTN
 

Did anyone taking drone footage last Saturday post it yet?  Wondering how it turned out. 

Mark 

Sent from phone, sorry for typos and brevity


Re: GPSL 2018

L. Paul Verhage KD4STH
 

That's correct, backup is the 17th.


On Jun 20, 2017 8:14 PM, "Michael Willett" <mw@...> wrote:
Hi Paul!

I think you got into base 2 mode. Do you mean the 17th as a backup date

Very much looking forward to the event and visiting Idaho!

Yah, about the plan for Thursday... The number of wineries toured should be directly proportional to the availability of Aspirin and the strength of the coffee on Friday morning. :) :)

--Michael
K5NOT



On 6/20/2017 5:36 PM, 'L. Paul Verhage' nearsys@... [GPSL] wrote:
 

I would like to hold GPSL 2018 from June 14th to 16th with 18th as a backup launch date. Will this work for most everyone?

I will reserve a block of hotel rooms in Nampa, ID (about 20 minutes from Boise). The wineries for Thursday's tours are located in Caldwell, which is next door to Nampa. I'll share what I find on the cost of a tour van, I figure it will be safer to wine tour that way.

Dinner on Thursday will be in the Basque block. Carpooling is recommended.

So that's a start.

One warning, due to the moutainous nature of Idaho, we often have to drive 30 minutes to an hour to reach a launch site.



Re: GPSL 2018

Michael
 

Hi Paul!

I think you got into base 2 mode. Do you mean the 17th as a backup date

Very much looking forward to the event and visiting Idaho!

Yah, about the plan for Thursday... The number of wineries toured should be directly proportional to the availability of Aspirin and the strength of the coffee on Friday morning. :) :)

--Michael
K5NOT



On 6/20/2017 5:36 PM, 'L. Paul Verhage' nearsys@... [GPSL] wrote:
 

I would like to hold GPSL 2018 from June 14th to 16th with 18th as a backup launch date. Will this work for most everyone?

I will reserve a block of hotel rooms in Nampa, ID (about 20 minutes from Boise). The wineries for Thursday's tours are located in Caldwell, which is next door to Nampa. I'll share what I find on the cost of a tour van, I figure it will be safer to wine tour that way.

Dinner on Thursday will be in the Basque block. Carpooling is recommended.

So that's a start.

One warning, due to the moutainous nature of Idaho, we often have to drive 30 minutes to an hour to reach a launch site.



GPSL 2018

L. Paul Verhage KD4STH
 

I would like to hold GPSL 2018 from June 14th to 16th with 18th as a backup launch date. Will this work for most everyone?

I will reserve a block of hotel rooms in Nampa, ID (about 20 minutes from Boise). The wineries for Thursday's tours are located in Caldwell, which is next door to Nampa. I'll share what I find on the cost of a tour van, I figure it will be safer to wine tour that way.

Dinner on Thursday will be in the Basque block. Carpooling is recommended.

So that's a start.

One warning, due to the moutainous nature of Idaho, we often have to drive 30 minutes to an hour to reach a launch site.


Thermal Image

L. Paul Verhage KD4STH
 

A connector for my NIR and visible cameras pulled loose balloon with tracker KD4STH-7. So I'm relying on Google Maps to identify features. 

I've attached one image that shows Gypsum Creek in thermal.

This is going to be a lot of work. So I'm taping that connector down next time.  

--
Dr. L. Paul Verhage
Near Space Evangelist


PBC & Fouled Cute lines

Joe WB9SBD
 

I just say this toy. where it brags about no more tangled lines.

I wonder how well it would work for our systems?

Joe WB9SBD
--

The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com


Back in Idaho

L. Paul Verhage KD4STH
 

I got back home this morning. Boy, do I need to mow the lawn again. By the way, it was a little chilly went I got back (just saying).

Thanks Zack for hosting GPSL again, it was another great session. Good luck on those planning to launch for the solar eclipse.

And everyone, plan to visit Idaho for GPSL 2018. We're looking at Pella for 2019 and we have a lead for 2020.


Wanted, missing balloon

moody.michael@...
 

As most of you know, our balloon went bonkers and never really did transmit packets reliably. Paul's tracker quit a few minutes after launch, and mine quit somewhere around 17,000'. Unfortunately, that was not enough info to make a successful prediction for the landing site. Tom and I stayed out until after 5pm looking, but not having decoding capability or DF capability on the balloon or in the car made life tough. Next year's MOHAB-2 will have a DF beacon and I'll upgrade my tracking game to have mobile decoding.


Tom and I appreciate everyone's efforts in helping us. We are hoping a kind hearted Kansan will call or email if they find it.


See you all next year in Idaho!


Mike KD0MEQ and Tom

the MOHAB team

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