Date   

Re: Proposed migration to groups.io for GPSL in next couple of weeks

Keith Kaiser, WA0̷TJT
 

Many other Yahoo groups have already migrated. I like the new groups.io place, lets move.
Keith, WA0̷TJT



On Feb 25, 2018, at 9:06 PM, Mark Conner mconner1@... [GPSL] <GPSL-noreply@...> wrote:


GPSL list members,

As many of you know, Yahoo Groups can be a PITA.  While it seems to have been reasonably well-behaved recently, we have had periods where it is very stubborn about setting different features, subscribing/unsubscribing members, and so forth.  I don't think Yahoo is putting a lot of time and resources into their Groups functionality, and I could see it dying out over time.

Groups.io has been around since about 2015.  Several ham radio groups in the Omaha area have moved from Yahoo to this service, and all have said it's been for the better.  I think there are some features we could make use of, like sub-lists, hashtags, and so on.

There is also an automated migration feature, which will essentially transfer over all the message archive (but not attachments) and subscribers.  All GPSL subscribers would get a message asking them to confirm their e-mail address to join the new list.  If you'd rather use a new e-mail address instead of the one linked to the Yahoo list, you can ignore that invitation and subscribe by an e-mail request from your preferred account.

If we go forward, the migration would start on or about March 5th - this is to allow time for everything to be stabilized on the new list before heavy-duty discussions about GPSL 2018 begin (not to mention balloon flying season for most subscribers).  It may take as long as a week to move all the messages over and get all the subscription invitations sent out.  After that time, the Yahoo GPSL list would go into caretaker status, with periodic reminders sent out that we are on groups.io instead.  I'm hoping I can set up an auto-responder so that when someone posts to Yahoo GPSL after the closure date, it will let them know the list has moved.  The Yahoo list will not be deleted anytime soon and the archives will remain open.  We will respond to any migration issues as soon as we can.
 
I just checked the archive and the GPSL list has been around since May 2002.  It was a "splinter" of the KNSP list, which Paul KD4STH began around 1996 I think.  The GPSL list has 402 members, but about 30 of the addresses appear to be dead. 

I think we can do this with a minimum of pain and have ourselves on a better platform going forward.  If we find something horribly wrong, we will maintain the ability to revert back to Yahoo if necessary.  If there is anyone out there that has objections to the move because of known problems with groups.io, please respond with details. 

73 de Mark N9XTN
GPSL list owner





Proposed migration to groups.io for GPSL in next couple of weeks

Mark Conner N9XTN
 

GPSL list members,

As many of you know, Yahoo Groups can be a PITA.  While it seems to have been reasonably well-behaved recently, we have had periods where it is very stubborn about setting different features, subscribing/unsubscribing members, and so forth.  I don't think Yahoo is putting a lot of time and resources into their Groups functionality, and I could see it dying out over time.

Groups.io has been around since about 2015.  Several ham radio groups in the Omaha area have moved from Yahoo to this service, and all have said it's been for the better.  I think there are some features we could make use of, like sub-lists, hashtags, and so on.

There is also an automated migration feature, which will essentially transfer over all the message archive (but not attachments) and subscribers.  All GPSL subscribers would get a message asking them to confirm their e-mail address to join the new list.  If you'd rather use a new e-mail address instead of the one linked to the Yahoo list, you can ignore that invitation and subscribe by an e-mail request from your preferred account.

If we go forward, the migration would start on or about March 5th - this is to allow time for everything to be stabilized on the new list before heavy-duty discussions about GPSL 2018 begin (not to mention balloon flying season for most subscribers).  It may take as long as a week to move all the messages over and get all the subscription invitations sent out.  After that time, the Yahoo GPSL list would go into caretaker status, with periodic reminders sent out that we are on groups.io instead.  I'm hoping I can set up an auto-responder so that when someone posts to Yahoo GPSL after the closure date, it will let them know the list has moved.  The Yahoo list will not be deleted anytime soon and the archives will remain open.  We will respond to any migration issues as soon as we can.
 
I just checked the archive and the GPSL list has been around since May 2002.  It was a "splinter" of the KNSP list, which Paul KD4STH began around 1996 I think.  The GPSL list has 402 members, but about 30 of the addresses appear to be dead. 

I think we can do this with a minimum of pain and have ourselves on a better platform going forward.  If we find something horribly wrong, we will maintain the ability to revert back to Yahoo if necessary.  If there is anyone out there that has objections to the move because of known problems with groups.io, please respond with details. 

73 de Mark N9XTN
GPSL list owner



Gas Prices

L. Paul Verhage KD4STH
 

Here's what I have for gas prices. Zack, can you post this on the website?

Thanks
K tank, 196 cu ft for $65.00
S tank, 120 cu ft for $43.00
Q tank, 65 cu ft for $35.00

There's a rental charge of $12.00 per month that I'll need to add to the final cost.


Re: SMA/SMA Cable Assembly Recommendations

Leo Bodnar <leo@...>
 

Joe,

1GHz SMA cable is different from 10GHz SMA cable and metrology-grade cable is different from something you can cancel-out during measurements - you need to specify what you are trying to do.

Industry standard is HUBER+SUHNER but if you want something on a budget look at Radiall https://www.digikey.com/products/en/cable-assemblies/coaxial-cables-rf/456?k=radiall

Cheers
Leo


On 30 Jan 2018, at 01:13, satellitesurfer@... [GPSL] wrote:

Greetings!

I'm looking for recommendations on cable assemblies terminated in an SMA connector at each end.  I'd like to spend a little for a bench cable (for experiments), and a little more for flight quality.  Thoughts?

Thanks!
Joe




Re: SMA/SMA Cable Assembly Recommendations

Zack Clobes W0ZC
 

I use Digikey for my cables.  Not cheap, but I've never had any questionable quality either.

On Mon, Jan 29, 2018 at 7:13 PM, satellitesurfer@... [GPSL] <GPSL-noreply@...> wrote:
 

Greetings!

I'm looking for recommendations on cable assemblies terminated in an SMA connector at each end.  I'd like to spend a little for a bench cable (for experiments), and a little more for flight quality.  Thoughts?

Thanks!
Joe




SMA/SMA Cable Assembly Recommendations

Chief Surfer
 

Greetings!

I'm looking for recommendations on cable assemblies terminated in an SMA connector at each end.  I'd like to spend a little for a bench cable (for experiments), and a little more for flight quality.  Thoughts?

Thanks!
Joe



Re: GPSL 2018

Jerry
 

Paul,

My wife (Beth) and I will be there Thursday.  I can be a designated driver and take 2 besides ourselves.  Beyond lunch and Beth doing some tasting I doubt we will buy any wine.

I can also run predictions for the week if you want.
 
Jerry Gable
Balloon Flight Prediction tools
http://www.s3research.com



From: "'L. Paul Verhage' nearsys@... [GPSL]"
To: "GPSL@..."
Sent: Saturday, January 27, 2018 3:23 AM
Subject: [GPSL] GPSL 2018

 
Here's an update and questions.

Thursday starts with three stops in the Snake River Wine Region, http://www.winesnw.com/sna.html. This is a AVA recognized wine region where tastings are only $5. We will stop at Parma Ridge, Williamson's, and Koenig's. Parma Ridge will be first and will have a lunch buffet for us (so we'll start there at 11:30). Now we need to spend at least $300 for them to be opened on Thursday. The $5 tasting fee, lunch, and any wine purchases count towards the $300. So I need to know how many people plan to attend and if you think you might buy wine (the wine here is every bit as good as Napa Valley, but not as expensive).

For safety, we will hire a profession touring company to drive us around. We can save money if we can get some designated drivers instead. I will be one, but I can only carry an additional two people. Can other people commit to being designated drivers?

If we hire a driver, we will leave from a local hotel in Nampa.

We are planning dinner in the Basque block of Boise. This will involve about a 30 minute drive. We'll schedule dinner for about 7:00 PM so people can recover from wine tasting and drive safely. It would be helpful to have drivers so we can cut down on the number of cars. Please let me know a head count for people going out to dinner and number of cars.

Friday we'll meet at Jackson Lecture Hall at Northwest Nazarene University in Nampa. Parking in campus is free. We have the lecture hall, room 138 from 8 to 5. So we'll start at 9 am. Some breakfast items will be provided. Lunch will be catered. I was thinking of using one of the following, Subway, Panera, Chipolte, or Qdoba. Are there any strong feelings either way? I will also take other recommendations.

Dinner will be at a local Mexican restaurant, so that may effect your feeling about lunch. The restaurant is Chapala's and it's in Nampa on Nampa-Caldwell Blvd.

Can I get a head count for Friday?

My local welding supplier is Norco. They charge about $70 for a T tank of hydrogen (I'll get the exact price later this week). They will deliver gas on Friday, but not Saturday. So I need to know where we'll launch.. I will make predictions the week of GPSL and finalize a launch site. Can I get someone to help commit to also running official predictions? This being mountainous Idaho, we may need to travel an hour to the launch site and Norco won't deliver if the site is remote. Please let me know if you can bring a truck and help move gas. We'll drop off the empty ranks at my house where Norco will pick them up. If we're lucky, we'll be able to launch from my two acres. In which case, we won't need to carry our own gas.

So I also need to know how many tanks I need to reserve.

Okay, I think that's it for now. Thanks for 
reading.



GPSL 2018

L. Paul Verhage KD4STH
 

Here's an update and questions.

Thursday starts with three stops in the Snake River Wine Region, http://www.winesnw.com/sna.html. This is a AVA recognized wine region where tastings are only $5. We will stop at Parma Ridge, Williamson's, and Koenig's. Parma Ridge will be first and will have a lunch buffet for us (so we'll start there at 11:30). Now we need to spend at least $300 for them to be opened on Thursday. The $5 tasting fee, lunch, and any wine purchases count towards the $300. So I need to know how many people plan to attend and if you think you might buy wine (the wine here is every bit as good as Napa Valley, but not as expensive).

For safety, we will hire a profession touring company to drive us around. We can save money if we can get some designated drivers instead. I will be one, but I can only carry an additional two people. Can other people commit to being designated drivers?

If we hire a driver, we will leave from a local hotel in Nampa.

We are planning dinner in the Basque block of Boise. This will involve about a 30 minute drive. We'll schedule dinner for about 7:00 PM so people can recover from wine tasting and drive safely. It would be helpful to have drivers so we can cut down on the number of cars. Please let me know a head count for people going out to dinner and number of cars.

Friday we'll meet at Jackson Lecture Hall at Northwest Nazarene University in Nampa. Parking in campus is free. We have the lecture hall, room 138 from 8 to 5. So we'll start at 9 am. Some breakfast items will be provided. Lunch will be catered. I was thinking of using one of the following, Subway, Panera, Chipolte, or Qdoba. Are there any strong feelings either way? I will also take other recommendations.

Dinner will be at a local Mexican restaurant, so that may effect your feeling about lunch. The restaurant is Chapala's and it's in Nampa on Nampa-Caldwell Blvd.

Can I get a head count for Friday?

My local welding supplier is Norco. They charge about $70 for a T tank of hydrogen (I'll get the exact price later this week). They will deliver gas on Friday, but not Saturday. So I need to know where we'll launch. I will make predictions the week of GPSL and finalize a launch site. Can I get someone to help commit to also running official predictions? This being mountainous Idaho, we may need to travel an hour to the launch site and Norco won't deliver if the site is remote. Please let me know if you can bring a truck and help move gas. We'll drop off the empty ranks at my house where Norco will pick them up. If we're lucky, we'll be able to launch from my two acres. In which case, we won't need to carry our own gas.

So I also need to know how many tanks I need to reserve.

Okay, I think that's it for now. Thanks for 
reading.


Re: DashCam [2 Attachments]

L. Paul Verhage KD4STH
 

After testing, I would not recommend this camera. It creates a series of 10 minute videos and overwrites every 50 minutes. The resolution is not very good, either.
---------- Forwarded message ----------
From: <kb8uih88@...>
Date: Jan 22, 2018 7:42 AM
Subject: RE: [GPSL] DashCam [2 Attachments]
To: "L. Paul Verhage" <nearsys@...>
Cc:

Can you set it for continuous shooting or will it erase after set time limit and keep recording over and over? I had a camera that I couldn't get out of a loop that recorded for 3 minutes and then reset and erased what I had saved because no incident occurred that the user needed to save. You had to manually shut it off to stop the erasure of what you had saved.

Chris

-----------------------------------------

From: "L. Paul Verhage' nearsys@... [GPSL]"
To:
Cc:
Sent: 20-Jan-2018 22:36:14 +0000
Subject: [GPSL] DashCam [2 Attachments]

 
[Attachment(s) from L. Paul Verhage included below]

So the camera weighs 1.4 ounces or 40 grams. I've attached images of the box and of the camera with a life-size hand for comparison.

Now to learn how to use it and test that it will run off of a 3-cell LiPo battery.


DashCam

L. Paul Verhage KD4STH
 

So the camera weighs 1.4 ounces or 40 grams. I've attached images of the box and of the camera with a life-size hand for comparison.

Now to learn how to use it and test that it will run off of a 3-cell LiPo battery.


Video Camera

L. Paul Verhage KD4STH
 

One of my local Wal-Marts is selling a HD DVR dash cam for $9

I need to look further into this but this camera can record 1080p HD and includes a 4GB SD card which you can increase to a larger memory. It does have night vision although I don't know how well that's going to work for night time use in near space.

It runs off of 12 volts so I suspect it will work with 3 lithium cells. 

This may be an inexpensive and lightweight camera for BalloonSat use.


Laser Demo with James Bond

L. Paul Verhage KD4STH
 

I put together a 2,500 mW blue laser demo video and posted it on Youtube under my channel. My apologies to MGM!



--
Dr. L. Paul Verhage
Near Space Evangelist


Drone Rescue

L. Paul Verhage KD4STH
 


Drone Video

L. Paul Verhage KD4STH
 

I posted a short video of my drone flight at the beach in Oceanside, California. Here is the link, https://youtu.be/q729VvSFlqk


Re: After weather balloons become boring...

James Hannon
 

Never bored with fireworks. They put a GoPro on this one and managed to keep it from spinning.
https://www.youtube.com/watch?v=NQbkVbBdaqo
Jim Hannon

On 1/10/2018 8:51 PM, Michael mw@... [GPSL] wrote:
After weather balloons become boring, this is the next step to near space!
https://www.facebook.com/SciTechUniversedotcom/videos/1930087523924044/
--Michael Willett
--
WB0TXL
WEB Page http://www.ocrslc.net/
Blog http://jimhannon.wordpress.com
CoCoRaHS station IA-LN-7
42,11.90N,91,39.26W


Re: After weather balloons become boring...

L. Paul Verhage KD4STH
 

Whoa! That was pretty good. Of course, they didn't quite get the altitude I'm expecting.

On Jan 10, 2018 7:51 PM, "Michael mw@... [GPSL]" <GPSL-noreply@...> wrote:



After weather balloons become boring, this is the next step to near space! 



After weather balloons become boring...

Michael
 


After weather balloons become boring, this is the next step to near space! 


Re: GPS modules free to a good home

AE5IB (Kip)
 

Two of them are U-Blox based from what I can see. You can get a utility for a free download to configure them for high altitude from U-Blox website. 

I think it is Aircraft 1. The default is probably Mobile which assumes you are on the ground and stops working at around 35k feet. 

On Dec 30, 2017 3:39 PM, "Mark Conner mconner1@... [GPSL]" <GPSL-noreply@...> wrote:
 

GPSLers,

I have three GPS modules laying around that are doing nothing useful for me right now.  They're from failed experiments I've done for balloon payloads.  I think all three modules are functional, but I could not get them to do what I wanted to do and I've run out of patience fiddling with them, so I'm ready to give them to someone else who might have more time and inclination.



I got this in 2009, played with it a while, then put it away and recently rediscovered it in my junk pile.  From the list archives, it appears others have used this with success on balloon flights.  3.3V power and TTL interface..  Can log data autonomously.  If you search the GPSL list archives from September 2009 you'll see a discussion of this unit.



This is a uBlox NEO-6M module and interface board.  Designed for 3.3V TTL.  I attempted to make a 5V level shifter but still could not get anything intelligible from the unit.  I believe these are rated for 60+ kft, but worth checking datasheets.  Chip antenna on reverse.



Similar but with a 5V interface.  Similar issues.  Connector for external antenna, but there is a chip antenna on the reverse too.


I think if someone had an Arduino or other microcontroller, these units would be suitable.  I was hoping to make them work with a TinyTrak or OpenTracker with a minimum of fuss, but can't seem to get it done.  Someone with more patience, knowledge, and diagnostic equipment might have better luck.

The SparkFun module was originally $60, and the other two were $20-25.  I'll send one or all them to you free of charge, and if you're so inclined after your experiments you can send me what you think they're worth.  They're too good to throw out, and are serving no purpose in my container o' crap.

73 de Mark N9XTN


GPS modules free to a good home

Mark Conner N9XTN
 

GPSLers,

I have three GPS modules laying around that are doing nothing useful for me right now.  They're from failed experiments I've done for balloon payloads.  I think all three modules are functional, but I could not get them to do what I wanted to do and I've run out of patience fiddling with them, so I'm ready to give them to someone else who might have more time and inclination.



I got this in 2009, played with it a while, then put it away and recently rediscovered it in my junk pile.  From the list archives, it appears others have used this with success on balloon flights.  3.3V power and TTL interface.  Can log data autonomously.  If you search the GPSL list archives from September 2009 you'll see a discussion of this unit.



This is a uBlox NEO-6M module and interface board.  Designed for 3.3V TTL.  I attempted to make a 5V level shifter but still could not get anything intelligible from the unit.  I believe these are rated for 60+ kft, but worth checking datasheets.  Chip antenna on reverse.



Similar but with a 5V interface.  Similar issues.  Connector for external antenna, but there is a chip antenna on the reverse too.


I think if someone had an Arduino or other microcontroller, these units would be suitable.  I was hoping to make them work with a TinyTrak or OpenTracker with a minimum of fuss, but can't seem to get it done.  Someone with more patience, knowledge, and diagnostic equipment might have better luck.

The SparkFun module was originally $60, and the other two were $20-25.  I'll send one or all them to you free of charge, and if you're so inclined after your experiments you can send me what you think they're worth.  They're too good to throw out, and are serving no purpose in my container o' crap.

73 de Mark N9XTN


Robots on HF?

L. Paul Verhage KD4STH
 

I am writing about the ways amateur radio can be used to control robots. APRS is one good method for line of sight or through digipeaters.

I was just thinking about the possibility of controlling a robot over long distances, where some type of HF method would be ideal. Has anyone heard of a robot project controlled using HF methods?