Date   
Re: EOSS

L. Paul Verhage KD4STH
 

I don't know how we could have helped them. They were a few hours away from us when we got back and out of phone range. We received no messages, so we were in the dark.

We may want to hold every future GPSL out of mountainous locations. Good to hear they got back, I was expecting them to leave without a payload.

On Sat, Jun 16, 2018, 10:45 PM Mark Conner N9XTN <mconner1@...> wrote:
Glad they got it back!

- Mark


On Sat, Jun 16, 2018 at 11:35 PM L. Paul Verhage KD4STH <nearsys@...> wrote:
Just got a call, EOSS just got back and is having dinner. They had to retrieve their payload from near Lowman on highway 21.

They're all safe and sound. And probably hungry.

We should be getting more info soon.

Lesson Learned

L. Paul Verhage KD4STH
 

At conferences, we need to be better at staying in contact with each team. Perhaps one person should be assigned this task.

Glad to see EOSS went out with a team.

Re: Recoveries

John Kovac KM6GKF
 

Hope that last payload finds its way home eventually.

The line on ours broke about a foot below the parachute.  The only thing I can figure is that the line somehow snagged around a small part of he tracker, which was on the line below the parachute, and cut it when it came under tension. 

We were using the flight line sold by High Altitude Science.   I doubt that the line itself was at fault, but would like to know what others are using for flight line.

In spite of our failure, we enjoyed event very much.  It was great to meet all of you.






From: L. Paul Verhage KD4STH <nearsys@...>
To: GPSL@groups.io
Sent: Saturday, June 16, 2018 5:50 PM
Subject: [GPSL] Recoveries

The second launch site launched 5 balloons and three of them have been recovered. 

The first one broke loose of the parachute and took off without the tracker so we're writing that flight off. 

The last one landed nearing major road south of Boise and it appears to have been picked up by a stranger. This flight reach the 124700 feet and landed far west of the rest of the balloons. However, we were recovering the other balloons first and this one was out in the desert near. major road for several hours before we got there. We have a good bead on its landing site and search the area thoroughly. Since there's no balloon to be found I am assuming that a stranger picked it up.


Re: Recoveries

L. Paul Verhage KD4STH
 

I am using face in kite string in some places and woven nylon line I pick up at Wal-Mart.

I will try to get out to the Bay Area over Labor Day to do a launch. I have a 1,000 gram that would be perfect.

On Sat, Jun 16, 2018, 11:36 PM John Kovac KM6GKF <jkovac@...> wrote:
Hope that last payload finds its way home eventually.

The line on ours broke about a foot below the parachute.  The only thing I can figure is that the line somehow snagged around a small part of he tracker, which was on the line below the parachute, and cut it when it came under tension. 

We were using the flight line sold by High Altitude Science.   I doubt that the line itself was at fault, but would like to know what others are using for flight line.

In spite of our failure, we enjoyed event very much.  It was great to meet all of you.






From: L. Paul Verhage KD4STH <nearsys@...>
To: GPSL@groups.io
Sent: Saturday, June 16, 2018 5:50 PM
Subject: [GPSL] Recoveries

The second launch site launched 5 balloons and three of them have been recovered. 

The first one broke loose of the parachute and took off without the tracker so we're writing that flight off. 

The last one landed nearing major road south of Boise and it appears to have been picked up by a stranger. This flight reach the 124700 feet and landed far west of the rest of the balloons. However, we were recovering the other balloons first and this one was out in the desert near. major road for several hours before we got there. We have a good bead on its landing site and search the area thoroughly. Since there's no balloon to be found I am assuming that a stranger picked it up.


Re: Recoveries

L. Paul Verhage KD4STH
 

That's woven Dacron, not face. Dang spell checker.


On Sat, Jun 16, 2018, 11:42 PM L. Paul Verhage KD4STH <nearsys@...> wrote:
I am using face in kite string in some places and woven nylon line I pick up at Wal-Mart.

I will try to get out to the Bay Area over Labor Day to do a launch. I have a 1,000 gram that would be perfect.

On Sat, Jun 16, 2018, 11:36 PM John Kovac KM6GKF <jkovac@...> wrote:
Hope that last payload finds its way home eventually.

The line on ours broke about a foot below the parachute.  The only thing I can figure is that the line somehow snagged around a small part of he tracker, which was on the line below the parachute, and cut it when it came under tension. 

We were using the flight line sold by High Altitude Science.   I doubt that the line itself was at fault, but would like to know what others are using for flight line.

In spite of our failure, we enjoyed event very much.  It was great to meet all of you.






From: L. Paul Verhage KD4STH <nearsys@...>
To: GPSL@groups.io
Sent: Saturday, June 16, 2018 5:50 PM
Subject: [GPSL] Recoveries

The second launch site launched 5 balloons and three of them have been recovered. 

The first one broke loose of the parachute and took off without the tracker so we're writing that flight off. 

The last one landed nearing major road south of Boise and it appears to have been picked up by a stranger. This flight reach the 124700 feet and landed far west of the rest of the balloons. However, we were recovering the other balloons first and this one was out in the desert near. major road for several hours before we got there. We have a good bead on its landing site and search the area thoroughly. Since there's no balloon to be found I am assuming that a stranger picked it up.


Re: Recoveries

John Kovac KM6GKF
 

We will help you with whatever you need when you're down here, Paul.  We should be in town that weekend.





From: L. Paul Verhage KD4STH <nearsys@...>
To: GPSL@groups.io
Sent: Saturday, June 16, 2018 10:42 PM
Subject: Re: [GPSL] Recoveries

I am using face in kite string in some places and woven nylon line I pick up at Wal-Mart.

I will try to get out to the Bay Area over Labor Day to do a launch. I have a 1,000 gram that would be perfect.

On Sat, Jun 16, 2018, 11:36 PM John Kovac KM6GKF <jkovac@...> wrote:
Hope that last payload finds its way home eventually.

The line on ours broke about a foot below the parachute.  The only thing I can figure is that the line somehow snagged around a small part of he tracker, which was on the line below the parachute, and cut it when it came under tension. 

We were using the flight line sold by High Altitude Science.   I doubt that the line itself was at fault, but would like to know what others are using for flight line.

In spite of our failure, we enjoyed event very much.  It was great to meet all of you.






From: L. Paul Verhage KD4STH <nearsys@...>
To: GPSL@groups.io
Sent: Saturday, June 16, 2018 5:50 PM
Subject: [GPSL] Recoveries

The second launch site launched 5 balloons and three of them have been recovered. 

The first one broke loose of the parachute and took off without the tracker so we're writing that flight off. 

The last one landed nearing major road south of Boise and it appears to have been picked up by a stranger. This flight reach the 124700 feet and landed far west of the rest of the balloons. However, we were recovering the other balloons first and this one was out in the desert near. major road for several hours before we got there. We have a good bead on its landing site and search the area thoroughly. Since there's no balloon to be found I am assuming that a stranger picked it up.




Photos or videos?

John Kovac KM6GKF
 

Has anyone posted any stills or videos from their flights yesterday?

Re: Photos or videos?

L. Paul Verhage KD4STH
 

I have some video, but will have to edit it down first.


On Sun, Jun 17, 2018, 8:44 AM John Kovac KM6GKF <jkovac@...> wrote:
Has anyone posted any stills or videos from their flights yesterday?



Re: Photos or videos?

Hank Riley
 

I think it would be nice if people could post just a few casual still pics or movies of the prelaunch to launch time activity.  That might not need as much editing as actual in-flight video.

It's still pretty early for those who had to travel much of any distance to GPSL.  I guess it was a really long day for the EOSS crew.
_____________________________________________________________

I have some video, but will have to edit it down first.

line break video

John Kovac KM6GKF
 

Hank, thanks for your email about this. 

The GoPro pointed up in my payload box captured the moment.  Looking at it, I'm still not sure what happened.  Here is a link to the video:



11 of the 12 feet of line running from the parachute to the payload were still on the ground, so the line break had to occur near the parachute.  Also still on the ground, separately, was the Stratotrack, with a 10 inch or so piece of line still attached to the antenna loop. It's held in place by the stopper knot tied in the free end of the bowline knot attached to the parachute.  It  keeps the tracker from sliding down the flight line during flight.

If I had tied a bad knot at the parachute, it should have pulled the tracker and flight line down together on one piece of line.  If the line broke below the knot, the tracker should have stayed attached to the balloon by the stopper knot.   So I am puzzled by the tracker with a short piece of line still attached to it left behind as well. 

Any input appreciated.

Re: Photos or videos?

John Kovac KM6GKF
 

Here's a link to a few pre-flight photos, including the flight that never was.






From: Hank Riley via Groups.Io <n1ltv@...>
To: GPSL@groups.io
Sent: Sunday, June 17, 2018 11:31 AM
Subject: Re: [GPSL] Photos or videos?

I think it would be nice if people could post just a few casual still pics or movies of the prelaunch to launch time activity.  That might not need as much editing as actual in-flight video.

It's still pretty early for those who had to travel much of any distance to GPSL.  I guess it was a really long day for the EOSS crew.
_____________________________________________________________

I have some video, but will have to edit it down first.



Re: Photos or videos?

L. Paul Verhage KD4STH
 

My twitter account has some, Twitter.com/nearsys


On Sun, Jun 17, 2018, 7:24 PM John Kovac KM6GKF <jkovac@...> wrote:
Here's a link to a few pre-flight photos, including the flight that never was.






From: Hank Riley via Groups.Io <n1ltv=yahoo.com@groups.io>
To: GPSL@groups.io
Sent: Sunday, June 17, 2018 11:31 AM
Subject: Re: [GPSL] Photos or videos?

I think it would be nice if people could post just a few casual still pics or movies of the prelaunch to launch time activity.  That might not need as much editing as actual in-flight video.

It's still pretty early for those who had to travel much of any distance to GPSL.  I guess it was a really long day for the EOSS crew.
_____________________________________________________________

I have some video, but will have to edit it down first.



Just a thought

tony everhardt
 

After watching some Iridium Satellites which are sometimes called Iridium Flares because of the reflection that they give when rotating, what are the thoughts of possibly using a reflector of some type to the bottom of a balloon? A design similar to a disco ball. It would be pretty cool to visually see the balloon. Maybe far fetched and too much weight but just a thought.

N8WAC

Re: EOSS

Jim Biggerstaff N0TKN
 

Seems to me, since many of you have amateur radio licenses, amateur radio would be a great way to stay in contact when those darn cell phones fail  :)
73,  Jim   N0TKN

Presentations from GPSL 2018

goldsmith@...
 

Will anyone be posting the PowerPoint presentations from the conference?  Those of us who could not attend would love to see them.

Chuck / KG5CA
StratoCasters

Re: Presentations from GPSL 2018

L. Paul Verhage KD4STH
 

I will make a note to copy them off the PC. Then I need to find a place to post them online.


On Sun, Jun 17, 2018, 9:57 PM <goldsmith@...> wrote:
Will anyone be posting the PowerPoint presentations from the conference?  Those of us who could not attend would love to see them.

Chuck / KG5CA
StratoCasters

Thermos for Near space Habitat

L. Paul Verhage KD4STH
 

I outfitted a stainless steel thermos with a temperature and pressure sensor plugged into a flight computer I designed for rocketry. I am attaching the graphs I created from the data.

You can see the thermos only lost around 4% of its atmosphere and remained above freezing. I need to repeat this test a few more times and see if I can add a Styrofoam jacket to help maintain the temperature.

I am still working the photometer results. It appears I am seeing a strong signal for Raleigh Scattering. Am I seeking expert advice for input on my interpretation.

Re: Presentations from GPSL 2018

L. Paul Verhage KD4STH
 

I have the copies. I just need to find a place to post them.


On Sun, Jun 17, 2018, 10:09 PM L. Paul Verhage KD4STH <nearsys@...> wrote:
I will make a note to copy them off the PC. Then I need to find a place to post them online.

On Sun, Jun 17, 2018, 9:57 PM <goldsmith@...> wrote:
Will anyone be posting the PowerPoint presentations from the conference?  Those of us who could not attend would love to see them.

Chuck / KG5CA
StratoCasters

Re: Presentations from GPSL 2018

Hank Riley
 

I would think the GPSL files section would be a sensible place.

A very quick look with Google did not come up with an official limit on either individual or total megabyte limits, but in another groups.io I quickly found a 9 megabyte file.  The total bytes used at that groups.io was already up to 125 megabytes.

I'll try uploading 25 and 50 megabyte test files to one of my groups.io file sections and see if that's accepted.  Powerpoints can exceed that size with many included (excessively) hi-res photos, but that could be a start to knowing the limits for groups.io.

Paul, what is the largest powerpoint you have in the set?
_________________________________________________________________

<nearsys@...> wrote:

I have the copies. I just need to find a place to post them.

Re: Presentations from GPSL 2018

Hank Riley
 

20 Meg file accepted no problem.  Doing a 100 MB file now but with my garden variety DSL speed it could take 30 minutes or more.  At least Groups.io did not complain and is in progress now.

Note that there is no progress bar on the Groups.io upload page, so it may look as if there is a lockup but it will only report success when the whole file has been finished.  Also ISP download and upload speeds are typically not identical, and uploading is never faster and usually slower, often much slower.

Groups.io will likely be able to accept these powerpoints.