Date   

Re: [Bo_RG] Re: Raspberry Pi

L. Paul Verhage KD4STH
 

I downloaded NOOBS and after much hair pulling, got copied to an SD card. It's now installing Raspberrian on the card while inserted into the Raspberry Pi.

Part of the process involved coping files from an old PC to a new tablet/laptop. I've discovered USB 3.0 or SS ports in the process. So now I need to get a 3.0 to 2.0 adapter cable so I can use my thumb drives and USB to Serial adapter.

Has anyone noticed that USB manufacturers don't know that the U stands for universal?

On Dec 23, 2017 3:28 PM, "Nolan Letellier nolan.letellier@... [Bo_RG]" <Bo_RG@...> wrote:


Are there any lights on the board?  If you have network cable to connect does the port light up?  If you have a pc with a card reader you can simply format the card and unzip a noobs installer from the raspberry web site. That should be enough to get to video usually.   



Raspberry Pi

L. Paul Verhage KD4STH
 

I would be interested in talking to someone who is using a Raspberry.

I bought one back in 2013 and used it a few times with its video out. Since then, I haven't used it. Now I have a tv with HDMI so I hooked that up to the Pi. The tv says there is no signal. I'd really like to get this Pi on the air so I can practice programming it.

The SD card was pre-programmed by Element 14 with Raspberrian. I can't look at the files on the SD card with my PC. I assume that's because the SD is formatted for Linux. I'm assuming the Pi is booting up, but have no way to prove that. 

I'll try switching back to analog as soon as I can find the old tv.

Thanks


Balloon Explosion

Joe WB9SBD
 

There was a big Balloon Explosion near Tuscon.
Trying to figure out what happened.
The one Gas truck was clearly marked Helium, But the second at least on my small monitor here I could not read what type of gas it was.

Could they be trying to use a Mix of H2 and HE to save gas costs?
I wonder what ratio of H2 & HE, how high can they go with H2 in the HE before it becomes explosive. Of course thats if they were using H2 at all.

If they were not using any H2, then what would make a percussive explosion?

Here is� News Link.

Joe wb9sbd
http://www.tucsonnewsnow.com/story/37102446/world-view-balloon-explodes-shakes-parts-of-tucson
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World View Hydrogen Failure

L. Paul Verhage KD4STH
 

World View, an Arizona-based company that wants to send people into near space on their balloons experienced an accident recently. 

They are using hydrogen gas inside their balloons. During the process of removing the gas from a balloon, the balloon ruptured and the gas rapidly burned. The "explosion" was heard miles away and apparently caused mild damage. Here's a link to the story, arizonadailyindependent.com/2017/12/20/video-shows-world-view-explosion-sending-flames-into-the-sky/



Fw: Re: Detecting Muons (And Not Morons) :)

BASE
 



----- Forwarded Message -----
From: BASE
To: "GPSL@..." ; 'L. Paul Verhage' nearsys@... [GPSL] ; Michael Willett
Sent: Wednesday, December 13, 2017, 2:02:02 PM EST
Subject: Re: [GPSL] Detecting Muons (And Not Morons) :)

I would get three and fly them in the "L" - shaped arrangement that we have used for years with the Geiger counters in our program.  Then you will get horizontal and vertical coincidences and can easily locate the Pfotzer maximum.

On Tuesday, December 12, 2017, 1:23:24 PM EST, 'L. Paul Verhage' nearsys@... [GPSL] wrote:


 

I recieved two of these a couple months ago for a test. They worked well on my ground tests and I'm planning to launch them on my next balloon flight. 

I have two so I can run them in coincidence mode. Only when a muon passes through both detectors, will it register as a detection. That will limit the BalloonSat to only detecting muons originating overhead.

On Dec 12, 2017 8:50 AM, "Michael mw@... [GPSL]" <GPSL-noreply@...> wrote:

Hello all,

Here is an article I ran across today, I am thinking this would be a
great project for HS kids here in Granbury to fly in our April balloon
flight.

Might be a nice project for GPSL 2018 as well!

http://electronics360. globalspec.com/article/10399/ build-your-own-muon-detector? id=%2D526774784&uh=964fe1& email=mw%40omsrc%2Ecom&md= 171212&mh=59c2c3&Vol= Vol12Issue24&Pub=49&LinkId= 1901126&keyword=link% 5F1901126&et_rid=500375382&et_ mid=83581000&frmtrk= newsletter&cid=nl

--Michael K5NOT


------------------------------ ------
Posted by: Michael <mw@...>
------------------------------ ------


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Re: Detecting Muons (And Not Morons) :)

BASE
 

I would get three and fly them in the "L" - shaped arrangement that we have used for years with the Geiger counters in our program.  Then you will get horizontal and vertical coincidences and can easily locate the Pfotzer maximum.

On Tuesday, December 12, 2017, 1:23:24 PM EST, 'L. Paul Verhage' nearsys@... [GPSL] wrote:


 

I recieved two of these a couple months ago for a test. They worked well on my ground tests and I'm planning to launch them on my next balloon flight. 

I have two so I can run them in coincidence mode. Only when a muon passes through both detectors, will it register as a detection. That will limit the BalloonSat to only detecting muons originating overhead.

On Dec 12, 2017 8:50 AM, "Michael mw@... [GPSL]" <GPSL-noreply@...> wrote:

Hello all,

Here is an article I ran across today, I am thinking this would be a
great project for HS kids here in Granbury to fly in our April balloon
flight.

Might be a nice project for GPSL 2018 as well!

http://electronics360. globalspec.com/article/10399/ build-your-own-muon-detector? id=%2D526774784&uh=964fe1& email=mw%40omsrc%2Ecom&md= 171212&mh=59c2c3&Vol= Vol12Issue24&Pub=49&LinkId= 1901126&keyword=link% 5F1901126&et_rid=500375382&et_ mid=83581000&frmtrk= newsletter&cid=nl

--Michael K5NOT


------------------------------ ------
Posted by: Michael <mw@...>
------------------------------ ------


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

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Re: Detecting Muons (And Not Morons) :)

L. Paul Verhage KD4STH
 

I recieved two of these a couple months ago for a test. They worked well on my ground tests and I'm planning to launch them on my next balloon flight. 

I have two so I can run them in coincidence mode. Only when a muon passes through both detectors, will it register as a detection. That will limit the BalloonSat to only detecting muons originating overhead.

On Dec 12, 2017 8:50 AM, "Michael mw@... [GPSL]" <GPSL-noreply@...> wrote:

Hello all,

Here is an article I ran across today, I am thinking this would be a
great project for HS kids here in Granbury to fly in our April balloon
flight.

Might be a nice project for GPSL 2018 as well!

http://electronics360.globalspec.com/article/10399/build-your-own-muon-detector?id=%2D526774784&uh=964fe1&email=mw%40omsrc%2Ecom&md=171212&mh=59c2c3&Vol=Vol12Issue24&Pub=49&LinkId=1901126&keyword=link%5F1901126&et_rid=500375382&et_mid=83581000&frmtrk=newsletter&cid=nl

--Michael K5NOT


------------------------------------
Posted by: Michael <mw@...>
------------------------------------


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

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Detecting Muons (And Not Morons) :)

Michael
 

Hello all,

Here is an article I ran across today, I am thinking this would be a great project for HS kids here in Granbury to fly in our April balloon flight.

Might be a nice project for GPSL 2018 as well!

http://electronics360.globalspec.com/article/10399/build-your-own-muon-detector?id=%2D526774784&uh=964fe1&email=mw%40omsrc%2Ecom&md=171212&mh=59c2c3&Vol=Vol12Issue24&Pub=49&LinkId=1901126&keyword=link%5F1901126&et_rid=500375382&et_mid=83581000&frmtrk=newsletter&cid=nl

--Michael K5NOT


Willunga High School 2017 Launch Data

L. Paul Verhage KD4STH
 

The First BalloonSats Without Borders flight took place in Australia yesterday. Here's a short reply about the flight.

I'm now in search of another place to launch. Is anyone from the other side of the Atlantic interested in swapping experiments to fly?
---------- Forwarded message ----------
From: "Mark Jessop" <vk5qi@...>
Date: Dec 7, 2017 2:06 AM
Subject: Willunga High School 2017 Launch Data
To: "Michael Osborn" <Michael.Osborn@...>, "L. Paul Verhage" <nearsys@...>
Cc:

Hi Michael, Paul,

Today's launch went very well! 

We launched right ahead of a cold front that was moving in, which threatened to make the flight challenging. During my drive to the launch site I encountered large areas of showers, however the Willunga area stayed clear for quite a while. 
The winds did start to pick up during launch preparations, but were not strong enough to make the launch difficult. We ended up with a total payload mass (combined across the 2x telemetry payloads, 1x Wenet imagery payload, and the BalloonSat) of approximately 1300g.

If I remember correctly, the data recorder was activated about 10 minutes prior to launch. Unfortunately I'm not sure either Michael or I got the exact time.

The flight proceeded pretty much as planned, with an average ascent rate of 5.2m/s. The payload's ground speed was observed to reach 200kph at some points during the flight. The balloon was cut away at just under the predicted burst altitude of 30km, in an attempt to bring the landing site closer towards the Dukes Highway, a major highway running through the region. The maximum altitude was 29949m. 

The descent rate was faster than expected, around 10m/s on landing. This turned out to be due to one of the payloads tangling with the parachute, causing it to not open completely. This brought the landing location a bit further away from the highway, and made the descent portion of the flight too fast for the lone chase team (me + friend) to get to the landing site in time to watch the landing. 

We arrived about 20 minutes after landing to find the payload in a large, recently cropped field, about 200m from a road. Shortly after we departed, the cold front arrived and the rain started - we had recovered just in time!

All the payloads are in good condition, in spite of the faster-than-expected landing. I've made a copy of the video and pictures off the balloonsat payload, and have also copied off the locally-stored Wenet imagery. 
I noted that the video camera filled up its 8GB SD card not long after burst (judging from the footage), so a larger SD card would probably be needed to capture the entire flight. 

The live Wenet imagery didn't perform too well, mainly because the only receiver was the one in my chase car, and that had lots of issues with mobile signal flutter. As the launch was in the middle of the week, we weren't able to have a stationary listener. You can see the impact of the missed packets on the live imagery page here: http://ssdv.habhub.org/VK5ARG  (scroll down to see the images which are missing many packets)
All the Wenet payload images were saved to SD card anyway, so I was able to recover them after landing.

I've uploaded telemetry information, some screenshots of the flight path, and a few images from the Wenet imagery payload to DropBox here:

I don't have a fast enough net connection to upload the video anywhere, so that will have to come later.

Cheers,
Mark Jessop
Project Horus


Re: Transmissions on Balloons

Bill Brown
 

Ah...thanks Leo, I forgot to mention RTTY. I used that a lot in the early days for telemetry before APRS came onto the scene. I also used an analog voice chip (any of the ISD series) which I could address various voice clips that I prerecorded into the device and used that to send down voice telemetry on FM. ARBONET flew a voice telemetry payload during a GPSL a few years ago. As I recall it said something like "Help I'm lost" when the GPS failed.
 
- Bill WB8ELK
 
 
 
 

-----Original Message-----
From: Leo Bodnar leo@... [GPSL]
To: GPSL@... List
Sent: Wed, Dec 6, 2017 12:18 pm
Subject: Re: [GPSL] Transmissions on Balloons

 
Few more modes:
Majority of UK flights use[d] RTTY
Some UK flights have used THOR16
Many flights use LoRa modulation now
There were flights on the continent using voice FM transmissions.  I had a B-class payload ready to go but it did not make it into the air, here is off-air test recording http://www.leobodnar.com/balloons/files/B-number-station.wav

Cheers
Leo

On 6 Dec 2017, at 17:22, wb8elk@... [GPSL] wrote:

  DominoEX, Contestia, JT9 and good ole fashioned CW to name a few.

From: 'L. Paul Verhage' nearsys@... [GPSL] <GPSL-noreply@...>

So aside from APRS, WISPR, Hellscriber, ATV, and SSTV, what other transmission types are used in balloons?


Re: Transmissions on Balloons

Jack Crabtree
 

PSK31 and CW!

On 12/6/2017 7:27:16 AM, 'L. Paul Verhage' nearsys@... [GPSL] wrote:

So aside from APRS, WISPR, Hellscriber, ATV, and SSTV, what other transmission types are used in balloons?

And by the way, what did the Romans ever give us?

I assume some ballons have carried did hunting systems as a backup in the past, but today?

Thanks


Re: Transmissions on Balloons

Leo Bodnar <leo@...>
 

Few more modes:
Majority of UK flights use[d] RTTY
Some UK flights have used THOR16
Many flights use LoRa modulation now
There were flights on the continent using voice FM transmissions.  I had a B-class payload ready to go but it did not make it into the air, here is off-air test recording http://www.leobodnar.com/balloons/files/B-number-station.wav

Cheers
Leo


On 6 Dec 2017, at 17:22, wb8elk@... [GPSL] wrote:

  DominoEX, Contestia, JT9 and good ole fashioned CW to name a few.

From: 'L. Paul Verhage' nearsys@... [GPSL] <GPSL-noreply@...>

So aside from APRS, WISPR, Hellscriber, ATV, and SSTV, what other transmission types are used in balloons?


Re: Transmissions on Balloons

Bill Brown
 

Hi Paul,
 
  DominoEX, Contestia, JT9 and good ole fashioned CW to name a few.
 
- Bill WB8ELK
 
 

-----Original Message-----
From: 'L. Paul Verhage' nearsys@... [GPSL]
To: GPSL@...
Sent: Wed, Dec 6, 2017 8:27 am
Subject: [GPSL] Transmissions on Balloons

 
So aside from APRS, WISPR, Hellscriber, ATV, and SSTV, what other transmission types are used in balloons?

And by the way, what did the Romans ever give us?

I assume some ballons have carried did hunting systems as a backup in the past, but today?

Thanks


Transmissions on Balloons

L. Paul Verhage KD4STH
 

So aside from APRS, WISPR, Hellscriber, ATV, and SSTV, what other transmission types are used in balloons?

And by the way, what did the Romans ever give us?

I assume some ballons have carried did hunting systems as a backup in the past, but today?

Thanks


Re: ATV

John Maca
 

We have been flying a DVB-T Digital camera/transmitter for our past couple of summer flights.  The unit is from HiRes (www.hires.com.tw) and the latest model is a DC-105.  The unit only puts out a couple mW on 434 MHz, so a very linear amplifier is required to get sufficient power (~300-500 mW) for the downlink.  I'm not the ATV/DTV guru in the group, but I think the digital config is 16 QAM at 4 Mbps data rate, although they have been tuning the config to get the best quality video from a spinning payload.  

Another cool payload we flew last August was a DMR repeater (stripped down Motorola XPR8300) that performed beyond expectations.  It only had ~15mW output as the final PA was blown and a mini-circuits amp was hacked in-line to get the 15 mW out.  The guy that supplied that payload is already working to build a lighter version.  

John
AB5SS


Re: ATV

L. Paul Verhage KD4STH
 

So ATV is still being flown. 

Does everyone feel they're flying ATV as much as it was in the past?

I've only flown ATV for one year followed by flying SSTV the next year. I gave them up after video cameras became cheap enough to launch. I've always liked their quality over ATV and SSTV.

On Dec 5, 2017 2:22 PM, <wb8elk@...> wrote:
The local university still flies ATV on 434 MHz as well as payloads that I still fly on occasion. I use the VM-70X TV transmitter by PC Electronics along with their Little Wheel antenna.
 
I have also been flying SSTV via the SSTVcam by Argent Data hooked up to a 2m FM transmitter.
 
- Bill WB8ELK
 
 
 
-----Original Message-----
From: 'L. Paul Verhage' nearsys@... [GPSL] <GPSL-noreply@...>
To: GPSL <GPSL@...>
Sent: Mon, Dec 4, 2017 6:43 pm
Subject: Re: [GPSL] ATV

 
If it's on the ham band of 5.8 gigahertz than I would still call that ATV.

Am I right then, and understanding it that there's not much ATV going on these days?

On Dec 4, 2017 9:41 AM, "Jack Crabtree" <jscra@...> wrote:
We flew our first ATV package on November 18, 1990 from Denver. A video of the flight is available at: https://www.youtube.com/watch?v=Gk6_WG71C-s&t=256s 
Now we use PiCams, Raspberry Pis, and 5.8 GHz Wifi Modems. Is this still considered ATV?
Jack Crabtree

On 12/4/2017 6:33:12 AM, 'L. Paul Verhage' nearsys@... [GPSL] <gpsl-noreply@...> wrote:


Does anyone fly amateur television anymore? What about digital? It seems to me that digital requires a PC and that's not practical on a balloon flight. Thanks



Re: ATV

L. Paul Verhage KD4STH
 

If it's on the ham band of 5.8 gigahertz than I would still call that ATV.

Am I right then, and understanding it that there's not much ATV going on these days?

On Dec 4, 2017 9:41 AM, "Jack Crabtree" <jscra@...> wrote:
We flew our first ATV package on November 18, 1990 from Denver. A video of the flight is available at: https://www.youtube.com/watch?v=Gk6_WG71C-s&t=256s 
Now we use PiCams, Raspberry Pis, and 5.8 GHz Wifi Modems. Is this still considered ATV?
Jack Crabtree

On 12/4/2017 6:33:12 AM, 'L. Paul Verhage' nearsys@... [GPSL] <gpsl-noreply@...> wrote:



Does anyone fly amateur television anymore? What about digital? It seems to me that digital requires a PC and that's not practical on a balloon flight. Thanks



Re: ATV

Jack Crabtree
 

No it is on the exclusive ham band segments on 5.8 GHz, AREDN software is used to put the modems on the ham.
Jack

On 12/4/2017 10:43:24 AM, 'L. Paul Verhage' nearsys@... [GPSL] wrote:

So tv off the amatuer band. I'm beginning to think ATV and SSTV isn't used any more. 

Perhaps the drop in high quality, light weight video recording equipment is a reason. Also, I'd like to think we're losing fewer payloads and can now wait to get the payload back to see the video. Or perhaps it's because we've grown use to seeing near space video and it's just less important.

On Dec 4, 2017 9:41 AM, "Jack Crabtree" <jscra@...> wrote:
We flew our first ATV package on November 18, 1990 from Denver. A video of the flight is available at: https://www.youtube.com/watch?v=Gk6_WG71C-s&t=256s 
Now we use PiCams, Raspberry Pis, and 5.8 GHz Wifi Modems. Is this still considered ATV?
Jack Crabtree

On 12/4/2017 6:33:12 AM, 'L. Paul Verhage' nearsys@... [GPSL] <gpsl-noreply@...> wrote:



Does anyone fly amateur television anymore? What about digital? It seems to me that digital requires a PC and that's not practical on a balloon flight. Thanks



Re: ATV

L. Paul Verhage KD4STH
 

So tv off the amatuer band. I'm beginning to think ATV and SSTV isn't used any more. 

Perhaps the drop in high quality, light weight video recording equipment is a reason. Also, I'd like to think we're losing fewer payloads and can now wait to get the payload back to see the video. Or perhaps it's because we've grown use to seeing near space video and it's just less important.

On Dec 4, 2017 9:41 AM, "Jack Crabtree" <jscra@...> wrote:
We flew our first ATV package on November 18, 1990 from Denver. A video of the flight is available at: https://www.youtube.com/watch?v=Gk6_WG71C-s&t=256s 
Now we use PiCams, Raspberry Pis, and 5.8 GHz Wifi Modems. Is this still considered ATV?
Jack Crabtree

On 12/4/2017 6:33:12 AM, 'L. Paul Verhage' nearsys@... [GPSL] <gpsl-noreply@...> wrote:



Does anyone fly amateur television anymore? What about digital? It seems to me that digital requires a PC and that's not practical on a balloon flight. Thanks



Re: ATV [1 Attachment]

Michael Hojnowski
 

On 12/4/2017 11:23 AM, Joe wrote:
What are ya using for a tranny?

Videolynx VM-70X 5 watt transmiter.

Mike/KD2EAT