Archive for category: Amateur Satellite

Thoughts on SSTV…

September 19, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

My recent playing with SSTV images coming from ARRISSat-1 have made me think a bit more about SSTV. I used two different applications to decode SSTV images (MMSSTV on Windows, and Multiscan on OS X), and got slightly different results in terms of performance from each. This leads me to ask “just what are the […]

NOAA 19 recording, and atpdec…

September 14, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

Some of you may remember that I wrote my own APT satellite decoder. I ran across someone else who did the same: ATPDEC by Thierry Leconte (F4DWV) It has the same basic philosophy as my own crude efforts: hand it a WAV file, and it will find and produce the APT imagery from inside it. […]

Morning ARISSat-1 SSTV

September 11, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

I overslept this morning, and woke up a scant 10 minutes before this morning’s good pass of ARISSat-1 was to begin. Still, all I had to do was go out to my car, grab my Arrow, and my HP laptop, and my trusty VX-3R, and I should be able to make it. I started pulling […]

On ARISSat-1 SSTV images…

September 8, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

I’ve been trying to get out and record more ARISSAT-1 passes, in the hopes of getting some nice SSTV images. If you follow @brainwagon on twitter, you are likely to see some of the more mundane images that I’ve been getting thusfar. I keep hoping to snag some truly great ones, but thus far, the […]

More ARISSat-1 recordings…

September 2, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

Got a short recording of ARISSat-1 this evening. Not 100% sure, but it may have transitioned into low power mode at the end of this recording, I seemed to lose carrier and couldn’t reacquire the satellite. In any case, here’s the recording, and the one decoded SSTV image (not too exciting, but pretty clear). ARISSat-1 […]

ARISSat-1 and the ISS over California

September 2, 2011 | Amateur Radio, Amateur Satellite, Amateur Science | By: Mark VandeWettering

I got a tweet from twisst, the ISS pass prediction robot yesterday indicating that I’d have a good pass around 8:25PM. While I am fighting off a cold, the weather was beautiful and nice, and so I ran some path predictions to see what the path looked like, and also checked on ARISSat-1’s path to […]

ARISSAT-1’s battery appears to be failing quicker than expected…

August 14, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

I didn’t get a chance to record any more ARISSAT-1 data this weekend, but I did catch up on some reading. Apparently, it’s batteries are giving out quicker than expected: the voltage is dropping low enough to cause a reset when the satellite goes into eclipse each orbit. If you were thinking of grabbing some […]

AMSAT SSTV gallery

August 10, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

I haven’t had the chance to do any ARISSAT-1 SSTV lately, but I thought I’d snoop over to their gallery to have a peek. Some good pictures are being received, but it appears that some earlier pictures are simply being removed: two pictures that I submitted to them earlier are no longer available. Their comment: […]

Morning pass of ARISSAT-1

August 5, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

Success! I managed to record the pass of ARISSAT-1 from my front yard this morning. I woke up around 7:00AM, and tried quickly to get ready. I pulled on some clothes, then I dug out my handy Arrow antenna (a hand held dual band Yagi antenna for 2m and 70cm) and my tiny Yaesu VX-3 […]

Antenna? Who needs an antenna?

August 4, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

Drew, KO4MA, didn’t let a little thing like the missing antenna on ARISSAT-1 keep him down. He aimed his antennas at the satellite, and recorded the following: What’s goin on here? Drew has a pretty good antenna setup, which includes an M2 CP42 for the uplink. That provides about 16.8db of gain. Since the ARISSAT-1 […]

ARISSAT-1 Update…

August 4, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

Okay folks, I’m sorry, I promised that I’d try to stay up late enough to record some of the first passes of ARISSAT-1, but physical need for sleep outpaced my natural enthusiasm and curiosity, and the first good pass found me sound asleep. Through some perverse quirk of fate, all the best passes of the […]

ARISSAT-1 is off to a bumpy start…

August 3, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

First, the good news: ARISSAT-1 is floating free in space. I urge hams to listen for its 2m downlink on 145.950 to see if you can hear it. There is also a CW beacon on 145.919 and a special BPSK-1000 telemetry downlink on 145.920. Now, the bad news. It appears that the UHF antenna was […]

Balloon Launch Photographs Discovery Launch from “Near Space”…n

March 2, 2011 | Amateur Satellite, Amateur Science | By: Mark VandeWettering

A couple of weeks ago, I blogged that a group of students were planning to photograph the final launch of the shuttle Discovery from a high altitude balloon. What’s remarkable is that they succeeded. Click the link and surf on over to find what a couple of Android phones can do at 100K feet.

Students to photograph Discovery flyby at 100,000 feet | TG Daily

February 22, 2011 | Amateur Satellite, Amateur Science, High Altitude Balloons | By: Mark VandeWettering

Interesting. A group of students are launching a high altitude balloon “some miles” from the launch site of the Shuttle Discovery at Cape Kennedy, and will be streaming the video of the event as recorded by a pair of Android phones on board. I suspect that any video so streamed will be less than stellar, […]

Bummer! No Wednesday deployment of ARISSat-1

February 13, 2011 | Amateur Radio, Amateur Satellite | By: Mark VandeWettering

The Southgate Amateur Radio News is reporting that ARRISSAT-1 will not be deployed during an EVA from the ISS this week as previously planned. It now appears that it will remain on board until July. No Wednesday deployment of ARISSat-1 | Southgate Amateur Radio News. 3. AMSAT learned on Friday morning, 11 FEB 11 that […]