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Author Topic: Wassup with video?  (Read 584 times)
N1AUP
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Posts: 243




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« on: March 13, 2019, 09:03:46 AM »

Curious what hams are doing with video these days?

Back in the 80s when I was first licensed, there were ATV repeaters, and SSTV activity on the bands. 

These days, ATV is pretty much dead, and so is SSTV.

Considering how Youtube is on the forefront of internet technology, I'm wondering what hams are doing to stream video on the bands?

Is there anything out there?
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SOFAR
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Posts: 1418




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« Reply #1 on: March 13, 2019, 10:49:57 AM »

Watched some ATV from the early 90s, being 100% RF/off grid, found it very interesting, test patterns with call signs were cool.   
https://youtu.be/qY3adqhyi9g

Six meter club of Chicago has a weekly SSTV net, on their 2 meter repeater.
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KB2FCV
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« Reply #2 on: March 13, 2019, 11:43:58 AM »

I haven't seen any ATV for a long, long time. I remember a few club members that were into that back in the early 90's.

SSTV still seems to see activity, especially on 14.230 mhz. I've seen activity on 40m but not nearly as much as 20m.

One of the coolest things I remember doing with SSTV was an event on satellite AO-51 years ago where they transmitted a pic of something related to an anniversary of a space event (can't remember what). I remember dragging the handheld antenna out, a rigblaster and a laptop to download the SSTV pic (I think I have it saved somewhere).
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K0UA
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« Reply #3 on: March 14, 2019, 07:47:39 AM »

There is still a fair amount of SSTV on 20, I played with it  a while, about 20 years ago, but soon lost interest. I copied a bunch of pictures, and sent a few, but once mastered I lost interest pretty fast.
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K1FBI
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Posts: 202




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« Reply #4 on: March 15, 2019, 09:14:07 AM »

At last months local club meeting it was brought up that we should resurrect Slow Scan Night on our 2 meter repeater. It used to be a good time and just sort of faded out. SSTV seems to be alive and well on HF.
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WA2ISE
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Posts: 1273




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« Reply #5 on: March 15, 2019, 11:46:55 AM »

How about digital amateur TV?  Using regular flat panel HDTV sets as receivers, tuned to the cable channel that matches the 432MHz ATV "channel".  But I'm not sure where to find the digital encoders and transmitters.   Huh
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N1AUP
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Posts: 243




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« Reply #6 on: March 16, 2019, 05:06:54 PM »

https://www.tvtechnology.com/broadcast-engineering/ham-tv-operators-go-high-definition

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N1AUP
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« Reply #7 on: March 16, 2019, 05:24:51 PM »

https://kh6htv.com/
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N1AUP
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« Reply #8 on: March 16, 2019, 05:27:24 PM »

https://kh6htv.files.wordpress.com/2018/08/an-45-dtv-book.pdf
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DL8OV
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Posts: 1044




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« Reply #9 on: March 17, 2019, 01:46:51 AM »

Back in the mists of time I built an SSTV receiver that used a CRT with a P7 phosphor on it, old school SSTV. You can tell how long ago this is if I tell you that the output transistors on the sweep circuit were germanium rather than silicon devices.

Now, present day, it's all done on a PC or a phone and it works remarkably well once you work out what format/program is being used to send the message. Let KB9RLW explain:

https://www.youtube.com/watch?v=I7Vy63sfdjk

Peter DL8OV
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ONAIR
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Posts: 3722




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« Reply #10 on: March 17, 2019, 10:04:46 PM »

Some hams are now streaming via  www.Periscope.tv
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