View Full Version : Mechanical SSTV


harry dalek
04-10-2013, 09:02 PM
Hi i just invented a mechanical Glow drum SSTV 40 years to late but it replaces the P7 CRT so if your into classic SSTV this might be for you ...build is on the nbtv forum
http://www.taswegian.com/NBTV/forum/viewtopic.php?t=1318
and you tube site is
https://www.youtube.com/user/039dalekmoore2007?feature=mhee

some picutres here also
http://www.vintage-radio.net/forum/album.php?albumid=443

ChrisW6ATV
04-14-2013, 09:01 PM
That looks like fun. I remember reading about the SSTV receivers with P7-phosphor CRTs in the mid-1970s.

old_tv_nut
04-14-2013, 09:59 PM
Very interesting - thanks for showing this.

harry dalek
04-15-2013, 03:55 AM
That looks like fun. I remember reading about the SSTV receivers with P7-phosphor CRTs in the mid-1970s.

Yes i have tried to make a mechanical version of the classic SSTV i have no interest in the converters and pc sound card SSTV these were the days when if you wanted to watch SSTV you had to make your own TV .

The Tubes are pretty pricey these days so i came up with this idea after a few designs to see if i could make a mechanical one that acts like the P7 CRT .

harry dalek
04-15-2013, 04:29 AM
Very interesting - thanks for showing this.

No worries i am casing it at the moment for safe keeping ..
I am perhaps 40 years to late for this system to be of any interest to the computer set in SSTV but as far as i know its the only Glow screen type mimicking the P7 CRT....i know of 2 other Paper print out SSTVs from the 70s i am pretty sure there is no fax or SSTV using glow paint .
So in a way its a new type of monitor ,i have also tried it in NBTV and it works as well at higher speeds on a non moving screen, i suppose the time of the after glow can be controlled by the laser intensity as it still works .