A basic monitor for slow-scan television 1974

Forum for discussion of SSTV topics. Slow Scan television (SSTV) is a picture transmission method used mainly by amateur radio operators, to transmit and receive static pictures via radio in monochrome or colour.

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A basic monitor for slow-scan television 1974

Postby Harry Dalek » Tue Jan 30, 2024 7:09 pm

I think a poorer scan has been posted in the past.
Attachments
EA 1974-05 May_0039.jpg
EA 1974-05 May_0040.jpg
EA 1974-05 May_0041.jpg
EA 1974-05 May_0042.jpg
EA 1974-05 May_0044.jpg
EA 1974-05 May_0095.jpg
The electromagnetic spectrum has no theoretical limit at either end. If all the mass/energy in the Universe is considered a 'limit', then that would be the only real theoretical limit to the maximum frequency attainable.
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Re: A basic monitor for slow-scan television 1974

Postby BruXy » Wed Jan 31, 2024 3:47 am

Hi, cleaned a bit and joined to one 27 MB PDF:

https://bruxy.regnet.cz/hamradio/SSTV_L ... vision.pdf
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Re: A basic monitor for slow-scan television 1974

Postby Steve Anderson » Wed Jan 31, 2024 1:09 pm

Yes, it was I that posted the previous version. I don't know where I got that version from, but that was it, i.e. I didn't scan it. Thanks for the cleaner version.

Steve A.
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Re: A basic monitor for slow-scan television 1974

Postby Harry Dalek » Wed Jan 31, 2024 6:12 pm

No worries just came across it reading the EA back issues .
This ones a bit different in a dual transistor valve job ,i recall our televisions were similar in this era mix .
I have not come across a electrostatic P7 i still have a another magnetic version
The electromagnetic spectrum has no theoretical limit at either end. If all the mass/energy in the Universe is considered a 'limit', then that would be the only real theoretical limit to the maximum frequency attainable.
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Re: A basic monitor for slow-scan television 1974

Postby Steve Anderson » Wed Jan 31, 2024 6:53 pm

I do have a few 'P7' type electrostatic CRTs here, a similar tube to the DP7-32 shown above is the DP7-5, though it does require somwhat higher voltages...it is an earlier tube.

I've had it for many years, one day I should fire it up...also a 3FP7, but that does require a lot of volts, 3kV as I recall. Similarly a pair of 5ADP7s...one day...

Steve A,
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