Steve Anderson wrote:
All OK, though I think I'm going to need some help with sync separation and a few other matters, we'll see...that's if it has to be tube based, semis, no problem...
Is Jean-luc's circuit useable here with sync separation Steve ? i know its harder here doing it with Valves but it will sure be interesting to see how it works out .
.One thing I have never done is a P7 CRT type SSTV monitor. I guess I should really do it so I can 'experience' what those in the 60s had to go through..
Yours a magnetic deflected or electostatic Tube Steve only tried it with a magnetic deflected tube on The Deep image monitor ,all i can say is do it it was once on my to do list as now this one ..better use of the tube than hiding away some where.
I have (so my last stock-check tells me), two DP7-5 CRTs, the same idea as P7 CRT and 3" diameter. Not as low voltage as a DG7-32 (DP7-32) but no real hassle either...as before with the DG7-32 NBTV monitors it'll be a hybrid.
Oh that answers my question electro static a lot easier to drive than the magnetic
[/quote]The only thing I'm concerned about is the quoted line-width at 0.7mm which means you'll lucky to get maybe 100 lines of resolution...but then again the old 72-line DG7-32 didn't seem that bad, however, this is a step-up from that...
Steve A.
If I do go ahead with this it'll be in the SSTV section...anyway, I've got a bucket load of other stuff to do, so don't hold your breath!
Well mentioned before i got 240 lines on the tiny vcr139A but at a slow 1.5 sec frame rate so i think 7 or 8 sec slow scan tv on your tube i bet would be ok