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I picked up a Fortop TVT1300 locally, a 24cm FM ATV TX.
It has two xtal positions both empty for two tx channels.
Does anyone know anything about this tx? are they 96mhz xtals?
If you have one of these I would appreciate if you could check the xtal values.
Better still does anyone have a manual / circuits etc.
I've just obtained one and it's got 2 crystals fitted; 96.00000 and 93.70833 MHz. At the moment I don't know what the actual TX frequencies are as I haven't had a chance to fire it up, but according to the paperwork it a x12 multiplier. That gives frequencies of 1152.00 and 1124.50 MHz respectively.
I'm not sure at the moment whether there's another internal oscillator which mixes with the crystal generated signal to give the final o/p, but I won't know until I fire it up and check the output frequency.
I'll post the info on here when I've checked it, assuming it works.
No problem. I hope the info is of some use.
I seem to remember reading the crystals are 5th overtone but can't remember whether it said series or parallel resonant. I'm sure for that frequency though it will be enough just to specify the crystal frequency required, i.e 96.xxxxx 5th overtone. Maybe someone else can comment if need be.