[Laser] ATV laser DX record

[F1AVYopto at aol.com]

Hello all 
I have found some schematics that could be the ones  used.
It seems they used a 20 MHz FM sub-carrier with NE564 ICs used as FM  
modulator and demodulator.
The RX uses a BPW34 loaded by a coil and followed  by a MOS FETs amplifier.
http://www.mydarc.de/dj1wf/Laser/QRV2.html
The FM  is the single way to reduce the scintillation effects via the AM 
demodulator  rejection.
With direct AM video, the pictures and lines synchronisation should be  
impossible to more than some Kilometers.
73 Yves