Introducing ViewPort VGA Interface

The ViewPort VGA was introduced in the August 1992  73 Amateur Radio Magazine by John Montalbano, KA 2 PYJ.

The demodulator converts the FM-modulated slow-scan audio into an amplitude-modulated signal, which again is brought on digital form through an A/D converter an led to the PC-printer port.

The modulator never requires adjustment as it is based on a circuit controlled by a 4MHz xtal with presetable count-down ICs. The counters are preset by an 8 bit value arriving from the PC-printer port.

Available from:

• A & A Engineering,
• 2521 W. LaPalma, Unit #K,
• Anaheim, CA 92801
• USA,
• Phone (714) 952-2114,
• FAX (714) 952-3280

Blank SSTV Circuit Board	#189-PCB	$ 19.95
Complete Kit	#189-ENC	$ 169.95
Assembled and tested	#189-ASY	$ 229.95