This picture shows a modulator, from a video recorder, 
it can be used as a simple signal generator.

A video modulator, "transmits" from the VCR, to the television set, normally
between channels 32 and 38.

If you put an LF signal into the modulator, you get a nice FM modulated output
a very handy thing, when you have to tune a down converter to 1.7 Ghz.

So get a hold of the next old VCR you see.

DATA

FRQ. AND OUTPUT LEVELS Frq Channel 32-38....: 532.750 - 638.850 Mhz. Max signal. 22.50 mv 2 Harmonic.............:  1065.500 - 1277.700 Mhz. Max signal. 2.25 mv 3 Harmonic.............:  1598.250 - 1916.550 Mhz. Max signal. 0.71 mv     BACK