[BC] AM Modulation Monitor Off Air Monitoring

[Thomas G. Osenkowsky]

What about bandwidth? If the IF BW isn't broad enough you will see
undermodulation. I saw an IFR service monitor scope show an AM tx to be
undermodulated. I then realized it was NOT a true RF waveform I was looking
at, but a narrow IF waveform.

Tom Osenkowsky, CPBE

>A few decades ago I did that by feeding a mod monitor from the IF 
>output jack of a Hammarlund Super-Pro 600-JX with the AVC switched 
>off and the RF gain adjusted to maintain linearity.