> My first thought was to try another receiver like a portable
> Walkman, but you
> said you tried another receiver with the same results. So, not a receiver
> problem but I'd be sure with a third receiver anyhow. If both
> transmitters are
> doing the same thing, then it doesn't sound like that could be
> the answer.

Sounds to me like the signal going into your receiver is far too strong, and
putting the AGC around the RF stage into meltdown. Around 0.5Hz would be a
reasonable time constant for this.

Try putting an attenuator between your modulator and the receiver. Do you
have the modulator in an RF shielded box?

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