Jay Maynard wrote:
On 2008-02-17, Jumpin Jahosaphat wrote:
Also you might try putting a 20-30 db attenuator on your radio connector.
If the signal remains then probably originating (ie mixing products)
outside the radio. If the interference goes away it is most liking
occuring inside the radio.

Good idea. One note: DO NOT TRANSMIT WITH THE ATTENUATOR IN THE LINE. You
WILL destroy it, and likely your transmitter's final amplifier as well if
you transmit for too long after destroying the attenuator.

While it may cook the attenuator, provided he's move on from vacuum
tubes, it's unlikely that a 12 or 24v driven transistor final is going
to burn up even if it's a complete mismatch.