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Help I have a radio in my tweeter

Was listening at low levels last night and heard some offputting sound coming from one speaker - kind of a light scratchy sound - put my ear to the tweeter and found a lot of static and a barely perceptible sound of voices. As I listened further it became clear that my tweeter is picking up a radio station from somewhere. I don't own a radio so it's not in my house. Something is acting like an antenna.

I have a tube preamp and when I turn it off or take it out of the system and use the pre section of my integrated SS amp in its place, the issue disappears.

So with preamp as the apparent source of the issue, one at a time I changed out all tubes for others, changed the power cord, plugged preamp it into a different circuit, changed interconnects running from pre to power - still have the problem.

Not sure of next steps - any thoughts?
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Showing 1 response by ghostrider45

ghostrider45
449 posts
 
Sorry guys, but most of the time it's the audio gear at fault when it picks up a radio transmission, ham or otherwise. As long as the transmitter is operating legally (and most hams are sticklers for this) it's the responsibility of the audio owner to solve the problem, though most hams are happy to help.

Much audio gear is built with inadequate shielding and bypassing, which allows RF to penetrate and overload the circuitry. Use of exotic poorly shielded interconnects doesn't help either.

That's why the FCC did nothing when Philjolet called to complain.

I hold a ham ticket (WB5KKO), though I've been inactive for many years, so I know both sides of this problem.
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