On 2/13/07, Ken Arck <[EMAIL PROTECTED]> wrote: > Have a customer with the following issue: > > Scenario: Amateur repeater (Mastr II) installed at a 100,000 FM radio > xmtr site. > > Issue: Very low level audio of radio station appears on Mastr II's > xmtr (yes, external controller). Repeater owner hasn't fully > explained what "very low level" means. But regardless..... > > Question: The only way I see this happening is due to some AM > component on radio station's transmitter. > > Thoughts? > > Ken
Saw you got a million replies Ken, but just joining in... we've fought with this demon out here before, too... Main thought: You must get them to find out where the audio is showing up first in the audio chain, then work backwards from there... standard troubleshooting... because as you've seen from the responses... it can be introduced a number of ways. Have 'em figure out if it's introduced in the receiver, the audio circuits of the M2, the input to the controller, etc... In our case, better (shielded - we actually used mini-teflon coax) cabling between the MASTR II Station and the controller, with all the grounds checked to be tied only to ONE end (ground loops are evil beasts), cleared up the problem... no more "new Country" in the background lightly. Nate WY0X
