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Kevin: It's a Palomar Telecom RBC-700 series with the shielding kit installed. I have no reason to believe the audio is being induced at the controller. Milt: FM broadcast station is at the same site,

Hi Bruce, I think he was referring to noise being created by the internal fan in the 851. What power level do you have it set to? If you set the 851 to the lowest power output does the condition still

thanks, I switched supplies to my astron 35a bench supply and no change. There is, however, a fan in the repeater itself. Butch Bussen wa0vjr wa0vjr@... irlp 7135 allstar 56023 echolink 790800

Check to see if the popping noise coincides with when the switching power power supply DC brushless fan starts up. John

Where is the FM broadcast station relative to the equipment, local or distant? Is the 440 site with the 420 link a repeater with a 420 link receiver or is it a receive site with a link transmitter?

Thanks When I select R1 I get a msg that the tx is a mismatch and I have pressed the validate button? and wrote the codeplug and reset the station

Check the IF demodulator IC9 located near the ceramic filters on the TX/RX Unit (see below). Part number is TK14489. Hit it with a shot of freeze spray and see if your RX quality improves. If so,

Try disconnecting the audio line FROM the receiver, AT THE RECEIVER and shorting it toward the controller. Does the offending audio go away? ?is there a change in level? Then try shorting at the

Mick - The repeater is on a site-based combiner/multi-coupler arrangement. There are no cavities between that equipment and the repeater. Other users are not experiencing the problem. Yes, looked at

A few things I see here. You don't say anything about having a band pass cavity. Also, have you tried ferrites on the coax for all three ports of the duplexer? As for the audio lines, you need some

I put it back on original frequency and it is the same. Butch Bussen wa0vjr wa0vjr@... irlp 7135 allstar 56023 echolink 790800 new home phone 785 852-1102

I just got it, so don't know if it ever worked. As I said, when turned on cold, is o.k. for a little while. Butch Bussen wa0vjr wa0vjr@... irlp 7135 allstar 56023 echolink 790800 new home phone

I checked it on original frequency and acts the same. Yes, it is a used repeater. Butch Bussen wa0vjr wa0vjr@... irlp 7135 allstar 56023 echolink 790800 new home phone 785 852-1102

When I had it, before Butch bought it, it was on 451.1875 with a plus offset. And I did the program it for a 442.100 frequencies so I hope that didn't unlock the PLL. Chad Nelson WI9HF/WRPL979

I bought the thing off of eBay about a few months ago and never really tested it but then when I did, I just made sure it received transmitted. I didn't pay attention to how it sounded on which is my

Good thinking Joe. Basically, did it ever work? And if so, what changed to make it stop working right. Andy [email protected]> wrote:

Hi Butch, I'm not familiar with the 851, but my first thought would be is this a repeater that was used? If so, did you first test it on its original frequency? If you moved it too for it may be a PLL

I'm listening to the noise on the repeater speaker. As far as out of descriminator, I don't know, and not sure where to find that. I'm totally blind, so can't read the manual. The noise is transmitted

I think something in the receiver, it is clean when turned cold, noise comes on after a warm up. Service monitor has been las several days. Butch Bussen wa0vjr wa0vjr@... irlp 7135 allstar 56023

Transmitter off? And if so, take the fact that it's a repeater totally out of the picture. Because it's not a repeater at that point, it's only a receiver. So are you listening to this noise that