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I am the kind of person who likes to test things myself so I know exactly what it says and what it's doing. And if someone would offer me a free DB 224 I would jump on it in a second! Chad Nelson

The G7 is a good performer but hates lightning...lost several in the 80s to Zap the lightning god...installed properly it can out do a DB224...opinions vary but I'm basing mine on 40 years of dealing

I was asked to go out the site in the attached picture yesterday to help troubleshoot. Before I go on, let me describe the site. Although there are numerous antennas on the tower, we are the only

Thanks i have changed the tx freq to 151.0 validated and rebooted? but still no transmit so I may have a hardware problem

Hey Jeff! Audio is tapped off of the discriminator in the Tait, ahead of all the filtering. Feeds a Palomar Telecom controller. The broadcast audio is then propagated out of all transmitters (420 and

I've gone as far as I can with this thing. I'm happy to pay someone to fix this thing. I'm totally blind and although I can check and align things with a service monitor, I can't replace parts. When

Then my guess is, it actually IS a high split transmitter and the VCO is not locking as low as you'd like it to (technically OOB). Change your TX frequency to something above 150 and see if it starts

Do you want VHF or UHF. We have several of both also XPR8400, which we have replaced with 5700's. We would probably sell some for about $400 - $500 each, all working condition. Charlie ADAMS K3HKZ

Probably more questions than answers at this point: 1. If I’m understanding correctly, when the 440 receiver is active, you hear the FM audio on the 420 link transmitter, right? Do you also hear FM

yep, I thought of that after I replied. I have fan set to temperature control, and noise is there when fan isn't running. Power is set to ten watts, but I have transmitter turned off. Butch Bussen

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