There are shield covers on the RX board that need to be pulled off and have the ground pins cleaned. I watched a Motorola service shop do that and the sensitivity came back. He turned to me and said "you'd have been forever figuring that one out." Don't ask me why, but I saw it work.
Chuck WB2EDV ----- Original Message ----- From: "Tim Sawyer" <[email protected]> To: <[email protected]> Sent: Monday, September 06, 2010 1:11 PM Subject: [Repeater-Builder] Micor UHF Sensivity >I have a Micor base that was manufactured in the ham band. Model is >C64RXB3196A-SP71. The receiver model number is TRE1241A-SP10 (420-450 Mhz). >It came with 4 channels all tuned up and on frequency in the ham band. But >the receiver is sensitivity is .72 mv for 20 db quieting on the best >channel and .9 on the worst. I went through the alignment procedure and >could not make any improvement. Obviously this is not meeting the .5 spec >and I was expecting more like .3 or so. > > So my questions is what should I do to troubleshoot this? Is there some > common Micor receiver failure parts or areas that I should be looking > into? > -- > Tim > :wq
