I finally got the repeater receiver to hear. Preselector was cleaned, still not good sensitivity. The receiver interface board went bad (was not letting power to LO/Multiplier board), as well as a weak detector; had spares on each. Will now open squelch at .17uv, no preamp, less than .1uV preamp (original GE). Link RX fine since fixed last week (cleaned preselector). If anyone ever has a problem with no or bad RX, check the interface board solder joints. I found out from one of the local hams, that they are notorious for going bad from temperature fluctuations over the years.
________________________________ From: terry dalpoas <[email protected]> To: [email protected] Sent: Saturday, August 29, 2009 4:39:10 PM Subject: Dead Mastr II Receivers Hi. I have a 70cm repeater that has 2 Mastr II's, 1 for repeater, 1 for link. Several months ago, everything worked great. I pulled it offline several months ago and had it in my shop until a few days ago. I fired it back up, and both receviers are dead. I can inject a 11.2 MHz signal next to C303 and it will hear it. The only adjustment that can be seen are the ones at the start on C406, 411, and 416. I have looked at the preselctors, and they look fine. It did get humid in my shop this summer. Has anyone heard of this happening?
