Gentlemen, I really appreciate all of your responses. They contain a wealth of experience. I have studied and printed them for a reference. They have provided me a long term plan.
As for the UHF Micor questions, I have two Micors modified with everything working including ComSpec PL tone encode and decode with 3 pole active filter to remove the PL tone from my links and from the Micor speaker. The Micor receivers work great at -113 dbm for 20 db quieting. My Angle Linear preamp and 7 cavities, gives me a measured - -122 dbm for 20 db quieting with no measurable desense (except vary occasionally a slight desense from noise generated either from inside my Diamond X510MA antenna set screw connections, or from my LMR-400 coax, or from remaining cracked traces inside my Micor. When I take my Diamond antenna down again I will solder all of the screw Collet connections between the elements. The Micor transmitters work great thru the LLA Low Level Amp (1.6 watts output from the LLAs). The power control loop is saturated calling for more power with a 20 watt set point, so the problem is in the PAs somewhere. I have changed the "doglegs" (circulator assy.) also. The DC current jumps up once in a while about 4 amps DC from normal. One PA has one chip cap with a hairline crack. Sometimes the COS from the squelch board keeps triggering without a receiver signal (with the Micor Tx on and driven from another link). These are just the latest problems. I have gotten this far after a year of continuous work on the Micor and it's spare. I have learned a lot, but the Micors have finally worn me down. I have built my first repeater system with IRLP, Echolink, 2 meter remote base, 1-1/4 meter remote base, 0.7 meter remote base, Doug Hall RBI-1 interface, Arcom RC-210 controller, and autopatch/reverse autopatch. All of this is working reliably except the Micor. I have finally given up on the Micor. I want to do other things, like add a 4th remote base to CQ100 (virtual HF voip) controllable from my HT via DTMF thru my repeater. Therefore I have ordered a Kenwood TKR-850 repeater 25 watt (continuous) to replace the Micor. That should make everything reliable again, and I can concentrate on other improvements - hardline, antenna solder joints, remote base 4, and actually using my system. Thanks for all of your answers, and I welcome any more comments. I hope I answered all of your questions too. I am on www.QRZ.com under my call. Joe KC7GHT
