2 meters:  

November 30
On arrival we worked on #3 and 4 receiver. Thanks to Ron who ordered the correct parts and figured out the mounting etc. We replaced all of the capacitors on the power supply and the audio board. The large initial filter can was 0 capacity. It was replaced with a larger capacity unit than was original. After checking the audio for hum we found that there was still some hum even though the power was now clean. We conducted many tests to find out where the problem was. Some pc board traces were resoldered. Many pins were cleaned and tightened. We now had at least 2 with reduced if not 0 hum from the power supply. At the same time a bad power connector was replaced on the chassis. 2 additional line cords were made up and installed so that it was easier to move receivers in and out to work on. Daisy chaining is down although a few more will still be added. #6 and #7 were attempted next. They had the worst hum. like # 3 and #4, all electrolytic capacitors were removed and replaced. pins tightened etc.
Ron has already done the receiver chassis #2 that he took home last trip. He is STILL waiting for the receiver circuit board from #2.
1 of the audio cards (I think it was from 5 but maybe 6.) was removed because the audio was fuzzy and distorted. On the last trip we also removed a similar card for a similar reason. We used the good one from the #2 receiver so we weren't short. Ron has a spare one so that he could have a good one to work on the receiver board with. We removed the audio card from #8 so that we could get #5 (or 6???) working. Presently #2 receiver at Rons place, and #8 (missing a good audio board. ) are shut off at the voter. Only #6 was controlled off at the phone cards when we started. I don't know how the rest were back on. #4 may need to be turned off as there was still some hum on the audio. (maybe not objectionable. )
It was discovered that the hum would change when moving your hand around the audio module. Also if you would ground the handle on the audio module to another audio module it would change the hum. It is thought that there might be some RF getting back into the receivers. A trip or two ago, we checked the power and swr on the main antenna it was good then. We did not have the Byrd meter with us so we could not check it out. We did put the power amp in standby and put the dummy load on the IPA and There was no real change in the Rf theory. ???? The power amp was put back on line again with no change in results.When the cabinet was closed there was a change in the hum heard.

The plan is for the next trip or trips is to finish the replacement of the capacitors. the checkout of the msf receiver. A power and antenna SWR check will be done. Hope fully by this time Ron will have gotten the receiver board #2. If this and the 2 other boards can be fixed by him, they will also be reinstalled. This work will probably take a while as help is ESPECIALLY scarce around the holidays. We hope that this trip has at least gotten us back on the map.????
THANKS TO CORA, LISA AND RON FOR THEIR GREAT EFFORTS.
From Carl K9ZOG

220:  

November 29

The repeater in now back on the air. The station logic module was replaced and the voice ID was repaired. The repeater is now transmitting PL.

From Curt WD9BIL

440:

November 15

  The backup Motorola repeater was put into service while the new ICOM machine is in the shop. We are using the old ACC controller sharing ID messages with 2 meters. The receiver sensitivity is a little low at the moment but this should be fixed very soon.

From Curt WD9BIL