--- In [email protected], "John Everson" <[EMAIL PROTECTED]> wrote: > > Hi Guys. > > What is the power output of the UHF Micor (VHF really) exciter BEFORE > the 1st bandpass filter? What about AFTER the 1st bandpass filter? I > have the manuals, and I know what they say, but I am looking for some > real world data. > > I have got to be doing something wrong or all of my spare parts have > gone south on the shelf. I am not at my wits end but I can see that > it isn't too far away. > > Here is our story. > > We had this 75 watt UHF Micor repeater donated to us. The PA was bad. > The fellow said "that's it, I ain't fixing this thing again".We > thought we would fix it, tune it on a new channel, and donate it to a > fellow that is in need of new hardware. The PA was bad, I discovered > that all of my spares were junk, or near junk. Then, the tripler > takes a dump, replaced that... 1.7 watts out of the tripler, now we > are getting somewhere. I go and hookup the controller, intermittent > COS... cracked backplane solder joint, fixed that. A day has passed, > and now I have no output, again. I backtrack and find only 10-15 > milliwatts out of the exciter direct, less out of the 1st filter. I > have tried two other exciters, on the original channel elements, one > is dead, and the other has only 10 milliwatts out. How did Charlie > Brown put it??? ARRRRGGGH > > Am I missing something. Perhaps I have been messing with the GE stuff > too long. > > Thanks in advance. John
I FOUND THE PROBLEM!!! It was the lack of keyed A- that the exciter gets from the Time Out Timer! The conversion instructions I was using did not address that. I went to the schematic and rooted around a bit. Checked the powers and grounds....all present except for the keyed A-. Thanks for the response Lance. If you hadn't have motivated me to go back to the bench, I would have been on the couch watching ESPN talking about how lousy the Sacramento Kings are doing this year! 73 to all. John >
