Hi guys. We finally secured a "brck" type UHF amp for our hamtronics machine.
The Hamtronics puts out 7 watts after all the filtering into my Bird Termaline wattmeter. This needs to be knocked down to below 4 watts so as to not over drive the outboard amp. I had 2 options - one is to insert a pass-can into the TX line before the new amp. I have one at home. Tuned it to the correct frequency and it has an insertion loss of about 3db or so. The other suggestion from Hamtronics is to drop the V+ to the internal PA of the repeater to 11 volts or so (I can insert 3 or 4 diodes in series with the V+ to the PA to do this). But , in any case, we will need to make 2 patch cords. Is the length critical (i.e. electrical 1/4 wave or odd multiple thereof) work or will any convenienient short length work? We have some 9913 for this. Also, the way the repeater is configured right now, at the TX port of the repeater (before the filtering) there is a circulator. Should the circulator now be installed after the outboard amp? Or leave it where it is? Thanks. Ian VA2IR VE2RMP Repeater Group
