I have a Micor TLD1693 amp, designed for the 150 to 162 Mhz range,
and am told that the amp will not operate at the 146 Mhz range, told
that componets have to be changed. Here is what I don't understand
about it, maybe someone can help expain it. Into a Cushman serive
monitor, I'm getting 100 Watts out of the amp at both 146.925 and
154.115 Mhz, keyed down the temperature is the same after a 5 min
keyup test, allowed to cool down for each test. I see no spikes or
spurs at either frequency. Granted this will be used on a repeater
and key down times can go much longer, but why would this amp not
operate at 2 meters, just cause Motorola says the specs are for 150
to 162. I've seen amps go from 138 to 174 with no problems, just a
matter of tweaking. So help me to understand what the difference
really is between the TLD1693 and the TLD1692 amps. Thanks.
Mathew
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