On 11/22/2017 4:54 PM, Charlie Young wrote:
The two amps I repaired did not have Alphamax, so the software may be able to put it
into operate mode without the mode switch being in operate. I don’t know. No
experience with Alphamax.
All versions of the 87A require that you put it into Operate mode.
The manual for this amp is online in several places. Download it and
study it.
Alphamax ONLY adds auto-tuning, but you must train the amp for your
antennas for each segment of each band. And the amp gets unhappy with
indicated SWR greater than about 2:1.
73, Jim K9YC
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