On 10/2/2018 7:06 AM, Paul Christensen wrote:
My remote ste uses a new Elecraft KPA1500. So far, its PIN diode T/R
system has been flawless. However, it's distressing to see PA deck
temperatures reach nearly 80 degs. C in RTTY and FT8 modes.
Thanks for a great analytical and thoughtful post. I have no opinion on
the 87A's -- I have far too little experience with them nor knowledge of
their control system.
I had K6XX's KPA1500 for a few weeks while he was in Germany competing
in WRTC, and used it extensively on 6M running FT8. I also used it to
work him and all but five of the WRTC competitors on 20M. It worked very
well, but I felt that the fans and the firmware controlling fan speed
needed some work so that the amp don't fold back un-necessarily when
pushed on 6M, where it is least efficient.
73, Jim K9YC
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