There is an excellent kpa1...@ghroups.io reflector where there has been
a lot of discussion about maintenance history. See particularly a post
by W3IP on replacing the final transistors - there have been a fair
number of such failures. I'm glad that Jim had a good experience - my
fairly early KPA-1500 is at Watsonville now after I started experiencing
RX insensitivity when in Standby or when my radio switched it back to
receive. I suspect a relay issue, but am looking forward to seeing the
repair report, and trust that Elecraft will have made any mods needed
while the amp was there.
73, Pete N4ZR
On 2/8/2023 10:22 PM, Jim Brown wrote:
On 2/8/2023 5:35 PM, Scott Manthe wrote:
I was one of the people that saw the KPA1600 run all day every day at
Dayton years ago, and have dreamed of that amp ever since. I know the
KPA1500 probably can't live up to that ideal, but are there issues a
potential buyer should be aware of?
I'm a near neighbor of Elecraft and people who work there. The KPA1600
never went into production. My KPA1500 arrived 6/29/19, and has never
given me the slightest trouble. It sees heavy use in HF CW, RTTY, and
some SSB contesting, always legal limit. It also sees heavy use during
6M E-skip season on WSJT modes, where I run it at about 1,200W. It's a
very nice amp, and has replaced one the 87As in my SO2R station.
My KPA500 made two expensive trips to the factory. The KPA500 mostly
got used on 6M in the same way as the KPA1500, at 600W, and a lot in
W6GJB's contesting trailer for HF county expeditions (CQP and 7QP). I
still own it for those reasons. Several contesting friends also own
them. I don't have a record of when I bought it.
73, Jim K9YC
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