[Elecraft] Amp connection - K3 and ACOM 1000

[Richard Squire - HB9ANM]

Jens, you are right: K3 + ACOM 1000 = excellent combination.

However, I highly recommend to anyone using a tetrode amp with a "swamped"
(i.e. untuned) input inserting of a lowpass filter BETWEEN the TX and the
amp. See for instance:

www.kk5dr.com/swampednetworks.htm

(inspite of the title of the article, problems can even occur with a very
well designed amp like the ACOM 1000)

or google "swamped input"+filter for further info.

VHF oscillations in the PA may damage the TX - ask a friend of mine who had
to repair his FT1000!

Better to be on the safe side...

73



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Richard - HB9ANM
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