[SMIRK] 6M Homebrew Amplifier for sale
Bill Cotter
n4lg at qx.net
Sun May 15 13:37:32 EDT 2011
For sale is a homebrew 6M 250W+ linear amplifier.
I took this amplifier out of service after completing the
modifications to my SB-200 for 6M. I purchased this amplifier a
couple of years ago and used it from time-to-time when the TS-60
barefoot was marginal. It requires about 5-10W drive to get the
full 250W output. The only issue I am aware of are the missing
Millen HV caps on the HV PS-to-Amplifier cable (see pix).
The present tube is an Eimac Y-391, a military specified and tested
variation of the 4CX300A tube. The socket is the SK-700. With a
socket replacement the amplifier could accommodate the 4CX250B,
4CX150, 3CX800 or any of the available Russian tubes.
The original circuit was a derivative of the 6M amplifier designs
from the 1957 and 1962 ARRL Handbooks.
http://web.qx.net/bcotter/forsale/6M%20250W%20Amplifier/
Price is $275 plus shipping from 40356. Combined weight is about
50lbs. Will be shipped in two cartons.
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Terms and understanding: This is a homebrew amplifier meaning that
is not a commercially supported product. There is no warranty or
guarantee, what you see is what you get. And, this amplifier can be
lethal if you fail to observe ALL safety precautions.
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