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Date Posted by Category User IP

2017-09-10 (UTC)

K4MT

HF Amplifiers

97-82-143-165.dhcp.hckr.nc.charter.com

Johnson Thunderbolt HF Amp

I have a working Johnson
Thunderbolt amplifier for sale.
Working ones are hard to find.
This has new electrolytic caps and
great tubes. Will do 900-1000 on
SSB peak reading wattmeter with
only about 7 watts drive.
Keying T/R interface with a 6 DB
pad built in so you can drive it
with 30 watts safely.
This is a great amp if you have a
5 watt QRP radio and want a one
amp solution.
I also have 2 spare NOS Eimac 4-
400 that have been tested in amp
$500 and no shiping. Can meet half
way in states near NC. $650 with
spare tubes
Will trade for lighter weight KW
amp.
I have a picture of the T/R
Interface if you want to see it
let me know.

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