[Boatanchors] VHF linear amp?

[D C _Mac_ Macdonald]

FAA and USAF had linear amps (for AM) using ceramic tubes.  They can be modified to work on 2m or 200-400+ MHz.  They can be found as surplus although a bit rare.

73 de Mac, K2GKK/5
Since 30 Nov 1953
Oklahoma City, OK
USAF, Retired ('61-'81)
FAA, Retired ('94-'10)


________________________________
From: boatanchors-bounces at mailman.qth.net <boatanchors-bounces at mailman.qth.net> on behalf of Gary Peterson <kzerocx at rap.midco.net>
Sent: Wednesday, May 27, 2020 12:45
To: boatanchors at mailman.qth.net <boatanchors at mailman.qth.net>
Subject: [Boatanchors] VHF linear amp?

Ron,

The Johnson Viking 6 & 2 Thunderbolt used 4CX250Bs.  These are fairly scarce amplifiers.  I owned one, briefly.  A friend pestered me, incessantly, until I sold it to him.

There may have been other commercially made 4CX250B amps for amateur use.  I just can’t think of any.  I have plenty of FM broadcast pulls, sockets, chimneys, etc.  I used to replace the driver tubes, annually, even if they were still providing full drive to the PA.  You could always hombrew an amp.

Gary
KzeroCX

I've had a long desire to QRO a bit on
VHF 6, 2, or even UHF 70cm, and was wondering what type of boatanchor
amplifiers that use these tubes I might find? Ron VE8RT
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