[Amps] $120 tube running a 1500 watt amplifier

[Peter Voelpel]

Nonsense.

That the GS-23B sells on Ebay for 120US$ does not mean that it costs that
price if bought new from the factory.
An even cheaper tetrode tube at the same power level is the GU43B.

Reason you find them cheap is that they were used in military equipment all
over the eastern countries and that the equipment is obsolete now.

If 3CX1200 tubes were used the same way you certainly will get them surplus
at the price of 813s.

I converted AL1200 amps to GS35 when they were available at 40US$ NOS.

73
Peter, DJ7WW

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of MIKE DURKIN
Sent: Montag, 20. August 2012 02:56
To: amps at contesting.com
Subject: Re: [Amps] $120 tube running a 1500 watt amplifier

IMD I would start with.

> Date: Sun, 19 Aug 2012 17:49:20 -0700
> From: vy1ei at arrl.net
> To: amps at contesting.com
> Subject: [Amps] $120 tube running a 1500 watt amplifier
> 
> OM power has come out with a new light weight amplifier, the OM1500, which
> runs a GS23B tetrode.   This tube is apparently a militarized version of
> the 4CX1600U Svetlana Tetrode. Now this tube sells on Ebay for $120, 
> which floors me as I'm running an Ameritron AL-1200 with the 3CX1200Z7 
> tube, which costs $1300 new. Some rate the 3CX1200 tubes as the 
> toughest tubes in ham radio.  The older AL-1200 tube, the 3CX1200A7 is 
> now selling for $1500, no small sum either (maybe its not being 
> manufactured anymore so what's why the price got jacket up?).
> 
> Now here is an amp running a single GS23B tube which can be obtained 
> on ebay for $120, one tenth the replacement cost of a 3CX1200A7. I'm 
> wondering what gives here and what's the value in these high end tubes 
> that some of us are buying.
> 
> Eric
> VY1EI
> 
> http://www.om-power.com/om1500
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