Re: [Amps] Power from Pair of Eimac 4 x 150 a / 7034?

["Carl" <km1h@jeremy.qozzy.com>]

There are glass upper and base, glass base and ceramic upper and all ceramic 
150A's. Only the all ceramic had the 250 ratings and more fins, Amperex had 
them marked 150A as well as 150A/7034.....same tube.
Carl



----- Original Message ----- 
From: "Fuqua, Bill L" <wlfuqu00@uky.edu>
To: "RMorris" <robrk@nidhog.net>; <qrv@kd4e.com>
Cc: <amps@contesting.com>
Sent: Saturday, December 27, 2014 6:20 PM
Subject: Re: [Amps] Power from Pair of Eimac 4 x 150 a / 7034?


>  EIMAC 4X150A/7034 have same specifications as a 4CX250B.
> The characteristic curves are identical. The only real difference is that 
> the
> insulator between plate and screen ring is glass and not ceramic. So it 
> would
> probably be best to give them a little extra cooling if you are pushing 
> them.
>  There are several different 4X150A tubes. Not all are 7034.
>
> 73
> Bill wa4lav
>
> ________________________________________
> From: Amps [amps-bounces@contesting.com] on behalf of RMorris 
> [robrk@nidhog.net]
> Sent: Saturday, December 27, 2014 5:12 PM
> To: qrv@kd4e.com
> Cc: amps@contesting.com
> Subject: Re: [Amps] Power from Pair of Eimac 4 x 150 a / 7034?
>
> On Dec 27, 2014, at 1:34 PM, qrv@kd4e.com wrote:
>
> > What is the probable output of an amp using
> > a pair of Eimac 4 x 150 a / 7034  tubes on 6M?
> Guess at 2X the plate dissipation (Max)...  2 X300 = 600.
>
> Build it so, later, you can plug in 4x250's or 350's.
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