[AMRadio] Modern Equivalent of 35T and 203A


Vince Wesa Werber ka1iic at prexar.com
Wed Feb 2 23:29:45 EST 2005


Hi...

I just dug out my 1954 ARRL handbook and here's what I found;

the 35T has a 3G base 5.0 volts at 4 amperes filiment

maximum plate dissapation in watts 50... maximum plate current 150 ma

maximum plate voltage 2,000 volts...  maximum grid current 50 ma

It has an amp factor of 39

Other names for this tube include; 3-50A4 ( 3G base) and 3-50D4 and 35TG (with 
a 2D base)

Hope this might help
73
Vince
ka1iic



On Wednesday 02 February 2005 11:14 pm, Mike Sawyer wrote:
> I had a Stancor 202 transmitter that utilized a 35T in the final. The
> manual also said you could use an 811. That might help.
> Mike(y)
> W3SLK
> ----- Original Message -----
> From: "Crawfish" <crawfish at surfmore.net>
> To: <amradio at mailman.qth.net>
> Cc: <glowbugs at piobaire.mines.uidaho.edu>
> Sent: Wednesday, February 02, 2005 10:38 PM
> Subject: [AMRadio] Modern Equivalent of 35T and 203A
>
>
> Does anyone know what a modern equivalent would be for a 35T or 203A tube
> be? I have a 400-watt output transmitter from West Coast 1939 and 1946
> Handbooks that use the 35T( made by Taylor) as a buffer between a 6L6 and
> two HK254/100TH's, and the 203A's are push-pull modulators for same.
>
>                                                                     Joe
> W4AAB
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