[Amps] One GS-35B or two?

[Tony King - W4ZT]

Pat,

A single GS-35B will comfortably do 1500 Watts output, with headroom. 
There is no use wasting another tube and increasing the demand for 
filament current, plate current AND lowering your plate load impedance 
by using two tubes. A 100 Watt driver will be very comfortable with one 
tube without causing any damage to it. Just be careful to keep the plate 
voltage below 4KV and preferably no more than about 3600 Volts.

My favorite saying is this:
Tubes are like women...
If you feel that you must have two, keep them in separate houses,  and 
don't let them know about each other. If one isn't good enough for you, 
get a better one.

In other words, if one tube isn't enough for you, don't run two, get a 
bigger tube!

The next logical step above a single GS-35B isn't two of them... it is a 
single YC-156 ;)

73, Tony W4ZT


Patrick A. Thompson wrote:
> At no more than 1500 watts PEP output is there any great justification to
> run two parallel GS-35B's rather than one?
> 
> What I was thinking was that two tubes with a 100 watt exciter would be
> mostly damage proof from "operator" errors and have lots of headroom. But
> two tubes run the initial cost up somewhat and there could be a problem with
> balance between the tubes not to mention the blower size doubling.
> 
> Or is one GS-35B already hard to damage at US power limits?
> 
> Pat
> wa4tuk