[Amps] The maximum amount of 811As and 572Bs in parallel

Steve Thompson g8gsq at eltac.co.uk
Mon Jul 24 02:40:19 EDT 2006



R L Measures wrote:

>    However, as to the statement that six tubes is well beyond the  
> limit, there have been many successful amplifiers built for 11m that  
> used 5 or more tubes.  Also, Tektronix oscilloscopes used a 10 tube  
> "distributed" amplifier to drive deflection plates.
Yes, but do you get the same useful output power from a distributed 
amplifier unless you have two antennas to feed? Doesn't half the output 
go into a terminating resistor?

Steve


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