[Amps] The GU84B and GU78B tubes / some brief history

[Carl]

> Carl Wrote:
>
>>> By the way, no European manufacturer ever used triodes for RF amplifiers
>>> except before the time tetrodes were invented.

** I DID NOT write the above Ian, just what is below.

>
>>Thats why G3SEK had to develop those excellent tetrode boards before WW3 
>>started in Europe from all the crummy signals.
>>
>>Carl
>>KM1H

>
> Not quite... I originally developed the Tetrode Boards because of all the 
> crummy signals from 4CX250Bs!

** Of course I knew that! But it extends to many if not most other tetrodes 
of US and EU design.


> The differences between triodes and tetrodes are far less important than 
> the differences between individual amplifier designs, and the ways that 
> individual people try to operate them.

** And of course that gem from G2DAF and another equally as bad from VK or 
ZL or maybe both (-;

> 73 from Ian GM3SEK
> http://www.ifwtech.co.uk/g3sek

Carl
KM1H