[Amps] Which Vg2 for 4CX1500B SSB ?

[Steve Thompson]

On Saturday 24 July 2004 22:42, Peter van Daalen wrote:
> Hi all, I am new to this list and need some help.
>
> In various ( linear SSB ) 4CX 1500B PA designs I have seen various Vg2
> voltages from + 225 V until +300V.
>
> As far as I could recall, the lower the Vg2 the lower the IM3.
>
> What could be the reason for designing a ( SSB linear ) 4CX1500B circuit
> with  Vg2 at 300 V ?
> End of all, one of the reasons to choose for a 4CX1500B is the relative low
> IM3.
> What are pro's and con's of such high Vg2 ?
Higher power gain, if you need it.
Higher maximum output power. There are many who can't bear the idea of running 
a (clean) 1kW output when the tube is capable of 2kW. If you don't use 
AM/SSB, then the linearity doesn't matter.

Steve