[AMRadio] Legal limit AM amplifier, homebrew

[Eddy Swynar]

On 2011-11-13, at 11:10 AM, Rob Atkinson wrote:

> It is my understanding that 833s don't do well in the higher HF bands.
> I can't quote chapter and verse--I just recall being told that by one
> or two people I trust as far as their competence is concerned, i.e.
> they were long time techs and AMers who knew what they were doing.
> But, if you only care about the low bands (that's all I care about)
> then there's no problem.
> 

Hi Bob et al,

The 1989 edition of the ARRL's RADIO AMATEUR'S HANDBOOK features a grid-driven 833A amplifier...and you're correct, Bob: they recommend the tube for use no higher in frequency than 7.3-MHz...

~73~ de Eddy VE3CUI - VE3XZ