Lee,
Check this website out. Are you wondering about the resistor for the tetrode
board
or for an attenuator? The website doesn't have any info on Ians board but has a
good bit
of other info about a grid driven amp. Look at the planar type resistors the
builder used
for the attenuator network. They're high wattage types.
http://www.xs4all.nl/~pa0fri/Lineairs/Frinear1500/FRI1500eng.htm
Best,
Will
*********** REPLY SEPARATOR ***********
On 8/22/06 at 2:12 PM Jennings wrote:
>I am thinking of a passive grid driven configuration for a GU74B/Tetrode
>Board amp. I could parallel a bunch of 2W carbon resistors to make up 50
>ohms at 100 watts, but the physical size worries me. Has anyone got an
>"off the shelf" solution and source of supply or suggestions?
>
>Lee ZL2AL
>
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