>
> ? The good news is that the 8171 does not need to be left on because it
> is "instant on". Thus, it makes no heat when laying in wait. When I
> ran one, I found that I needed it only occasionally. During the summer,
> I opened the window to let the heat escape. During the Winter, I used it
> to take the chill off of the room in the mornings.
>
Still, 550 watts of filament power and 120 to 150 CFM of airflow (Svetlana
data sheets) seem a bit hefty for an amateur amateur amplifier. Of course,
it looks like one of the 200 watt rigs will drive the 8170 or 8171 to 10 KW
output with a 400 Ohm grid resistor and a 9:1 autotransformer in the input
circuit. All in all ... not an amplifier really appropriate for amateur
service.
73,
... Joe Subich, W8IK/4 ex-AD8I
<W8IK@IBM.NET>
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