In a message dated 3/28/2005 10:54:45 P.M. Central Standard Time,
W4EF@dellroy.com writes:
Good point, Gerald. A more likely explanation for the low efficiency
on 10 meters might be a combination of higher tank circuit losses
and wattmeter calibration error.
Still, I hear people talking about "soft" tubes a lot. I can understand
broadcast pulls have low filament emission, but aside from that
are there any other mechanisms which will result in diminished
output capacity from a tube like the 8874?
Mike,
W4EF........................................................................
.
----- Original Message -----
From: <TexasRF@aol.com>
>
>
>
> And this brings up the question: Why would a soft tube show up on 10m
> operation and not lower frequencies?
>
> 73,
> k5gw
Hi Mike,
I didn't intend to question the validity of soft tubes showing first at
higher frequencies. I have always been under the impression that this is true
but
just now wondering why it might be true or even if it is true.
73,
Gerald/k5gw
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