[Johnson] Question on a Valiant.

Sun, 7 Jul 2002 20:31:51 -0400

Need the following additional information.

1) What is the plate voltage key down. You will need to measure this
away from the final circuit, on the "cold" side of the plate choke.
225 watts input with 330 mils would require 681 volts keydown. Is it
anywhere near 700?

----- Original Message -----
From: "Dutch WB7DYW" <[email protected]>
To: "Johnson@Mailman. Qth. Net" <[email protected]>
Sent: Sunday, July 07, 2002 8:54 AM
Subject: [Johnson] Question on a Valiant.

> I have a Johnson Viking Valiant that loads to 330 mills and has a
115 watt
> carrier, I have put new 6146B tubes in it and still no change.
> Rig will load to 150 watts with the Plate current running @ 400
mills but
> the finals seem to be taking it OK and do not cherry when running it
that
> high.
> I know that it should not be running that high but I wanted to get
it
> running to specs, I have checked the shunt resistor across the meter
and it
> is 5.1 Ohm's and everything looks normal, anyone have any ideas as
to why
> it's running so low???
> BTW I know there is no difference on the other end of the QSO
between 115
> and 150 watts I just wanted it to run as it is supposed to, any
ideas???
>
> Thanks & 73's Dutch
> Please visit my Collins web-site
> http://users2.ev1.net/~wb7dyw/
> And my new R-390 Page.
> http://www.qsl.net/wb7dyw
>
>
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