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[Yaesu] FT990 power adjustment

To: <yaesu@contesting.com>
Subject: [Yaesu] FT990 power adjustment
From: w4fda@southeast.net (Preston Graham)
Date: Sun, 09 Aug 1998 12:50:51 -0400
Will, this is second hand info but I believe it to be true:
To adjust power levels:
VR 1001   160 M.
VR 1002    80 M.
VR 1004    40 M.
VR 1006    30 M.
VR 1007    20 M.
VR 1008    15 M.
VR 1009    10 M.

The adjustment for FWD ALC is VR 1017.
This info came from NO4J who has used it to increase the power on his
990. I don't know just how high you can increase the power with either
the internal switching supply or an external 12 volt supply, but as you
are adjusting, keep on the lookout for a sudden jump in current, that
might indicate a thermal runaway of the finals.
Good luck, Pres

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