Hello from Ten-Tec !
At 11:06 PM 12/12/96 -0500, you wrote:
>Hello. I am the proud owner of a brand new Centaur. It is very VERY nice amp
>- beautiful QSK on CW! It is a good size and looks nice sitting next to my
>rig. I've received good signal reports on SSB, AM, and even FM on 10 m.
>
>I have one question though ...
>
>When I drive the amp in CW mode with 150 ma grid current and around 500 ma of
>plate current, the wattmeter flys off the scale when you switch to "Forward".
> To get the forward down to 600 watts, you have to cut the drive way back to
>around 75 ma grid, 250 ma plate. I'm only driving the amp with 70 watts or
>so from my transceiver.
>
>Is my meter calibration off? Anyone else out there experience this? Any
>thoughts?
Yes, the wattmeter is out of calibration. If you don't have another
wattmeter to calibrate it against, tune it up for max. output on 20 or 40
meters into a dummy
load (you should be putting in a full 100 watts after tune-up). The adjustment
screw (small phillips head) is accessible from behind the amp. It's a small
hole
just below and left of the serial number.
Turn screw counterclockwise to adjust wattmeter downscale. Only turn it
maybe a half
turn at first, then adjust - it will go quickly from full scale deflection
to reading
under ! Also, don't adjust it with the amp keyed in transmit. Key down,
read, key
off, adjust, etc.
Thanks, and glad you're enjoying your new amplifier!
73, Scott Robbins W4PA, Ten-Tec
>
>Thanks
>
>73s
>
>Bob Dianetti, WB2JGH
>
>
>--
>FAQ on WWW: http://www.contesting.com/tentecfaq.html
>Submissions: tentec@contesting.com
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>Sponsored by: Akorn Access, Inc & KM9P
>
>
>
--
FAQ on WWW: http://www.contesting.com/tentecfaq.html
Submissions: tentec@contesting.com
Administrative requests: tentec-REQUEST@contesting.com
Problems: w9tw@contesting.com
Sponsored by: Akorn Access, Inc & KM9P
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