[Elecraft] NZ7C: K2/100 & LGD MP-11 questions
Charles Bland
[email protected]
Wed Aug 28 10:48:01 2002
OK, then try this....
After initiating a K2 tune cycle, adjust the power control. The K2 will
(for now...I think this is going to change) change its output from
20W. See if that doesn't cause something to happen (LDG tune
cycle, smoke, sparks, etc...... :-) )
I would set the power output to 30W before initating the tune cycle
so that the power doesn't jump from 20W to, say......, 90W.
Chuck
Note [email protected]'s stunning brilliance and Chuck's apt
reply (gack!)
From: <[email protected]>
Send reply to: <[email protected]>
To: Elecraft <[email protected]>
Subject: Re: [Elecraft] NZ7C: K2/100 & LGD MP-11
questions
Date sent: Wed, 28 Aug 2002 10:10:10 -0400
> > Regardless of whether the LDG is on
> > auto or not - the K2 will not initiate a tune.
>
> The LDG tuners initiate an auto tune by sensing a high SWR. The K2's only responsibility is to put out an RF carrier. If the SWR presented to the K2 by the "untuned" tuner is very high it may be possible that the K2 (in order to protect its output stage) does not put out enough RF in order for
the tuner to sense the need to retune. I'm not sure why you needed some special connection in order to use it with the 756PRO unless it was the same sort of problem.
>
> You might try placing the K2 in the CW mode and keying it with a straight key to get enough power for the tuner to initiate an auto tune rather than using the K2's tune function (which cuts the output power back). Try it with perhaps a 5 watt output setting on the K2.
>
> This by the way is one of the benefits of the SGC tuners. They sense RF frequency and phase in addition to SWR in order to tune.
>
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