[Elecraft] NG0R - K2+K60XV+XV144/222/432 - Setup Issue #3

[Don Wilhelm]

John,

A definite YES on #3 - this is your first order of business.  If you 
have a KAT2 in your K2 package, change the KAT2 R6 to 470 ohms.  If you 
do not, you will not be able to achieve the full 1 mW output from the 
K60XV.  The KAT2 does not have a tri-state driver for the VRFDET signal 
and its output will interfere with the power control circuits when the 
K60XV is in use.

73,
Don W3FPR

John Hoaglun wrote:
> 3. KAT2 modification for use with K60XV LP mode: In some cases the LM358
> op-amp on the KAT2
> can load down the K60XV's low-power RF detector (at the emitter of Q2),
> preventing the K60XV from
> developing a full 0 dBm (1 milliwatt) signal at the transverter OUT
> jack. To correct this, change R6 on
> the KAT2 from 47 ohms to 470 ohms. This resistor is supplied with the
> K60XV kit. R6 is on the bottom
> of the KAT2 control board, and can be changed without removing the KAT2
> module.
>
>
> Maybe Item #3 is the answer.  Thoughts?  I might try this after dinner.
>
>