[Elecraft] Isolating the KPA100 External Keying Line

[Tom Hammond]

Ummm... Vic...

Might be easier (esp. on the back) to move the K2 instead!  Heheh

73,

Tom   N0SS

At 04:26 PM 2/20/2006, Vic K2VCO wrote:
>Roy Morris wrote:
>>When keying my Alpha 99 via a shielded cable from the KPA100 J7 jack,
>>there is a small amount of stray RF getting into the SSB signal.
>>This RF is not present when the amp is used with either my 756 PRO2
>>or 706MK2G, and it is not present when using the K2 at 100 watts
>>barefooted regardless of band or mode.
>
>How do you know it's RF?  Maybe it's the magnetic field from the big 
>transformer in the 99?  K6SE claimed that he could hear hum 
>modulation on my signal when I operated my (unmodified) K2 3-1/2 
>feet away from an Alpha 86.
>
>You might try temporarily moving the amp farther away from the K2 or 
>getting the VCO magnetic shield mod from Elecraft.
>--
>73,
>Vic, K2VCO
>Fresno CA
>http://www.qsl.net/k2vco
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