[Elecraft] re: k2-100

[Don Wilhelm]

Ron,

You are correct that the T/R switch is bypassed when the KPA100 is set 
off in the menu.

If I recall your prior post, it behaved correctly with the cable removed 
from your KIO2 adapter.
Leave the KIO2 plugged in and the base K2 with its top cover off.  Then 
when it misbehaves, check the voltage on the 8R voltage rail - easily 
accessible at Control Board Q2 collector.  The normal voltage during 
receive is 7.5 to 8 volts, and if it is substantially lower, the K2 will 
not receive well.

That is the one signal that is carried to the KPA100 from the base K2 
that could reduce receive signal levels.

73,
Don W3FPR

ron wrote:
> more info. low rceive after keying also occurs with kpa100 shut off in 
> menu. should'nt the signal bypass the t/r switch in this mode. k1 and 
> k2 are ok with no power. problem still there with power unhooked to 
> kpa. have kat100 and kpa100 in seperate box. not using kat100 . signal 
> hooks to aux rf in on kat.
> ron
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