[Elecraft] K3 power drop

Richard Ferch ve3iay at storm.ca
Sun Feb 13 00:12:39 EST 2011


Are you using AFSK or FSK? If it's AFSK, when you set the meter to 
display ALC, how many bars do you see when you transmit?

A possible cause of the symptoms you observe is too low audio input in 
AFSK. The input level should be high enough to display 4-5 bars on the 
ALC meter. With sufficient drive, the requested output power should be 
reached immediately, but with lower drive, the K3's ALC will take some 
time to bring the power up to the requested level. You can adjust the 
audio drive with the MIC gain control (which controls LINE IN gain in 
AFSK A and DATA A modes).

73,
Rich VE3KI



KH6/AA4V wrote:

> I noticed today when starting to transmit on RTTY in the WPX test,
> although the power out from the K3 was set on 60 W, the rig only put
> out about 30 W for the first several transmissions then the output
> gradually rose to 60 W as selected. The antenna SWR is 1.5.
>
> Any ideas? S/n is 855 But has bEen updated to current specs.
>
> Steve KH6/AA4V



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