[Elecraft] K3 power drop

[aa4v at bellsouth.net]

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 
Sent from my Verizon Wireless BlackBerry