[Elecraft] K3s in the Field & Beta 3.10

[Don Wilhelm]

Steve,

There was a 'safety valve' added to the K3 a while back that prevented 
RF if the K3 was turned on while PTT or a closed Key was found.  
Apparently, the timing of both the K3 power on and your PC boot were 
close enough to activate that 'safety valve', but in an unusual manner.

Note 'safety valve' is a label of my invention - you will not find that 
term in the manual.

73,
Don W3FPR

Steve Ellington wrote:
> Yesterday I changed PTT-KEY to OFF- DTR so Logger32 would be able to key via 
> RS232. Worked great however this morning, with the K3 turned on, I booted 
> the PC. During boot, the K3 emitted about 3 sidetone beeps. Later when I 
> tried to key the K3 via direct paddles I got zero power out. Turning the PWR 
> knob revealed that Power had been reduced to the zero setting. I turned up 
> the PWR via the knob and all was well. I guess this proves the importance of 
> first booting the PC then turning on the K3.
>   
>