[Elecraft] K3 TX light flashing when RTS=PTT

[Geert Jan de Groot]

> At Field Day this year, the K3 TX light started flashing when we loaded
> N1MM to use RTS=PTT to send .wav files.  This only occurs when RTS=PTT is
> set on the rig.   I thought it was a bug in N1MM but it also does this when
> using N3FLP's logger and the flashing corresponds to the polling rate
> (which N3FJP allows one to set).

Check whether RTS is active when you powered up the K3. Yaesu radios 
have a similar safety feature (cannot transmit if key is engaged during 
powerup, it avoids the radio immediately transmitting when the 
microphone is jammed under some electronics project or the cat sleeps on 
top of the morse key.

Geert Jan