[Elecraft] P3 Transmit Display Failure

w1ie at jetbroadband.com w1ie at jetbroadband.com
Fri Nov 20 20:08:08 EST 2020


Carl, Chuck and Alan,,

Carl, your suggestions are good and logical ones for attempting to fix the PTT_KEY parameter problem , but in this case, this was a problem that was designed to be so by 
Elecraft. Here is Elecraft's solution to my problem:

" From your description of the issue, it sounds like you have USB.SAFE enabled for PTT-KEY.  This is a feature to prevent accidental transmissions when a computer toggles DTR and RTS lines during a reboot.  When USB.SAFE is enabled, it will keep PTT-KEY set to OFF-OFF until the radio receives valid serial commands over the serial connection.  It can be confusing, since the setting will show as OFF-OFF until it receives those commands.  You can toggle USB.SAFE off and on by tapping 1 on the keypad while viewing the PTT-KEY menu."

This was from Rob in support.

Chuck and Alan, as long as you don't tap the #1 key on the keypad while looking at the PTT-KEY parameter, this will not happen to you. Interestingly enough, the display will show UNSAFE and SAFE when in this condition and tapping the #! Will toggle the condition. I also think you have to have the KIOB module installed too. It sounds like it is USB specific and KIOA modules will not be affected (Ithink). 

Best regards

Jerry, W1IE




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