[Elecraft] k3S usb software silenced sidetone and no rf out

[Joe Subich, W4TV]

"Safe" mode also works with a standard serial port and an unmodified K3.

73,

    ... Joe, W4TV


On 3/18/2018 12:41 PM, Don Wilhelm wrote:
> For those who have a K3S or a K3 that has been upgraded with the KIO3B 
> option, the "fix" for the problem of the computer 'wiggling' the DTR and 
> RTS lines when the computer is turned on is to download MCU 5.33 or higher.
> 
> There is a SAFE MODE to prevent just that - read the Firmware Release 
> Notes for MCU 5.33.
> 
> 73,
> Don W3FPR
> 
> On 3/18/2018 11:54 AM, Rick WA6NHC wrote:
>> With the homebrew circuit (opto-isolator X 3, one each for PTT, 
>> Data/FSK and CW) I'm using, I chose to take the CW keying directly to 
>> the key port of the K3 (in parallel with the hand key, plus there are 
>> paddles). That allows me to leave Config: PTT Off-Off.
>>
>> This has worked really well, except the OS wake up still keys the 
>> transmitter during the discovery phase of boot up.  That apparently 
>> can't be avoided (so I put the TX in test mode, if I'm in the shack).  
>> I use real serial ports as USB has more problems in QRO RF.
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to lists at subich.com