[Elecraft] [K3] JT65A output power variations

[Joe Subich, W4TV]

> But there is no reason to use VOX for any digimode. WSJT 
> supports PTT control. You have a fully wired serial cable 
> connecting the PC and K3 which allows you to use it. The K3 
> is not like other radios that requires a transistor switch 
> driven by the com port to do PTT.

This does not work if one has a logging program that is 
using the K3's RS-232 port.  As far as I know, no commonly 
used operating system permits more than one program to 
access a serial port at the same time which means that WSJT 
can not access the RTS/DTR lines. 

Note: it might be possible to use LP-Bridge or the freeware 
Enterlogic VSPE to "split" the hardware port into multiple 
virtual ports but there are some significant configuration 
and reliability issues with some logging software and port 
sharing. 

73, 

   ... Joe, W4TV 
 



> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Julian, G4ILO
> Sent: Thursday, November 12, 2009 9:34 AM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] [K3] JT65A output power variations
> 
> 
> 
> 
> 
> hb9ari wrote:
> > 
> > 
> > DATA A is perfectly usable with VOX:     i will migrate to this mode
> > 
> > 
> But there is no reason to use VOX for any digimode. WSJT 
> supports PTT control. You have a fully wired serial cable 
> connecting the PC and K3 which allows you to use it. The K3 
> is not like other radios that requires a transistor switch 
> driven by the com port to do PTT.
> 
> Just select the com port for PTT control in WSJT and select 
> RTS in the K3 PTT menu.
> 
> -----
> Julian, G4ILO. K2 #392  K3 #222.
> * G4ILO's Shack - http://www.g4ilo.com
> * KComm - http://www.g4ilo.com/kcomm.html
> * KTune - http://www.g4ilo.com/ktune.html
>