[Elecraft] Elecraft KX3 Owner's Manual now available (*preliminary*)

Jim Brown jim at audiosystemsgroup.com
Mon Mar 5 13:35:05 EST 2012


On 3/5/2012 9:43 AM, Lance Collister, W7GJ wrote:
> Looks like I will have to get a second USB cable for the KX3, and
> build some sort of interface that will plug into the KX3's custom mic
> jack to trigger the PTT.

Lance,

As I noted in a post on this topic to the WSJT list, VOX works just fine 
for WSJT signals fed to the line input with well-behaved rigs and 
well-behaved amps.  By well-behaved I mean having suitable delays 
between a TX line controlling the power amp and the beginning of RF at 
the output of the exciter, AGC within the exciter that prevents power 
spikes at the beginning of TX, and fast, dependable antenna switching 
that positively prevents hot switching. The Ten Tec and Alpha amps have 
done that for at least three decades, and so does the Elecraft KPA500.

I use nothing but VOX for digital and SSB modes with my K3s driving 
Titans during contests, and my KPA500 for casual operation.  During the 
recent ARRL RTTY Roundup and WPX RTTY contests alone I made nearly 3,000 
QSOs, and it's been at least 3-4 years since I replaced a vacuum relay 
in one of the Titans.

73, Jim K9YC


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