The K3/0 Zero as a Remote Frequency knob/PTT for ANY radio with CAT

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The K3/0 Zero as a Remote Frequency knob/PTT for ANY radio with CAT

Gerry Hull
Hey Folks,

In my endeavor to find a way to frequency control a Flex using a K3/0, I
tested a couple of solutions.  Nothing worked exactly to my needs.

Then I thought of a very cool idea.   Our friend who developed Skimmer,
VE3NEA, also has a rig-control library called OmniRig.

With a little software glue, I could use OmniRig to build a CATMapper --
not for everything, but for all frequency-related functions and for PTT!!
 It's a little Windows desktop app.

Well, I did it and it works very well.

For you guys trying to do K3/0 + Flex,
- Fire up the Flex with SmartSDR
- Go to SmartSDR-CAT, and ensure you have a COM port for CAT -- and note it.
- Connect your K3/0 to your PC via the USB connector on the side near the
Power connector.
Check your device manager for the COM port number of the K3/0.

Download OmniRig and install it if you don't have it already.
http://www.dxatlas.com/OmniRig/Files/OmniRig.zip
(if you have Windows 10, unblock the app by right-clicking on Zip, choose
Properties and check the Unblock box).  Run the installer.

Download my little app:  https://files.w1ve.com/catmapper.exe
  (if you have Windows 10, unblock the app by right-clicking on exe, choose
Properties and check the Unblock box).   You can run the program from
anywhere.

You press the configure button and configure for your two radio types:
Elecraft K3 for the Mini or a K3, and whatever you want, like SmartSDR for
the Flex.  Make sure to match baud rates, etc.   I recommend a 250ms poll
time.

You should start the app once the K3/0 is connected to the PC, and your
other radio application is connected and running (like SmartSDR-CAT).

This will 100% work with RHR's desktop app -- EVEN WITH a logger like N1MM+
running.  If you want to use with RHR app, Turn off support for K3/0 in the
RHR app -- this replaces it.

This solution will work well with desktop-only virtual radio solutions that
don't have a knob, as long as CAT for the remote radio is exposed locally
on the computer.

The K3/0 is an amazing piece of gear.  I just wish they had not stopped
making it.

73,

Gerry Hull, *W1VE  *Hancock, NH USA
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