Tobias (DH1TW)

2 minute read

At our Contest Station ED1R we have on each highband 3 Yagis available. In 2012 I built 4 high power Stackmatches in order to switch and combine them properly. Since I never liked the way of WX0B’s stackmatch controllers with the rotative knob, a microcontroller and button based solution was the answer. After a few contests the solution has proven it’s reliability and comfort.

The platform

My good friend Pablo, EA4TX suggested to reuse his ARS Interface box, instead of developing everything from scratch. A welcome offer! Pablo’s ARS box, which is a USB powered, enhanced replacement/addon control for any kind of rotator, brings everything I needed:

  • Microcontroller with USB Interface
  • 5 Relay based output ports
  • Available Input for Pins
  • LCD Display
  • 4 Buttons

Stackmatch with Controller

So all I had to do was “just” to write a new Software, adding two plugs and connecting my cables.

Here are the main features of the ED1R Stackmatch Controller:

  • Names can be loaded for all antennas
  • PTT Sensitive to select different RX and TX antennas

      • Control through buttons or USB messages
      • Ready for 4O3A Triplexor
      • Comfortable Configuration through Windows application
      ED1R Stackmatch Controller

    Configuration Software

    This little Windows program allows a comfortable configuration of the individual Stackmatches through the USB port.

    stack control1

    Pablo, EA4TX has already developed an TCP/IP based client/server which allows us to control the Stackmatches from any operator position. This is another great advantage. In a competitive M/S or M/2 environment all three Stations need access to the Antennas.

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