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Features of the Model RA-64M.
What's different and what's not.


Quick Explanation:
The RA-64M is a dual Mini-DIN-6 equipped sound card made specifically for our extruded & anodized Metal-SC Cases. This RA is designed to connect two radios to a single interface to easily make an AllStar Link Repeater using two commercial or amateur radios. A COS LED indicates the status of squelch logic when driven by AllStar Link (HamVoIP or ASL).

The RA-64M has 4 LEDs on the front panel, and has selectable Relay or Transistor PTT keying. There is no Standard RA-64 - this interface is only available in a metal case.

   
RA-64M Front and Rear



More information for those willing to continue reading:
If you've ever purchased one of our original RA's with a Metal-SC case, you know that adapter rails are used to make the board wider and longer - so it can slide into the mating slots of the metal cases. The rails are simply installed as part of the build process. The M Series circuit boards eliminate the need for adapter rails and maximizes usability because the board is a little larger. The new boards slide directly into the slots of the metal case. The boards have a tinned copper shielding enhancement area that slides into the slots of the metal case. This tinned area maximizes the coupling between the board and case and minimizes RFI.

A new front panel adds the COS LED on the front and the rear panel properly identifies the RA-64M and radio ports.

The PTT keying method is selectable by two mechanical jumpers. You choose between Transistor or Relay keying. The Relay position adds compatibility with all radios. The Transistor position insures the fastest keying on radios that are okay with electronic keying. A reed type relay minimizes the keying delay when this option must be used.

Because the M series circuit boards are slightly larger, we now have the room to move things around without compromising performance. In the case of the RA-64M - we've moved the headers to a more easily accessible spot. Needle nose pliers are not required to move any jumpers.

We currently make the following M Series products:

  • DRA-30M
  • DRA-36M
  • DRA-39M
  • DRA-45M
  • DRA-50M
  • RA-40M
  • RA-42M
  • RA-47M
  • RA-64M
  • RA-DR1XM


    Email Kevin Custer for ordering information, ordering by check, and/or support of this exciting product.

    Product of Masters Communications, all rights reserved.
    Specifications may change without notice.
    Images are property of Kevin Custer - W3KKC
    Board layout by Kevin Custer - W3KKC
    HTML July 27 2026 - W3KKC All Rights Reserved!