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Features of the Model RA-47M.
What's different and what's not.


Quick Explanation:
The RA-47M is a Mini-DIN-6 equipped sound card made specifically for our extruded & anodized Metal-SC Cases. This RA is designed to work well in either analog or digital applications where an amplified sound card is required. A COS LED indicates the status of squelch logic when driven by AllStar Link (HamVoIP or ASL).

The RA-47M has 3 LEDs on the front panel, one on the back, and has selectable Relay or Transistor PTT keying. There is no Standard RA-47 - this interface is only available in a metal case.

   
RA-47M 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.

Plastic cases allow all LED's to be viewed from the top. As shown above, a new front panel adds the blue LED, and new rear panel adds the COS led and properly identifies the RA-47M.

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-47M - 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-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 November 10, 2024 - W3KKC All Rights Reserved!