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Article on the differences between the RA-DR1X and RA-DR1XM
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Here is an article by David Lowrence AL5X connecting a RA-40 interface to a YSF DR-1X repeater. Dave contacted me describing a modification he did to a RA-40 to allow it to revert a Yaesu System Fusion DR-1X repeater to local control if something AllStar or computer wise fails. If the computer or Raspberry Pi or radio interface fails, the DR-1X will revert to in-cabinet contol and continue to work. The DR-1X requires an open collector logic output of the correct logic direction in order to accomplish this. The RA-DR1XM needs no further modification, it's the result of the modification to the RA-40 shown in Dave's article.
In addition to the added transistor logic, one additional 3-pin configuration header allows selection of the original RA-40 revert logic. This allows the RA-DR1X to be configured identically to a RA-40. You don't lose any original RA-40 functionality with this interface, you only gain functionality to use it with the Yaesu DR-1X or DR-2X repeaters.
The DR-2X requires a slightly different wiring arrangement than what's shown in Dave's article. I don't have a complete DR-2X wiring detail. However, I believe the only difference is the following connections made to the HD15 connector:
DR-1X - Pins 10 and 11 are jumpered together and go to ground. I assume
pin 12 is left unconnected.
DR-2X - Pins 10 and 12 are jumpered together and go to ground. I assume
pin 11 is left unconnected.
RA-DR1XM
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RA-DR1XM Unassembled Kit with Blue, Black or Red Metal Case
RA-DR1XM Assembled & Tested with Blue, Black or Red Metal Case
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Support Documentation:
Support Documentation - schematic, jumper settings, parts list,
installation and set-up instructions for the RA-DR1XM.
Summary Features List.
Detailed Description.
RA-DR1XM Construction Article.
Custom cables may be available from URI Cables. They can build a custom cable for the RA-DR1XM for many radios / repeaters - including the original DR-1, the DR-1X, the DR-2X and the "FR".
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Board layout by Kevin Custer - W3KKC
HTML April 22, 2024, W3KKC All Rights Reserved!