EB5AGV's Workbench: ICOM RAM board resources

Useful for IC-271, IC-745, IC-751, IC-761, IC-R71, IC-R7000 ...

ICOM RAM board

ICOM RAM board

This page is a compilation of several resources found over the years on Internet regarding the problem with some old Icom rigs which had part of their operating system (or at least important parameters) stored in a volatile RAM backed up by a battery. When that battery goes, so does your rig!


RAM Card Backup Battery Replacement Instructions by ICOM

Document from ICOM about the battery replacement with the procedure to save memory contents.

RAM Card Backup Battery Replacement Instructions


Procedure to re-program the IC-751 or IC-745 RAM board by VU2SBJ

Procedure to re-program the IC-751 or IC-745 RAM board

HEX file cited on the previous document by VU2SBJ

IC-751 HEX file (does NOT work with 745, despite VU2SBJ comments)


RAM image files

TESTED

R-71 HEX file (N2CBU format)

R-71 HEX file with extended frequency range (N2CBU format)

IC-745 HEX file (N2CBU format)

IC-745 BIN file (N2CBU format)

UNTESTED

IC-271 BIN file (RW3XA format)

IC-751 BIN file (RW3XA format)

IC-761 BIN file (RW3XA format)


Programming software by N2CBU

Includes the schematics to build the programmer. This is the one I have used with success.

RAM Module Programming Utility (N2CBU)


Programming software by RW3XA

Includes the schematics to build the programmer (different than the N2CBU one)

RAM Module Programming Utility (RW3XA)


IMPORTANT

If you have any BINary or HEX files for other Icom rigs, please, share them with me and I will add them here. Thanks!


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