[ICOM] R71A Problems

[Ken Winterling]

Gary,

I have used the PIEXX Non-Volatile RAM module in the 751A but it also works
in the R71A.  It costs $59 new.  The battery on the module only maintains
the memory channel data. The "personality", if you will, is stored in the
NVRAM so it isn't lost when the battery dies or is removed.  The radio will
continue to work with a dead or missing battery.

See it here:
http://www.piexx.com/index.php?main_page=product_info&cPath=8&products_id=26

Installation documentation: http://www.piexx.com/icomprom.pdf

Ken, WA2LBI


On Fri, Apr 8, 2011 at 16:27, Gary H. Harmon, Jr. <gharmon at idworld.net>wrote:

> My concern now is if a new RAM module will return the radio to normal.  I
> replaced the battery and it made no difference.  Of course, if the RAM had
> already died because of the battery, a new battery would not have made any
> difference.  Gary makes a good point in suggesting a swap test with a known
> good RAM board.  Does anyone have a "loaner" board for testing?
>
> I see there are boards on eBay for $65.
>
> Thanks in advance.
>
> Gary H. Harmon, Jr. - K5JWK
> 6003 Archwood
> San Antonio, TX 78239-1504
> 210.657.1549h / 210.884.6926c
>
> "Retirement means every day is a Saturday except Sunday"
>
>  -----Original Message-----
> From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net]
> On
> Behalf Of Gary P. Fiber
> Sent: Friday, April 08, 2011 3:19 PM
> To: ICOM Reflector
> Subject: Re: [ICOM] R71A Problems
>
> Amazing to me but sure sounds like the battery was flat and lost the ram
> programming.
> If you are careful and have another R-71A you can swap the ram units and
> see
> if the trouble travels. I am unsure if either Scott Malcom or Kuni Okuma
> can
> reprogram the ram units.
> I did one see online a home built ram unit programmer and the Hex files for
> the various units. below are some site and show some home made programmers.
>
> http://www.qrz.ru/schemes/contribute/technology/icom751/english.shtml
> http://www.reocities.com/n2cbu/Icom/ReadMe.htm
>
> http://ad4c.us/ICOM%20HF%20manuals/IC-R71A/Modifications%20for%20the%20Icom%
> 20IC-R71.htm
> EPROM / RAMBOARD
> by Roberto Nardo, IK2RND
> For ICOM  IC-751/A  IC-751 IC-745
>      ICR71E/A and IC-271 IC-471 IC-1271
>
> I'd probably grab one of the eprom programmed after market replacement
> boards. They seem to be very reliable and most of the designs add more
> memories.
>
> Gary K8IZ
>
>