Replacing ICOM 271/471 Ram Batteries...Better Do It!

Replacing ICOM 271/471 Ram Batteries...Better Do It!

Post by Miles Abernat » Fri, 23 Jul 1993 22:17:10

Quote:>I am concerned about the longevity of my Icom 271/471 internal batteries.
>These have an unknown age. I have been told that these can be replaced by
>first temporarily connecting a new battery in parallel with the existing one,
>removing the old battery, fitting a new one, and finally disconnecting the
>temporary one. Has anyone had any experience with this maneuver ? Sounds
>scary, but theory says it should be ok.....

>John Mcleod N6RCD.

I told folks locally that they should go ahead and replace the RAM
batteries in their older rigs, even wrote an article about it for our local
club newsletter. But, like the cobbler whose kids go barefoot, I kept
putting it off myself.

Sunday I turned on the trusty old Icom 745 and all the display lights came
on at the same time and it beeped once and nothing worked. Uh-oh.

Shipped it to Icom yesterday. Had to pay $35 at the package store for box,
peanuts, packing and shipping (ouch!). I don't know Icom's hourly rate, and
there will be postage back. Bummer.
= = = = = = = = = = = = = = = = = = = =
  _     Miles Abernathy, N5KOB        =

_|    | POB 7580, Austin TX 78713     =

  \/    tel. (512) 471-6521           =
= = = = = = = = = = = = = = = = = = = =

 
 
 

Replacing ICOM 271/471 Ram Batteries...Better Do It!

Post by John W. Albe » Thu, 29 Jul 1993 22:27:47



Quote:>>I am concerned about the longevity of my Icom 271/471 internal batteries.
>>These have an unknown age. I have been told that these can be replaced by
>>first temporarily connecting a new battery in parallel with the existing one,
>>removing the old battery, fitting a new one, and finally disconnecting the
>>temporary one. Has anyone had any experience with this maneuver ? Sounds
>>scary, but theory says it should be ok.....

>>John Mcleod N6RCD.

A company called Willco Electronics sells a memory board that
has the important data stored in ROM.  When the battery fails,
the radio won't die, you just lose the memories.  The board
also increases the frequency limits and has 1024 memories.
 
 
 

Replacing ICOM 271/471 Ram Batteries...Better Do It!

Post by Jim Kearm » Fri, 30 Jul 1993 02:41:50


Quote:

>>>John Mcleod N6RCD.
>A company called Willco Electronics sells a memory board that
>has the important data stored in ROM.  When the battery fails,
>the radio won't die, you just lose the memories.  The board
>also increases the frequency limits and has 1024 memories.

Has anyone on here actually done this mod? I have an older
IC-751A. Everytime I turn it on, I wonder if this is the
time it

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