[Icom] IC751A tech review and serial numbers

Mon, 11 Nov 2002 06:59:24 -0800

Isaac

I bought an IC - 751A new in 1987 and have had it ever since.  Main problem
is that several plastic capacitors tend to fail and need to be replaced with
ceramic ones.  Second main problem is that the lithium backup battery fails
and can be tricky to replace.  Seems the RAM loses its contents if the
battery fails.  I replaced the RAM with ROM using an after market offering
and it works great.  It has excellent sensitivity.  Also, I put a couple of
IR crystal filters and it seems very selective (250Hz for CW and 2.1Khz (?)
for SSB).

FYI - Check out some of the following 751A related urls - I have compiled
them over the last year.

http://www.sweb.cz/ok1fig/ic751a.htm

http://www.qsl.net/ab4oj/icom/751a_pbt.html

http://www.icomamerica.com/support/documents/ram_card.html

http://www.icomamerica.com/support/troubleshooting/ic-751_751a.html

http://www.piexx.com/cgi-bin/piexx.cgi?p=ICOMProm&cart_id=1452031.27134

http://www.qsl.net/ab4oj/icom/icom.html#IC751A

http://www.angelfire.com/biz2/mts/updates.html

http://www.piexx.com/cgi-bin/piexx.cgi?p=ux14&cart_id=4031494.24744

http://www.mods.dk/mods.php3?model=ic-751&radio=icom

73 de Jim WA6PX
[email protected]

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of TL
Sent: Monday, November 11, 2002 12:27 AM
To: [email protected]
Subject: [Icom] IC751A tech review and serial numbers

Hello Gurus,
I might have an opportunity to buy an IC751A as a backup radio .
I know this was a "project radio" that turned out to be a good one some time
after the regular 751 was discontinued.

What  serial numbers/product years  are known to be O.K \ Notorious?
Do late models carry larger serials?

Strange enough, I couldn't find any technical-lab-review about the 751A.

Thanks in advance, Isaac, 4Z4TL

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