[ICOM] (no subject)

[Adam Farson]

Hi Jim,

Without entering into the "analogue vs. DSP debate":

I had an IC-751A from April 1990 until I sold it early in 1994 because it
was gathering dust on the shelf below an IC-781 which I was using
exclusively at that time. My 751A was fully-loaded, with FL-52A, PS-35,
CR-64 and speech board. It was even fitted with the RC-10 keypad. (The
IC-781 left my station in November 1998.) The 751A drove an IC-2KL/AT-500
pair for seamless, 500W auto-tune operation.

The SSB filtering and PBT operation on the 751A was far superior to that of
its predecessor in my shack, an IC-765 with the PBT mod. (I put that down to
FL-80/FL-44A vs. FL-30/FL-96). However, I did find that the 751A's PLL
synthesiser was somewhat noisy as compared to newer radios using a DDS
design (-104 dBc/Hz at 2 kHz offset, as compared to -111 for the IC-765 and
-125 for the IC-756Pro2). This led to relatively poor close-in reciprocal
noise mixing performance. I also found the lack of band-stacking (requiring
retuning in all cases when changing bands) rather cumbersome.

The RAM backup battery on the EX-314 RAM board never failed in my 751A, but
nowadays I would recommend replacement with an aftermarket ROM board such as
the Nardo or PIEXX product.

In the course of replacing the notorious HPL VCO trimmers, I found that the
paper-phenolic PCB material had a nasty tendency to de-laminate.
Fibreglass-epoxy board stock in more recent Icom models cured this problem.

http://www.qsl.net/ab4oj/icom/oldicom.html

I enjoyed my IC-751A in its time, but would not wish to acquire another one
at this point.

Cheers for now, 73,
Adam VA7OJ/AB4OJ

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Jim Vohland
Sent: 20 September 2005 10:11
To: icom at mailman.qth.net
Subject: [ICOM] (no subject)

From: Jim Vohland <n9vo at hotmail.com>
To: icom at mailman.qth.net
Subject: Re: [ICOM] IC-751A
Sent: Tuesday, September 20, 2005 11:43 AM Interesting 751A story. I had one
a year ago but like a fool, I traded it off on a deal for a 756 Pro to a ham
in Alabama. Few months later the Alabama man called and wanted to offer the
751a back to me but at time I couldnt afford an extra rig. So I turned the
deal to friend of mine in cincinnati. He loved the rig but decided that he
needed a new rig and offered in back to me in a trade. Soooooo I now have my
original 751A, (hi serial nbr) piexx ux14 board and it works great. It will
not leave the shack again. Full circle in a year. If you can find one, jump
on it. Great receiver. Good luck.

	 	From: "Steven Moore" <scm at copper.net>
Reply-To: ICOM Reflector <icom at mailman.qth.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Subject: Re: [ICOM] IC-751A
Date: Mon, 19 Sep 2005 21:15:12 -0500

Thanks Jan. I will get in touch with him.

73  Steve



	 	Steven Moore wrote:

	 	speaking of the 751a, I would like to buy one. It only needs
to look decent and work correctly on all functions. oh, and not be priced
like 'new in the box on ebay'

73
Steve  wd0ct    785 272 6117

Hi Steve,
Contact Gene Furry, k5gf at cmaaccess.com, and ask about the really fine 751 he
has.  I can't go ahead with purchase, but that's the rig I'd likely buy if I
could.  GL es vy 73.  Jan N0JR


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