[amsat-bb] FT-847, uni-directional or be-directional version?

Ted Krempa k7trkradio at charter.net
Wed Mar 7 00:59:52 UTC 2018

>From a prior posting:

Subject: RE: [amsat-bb] FT-847 serial number investigation
From: "Alan P. Biddle" <APBIDDLE at xxxxxxx>
Date: Sun, 2 Dec 2001 19:27:04 -0000
In-Reply-To: <Pine.GSO.3.95.1011202104753.12708C-100000 at oso.slonet.org>


>From a FAQ on the FT-847.  Perhaps this will help.


Serial Numbers

Updated 10Jan01

Yaesu appears to use the following format for serial numbers on their
amateur products:

Year of manufacture-Month of manufacture-Production Run-Individual Unit
number, where the month of manufacture is offset by 2, so "C" means January,
"D" means February, "E" means March, and so forth.

Example: 8G051234 = 1998, May (fifth month, or "G"), Production Run 05, unit
#1234 in this run.

One key serial number range is 8G05. This seems to be the point at which
Yaesu had corrected the bi-directional CAT issue and made some other
improvements. This version was made in May 1998. Later serial numbers (e.g.,
8L09nnnn) all seem to have incorporated the earlier improvements plus new

73, K7TRK

-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of Erich Eichmann
Sent: Tuesday, March 6, 2018 7:37 AM
To: AMSAT-BB at amsat.org
Subject: [amsat-bb] FT-847, uni-directional or be-directional version?

Does somebody know whether one can recognize by the serial number of the  FT-847 whether it is an old, uni-directional or a newer, bi-directional vrsion? A user here in Germany has two FT-847 with serial numbers 3M840064 and OE320084.

73s, Erich, DK1TB

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