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RE: FT-847 serial number investigation


>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




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helps to know what part of it feels
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