Laurie - G6ISY developed the method of calculating the manufacture
date.
The file name is: "SerialNumber to Date.txt" How to work out the age of your
radio.
Utilizing his information I found this fantastic javascript written by someone else (Tim?) to do the calculation and should work for anything made since 1999.
Below are some example dates and at the bottom of the page is an explanation
of the date formats.
Good Filters |
Defective Filters |
Good Filters |
301xxxxx = April 2001
311xxxxx = February 2002
313xxxxx = April 2002 809xxxxx = December 2006 |
810xxxxx = January 2007
910xxxxx = January 2008
001xxxxx = April 2008
004xxxxx = July 2008 |
A88xxxx = August 2008
A8Bxxxx = November 2008
A91xxxx = January 2009 A98xxxx = August 2009 |
A99xxxx = September 2009
B02xxxx = February 2010
C5Axxxx = October 2025
Z9Cxxxx = December 2259 |