Kenwood Month/Year of Manufacture Calculator

Laurie - G6ISY developed the method of calculating the manufacture date.You can find his original work in the files section on the Yahoo group for the TS-2000.
The file name is: "SerialNumber to Date.txt" How to work out the age of your radio.
Utilizing his information I wrote this javascript to do the calculation. This 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

Put the first 3 characters of your serial number into the box below and then click the Submit button.

You can put more than 3 characters in but the program just ignores them.


TS-2000's (Including the X model) in the serial number range 810xxxx - A98xxxx (dates January 2007 - August 2009) were produced with defective filters.
Kenwood has been replacing these bad filters for free. Contact Kenwood National Service Centers for more information.

Please let me know if you have problems or comments by sending me an e-mail at

Kenwood serial numbers issued from 1999 come in 2 formats.

The format used from 1999 until approximately August 2008 is numeric:
First digit is the year code, add 1998 to get year. If first digit is 0 add 10 to 1998.
Next 2 digits are the month code starting with 01 which is April (begining of Japanese tax year).
    Months 10,11 & 12 will be Jan, Feb, Mar of the next year so add 1 to the year.

The format adopted from approximately August 2008 is alphanumeric:
The first character is the decade A=2000, B=2010, C=2020.
The second character would be the year of the decade from 0 to 9.
The third character is the month. 1-Jan, 2-Feb, 3-Mar, ...., 9-Sep, A-Oct, B-Nov, C-Dec.