In the United States (other countries have their versions of same - but they are incompatible and completely different) a product that emits any frequency above 500KHz must be inspected and approved by the FCC (Federal Communication Comission). Once approved, it is issued an ID number that begins with a 3 letter code for the company that makes it, followed by another number that actually identifies the inspection. Example: DZLSCB4-PC-MCR (my Logitech Scanman 256. :-) The most CRITICAL are the first 3 characters (DZL), as far as we're concerned, anyways. That's because we are most interested in who made some device, not what the FCC thinks of it. :-)
Updated October 2007
The FCC ID SEARCH FORM provides quick access to manufacturer info, operating frequency range, the application and grant, and any exhibits that may have been provided.
FCC ID Numbers Cross Reference
Author: Andy Laberge
E-Mail: tic-toc@wolfe.net
Date: 22 Apr 1995
Sorted by ID number
RADIUS TPD
WYSE WY-50
5F7NF13CM20 HEWITT-RAND HR-SV-14
A3L9QN5154 IBM 5154
A3L9QNC1452M IMTEC 1453MI
A3L9QNTWB PACKARD/BELL PB1431
A7RM260A SCOTT SM2350A
ACJ928KMX-F408 PANASONIC C1395
AMPJK1461 WEN JK1461
ARSCM3350 POWERII HIGHRES3E
ATO90CZCM1492 ZENITH ZCM-1492
ATO9M7DC13492R ZENITH ZVM-1330
BEJCA453 APPLE M1787
BGB9JBAUM-1381A MITSUBISHI AUM-1381A
BJM9UBCM12A01 IBM 8513
BJM9UBMM1232 IBM 8503
BRFCAC14NF TOUCH CAD14NF
C4ZYG0010 SEIKO CM-1440C
C5F7NF13CM14 IBM 8512-001
CKL8J7HMM-1401 HYUNDAI HMM-401
CKLHCM-421 HYUNDAI HCM-421E
CSYSC-431VA BSR 3100V
CSYSC-431VS SAMTRON SC-428VS
DBLCMS-1461A CTX CMS-1461
DBLCVP-5468NI CTX CVP-5468NI
E808ZATE9513 RELYSIS RE9513
FEK8J7TM-5156H CASPER TM-5156
FVI7034T VIEWSONIC 7034T
FVI7035B ADDONICS 7035B
G2DVGM-1414 ALR VGM-1414
GBVCK1405 KFC CK-1405
GQBXXX4290 COMPAQ 420T
IAWLX1564 GATEWAY CS-1572FS
IEHVM1491H VIT VM1491H
IQXSRC1451 SHAMROCK SRC1451