Code | Manufacturer |
---|---|
106 | Allen-Bradley |
134 | CentraLab |
137 | CTS |
140 | Clarostat |
304 | Stackpole |
381 | Bourns Networks |
Code | Manufacturer |
---|---|
67 | Eminence |
73 | JB Lansing (JBL) |
137 | CTS |
220 | Jensen |
308 | Stromberg-Carlson |
328 | Utah |
336 | Western Electric |
391 | Altec-Lansing |
416 | Heath |
465 | Oxford |
589 | Bogen |
649 | Electro-Voice |
Code | Manufacturer |
---|---|
606 | Schumacher |
830 | Triad |
How the Source-Date Code Works.
In either case, the code works the same. The first 3 digits on a pot, or the first 2, 3 or 4 digits on a speaker are the source or manufacturer code.
The remaining 3 or 4 digits are the date code. In 3 digit dates code, the 1st digit is the last digit of the year. On 4 digits date codes, the 1st and 2nd digits are the last two digits of the year. In either case, the remaining 2 digits are the week of manufacture (01 to 52). With this in mind, remember if the last two digits of the source-date code are greater than 52, you're not looking at the source-date code!
Also it's worth mentioning:
Examples of Source-Date Codes.
Code | Manufacturer |
---|---|
24 | Becker |
101 | Admiral |
119 | Automatic Mfg |
125 | Bendix |
130 | Panasonic |
132 | Talk-a-Phone |
145 | Consolidated |
150 | Crecent |
169 | Hitachi |
185 | Motorola |
188 | General Electric |
213 | Dearborn Wire |
230 | Littlefuse |
232 | Magnavox |
235 | Mallory (North American Capacitor) |
245 | National |
251 | Ohmite |
252 | Dukane |
260 | Philco |
270 | Quam-Nichols |
274 | RCA |
277 | Emerson |
280 | Raytheon |
285 | Rola |
286 | Ross |
296 | Solar |
312 | Sylvania |
343 | Zenith |
371 | Best |
381 | Bourns |
394 | Foster Transformer |
433 | Cleveland |
449 | Wilder |
446 | Delco |
549 | Midwest |
575 | Heppner |
706 | Pioneer |
719 | Carbonneau |
742 | Esquire |
748 | Russel |
756 | Universal |
767 | Quincy |
787 | Sonatone |
789 | McGregor |
794 | Harmon Kardon |
795 | Atlas |
828 | Midland |
840 | Ampex |
847 | University |
918 | Oaktron |
1056 | Fisher |
1059 | Channel |
1098 | Pyle |
1113 | Acoustic Fiber Sound |
1149 | Curtis Mathis |
1191 | Micro Magnet |