R1A ringer details
By Alan Goldberg, ; posted May 3, 2014; hits 1200
 |
| Potted passive filter on left, with possible filled access to possible final adjustment port. Standard miniature ringer on right. Riveted cover plate has been removed. |
By Alan Goldberg, ; posted May 3, 2014; hits 1200
|
| Potted passive filter on left, with possible filled access to possible final adjustment port. Standard miniature ringer on right. Riveted cover plate has been removed. |