Difference between revisions of "RC-133"
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Coast Artillery 16-line Time Control 1 KC tone signals | Coast Artillery 16-line Time Control 1 KC tone signals | ||
==Components== | ==Components== | ||
| − | ===Early== | + | ===Early=== |
* [[EE-56]] time interval unit | * [[EE-56]] time interval unit | ||
* [[BD-15]] switchboard | * [[BD-15]] switchboard | ||