[ARC5] SCR-274 Transmitter interior photos

Mike Morrow kk5f at earthlink.net
Wed Mar 2 11:57:32 EST 2011


Jim wrote:

>I'm trying to restore a BC-457 that appears to be largely stock.
>However, it's missing its roller inductor, both relays, and power
>resistor on the rear bulkhead.

Wow...what a labor of love!  BC-457-A transmitters are still pretty
common in many states of originality.

You are looking for L-52, K-53, K-54, and R-71.  You will find only
another transmitter as a source of these, even R-71, unless someone
has some of the old spare parts inventory.

The four SCR-274-N transmitters used three different antenna roller
inductance assemblies (L-52), marked in red ink/paint somewhere as
6033, 6034, or 6035.  The one for your BC-457-A should be the 6034.

Good luck.

Mike / KK5F


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