[ARC5] BC-442-A relay connections

[Mike Morrow]

Refer to SCR-274-N Handbook of Maintenance Instructions TO 12R2-3SCR274-2 of June 1956 which is found here:

 http://bama.edebris.com/manuals/military/scr274/

On page 187, the detailed physical internal wiring layout for BC-442-A in Figure 50 shows **exactly** the information you seek.

Mike / KK5F

-----Original Message-----
From: "AKLDGUY ."
Sent: Nov 7, 2017 3:40 PM

There appears to be no diagram on the internet that shows the wiring to the twin winding K55 relay coil in the BC-442-A antenna relay unit. With the unit upright and with K55 at top left, let's number the coil connections 1,2,3,4 from the top.
My unit has 12V scrawled on the outside. The socket is connected to 1 and 2, with 2 strapped to 3. Terminal 4 is unconnected.
To rewire to 28V, I should retain the 2-3 strap and connect to 1 and 4, correct?
Neil ZL1ANM