MFJ-941EK Tuner Kit Instruction Manual
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CONSTRUCTION
On the chassis, locate the balun transformer mounting hole (approximately 2" in
front of the terminal posts and ground post). Refer to Diagram 8 below:
KEP Nut
Metal Washer
1-1/4" FG Washer
4:1 Balun
1"Screw
1/4" Spacer
Diagram 8: Balun Mounting
[ ] Insert the 1" machine screw up through the bottom of the chassis.
[ ] Install a 1-1/4" fiberglass washer followed by the 1/4" nylon spacer on top.
[ ] Install the balun over the spacer, orienting leads toward the back panel.
[ ] Install the second 1-1/4" fiberglass washer to sandwich the balun in place.
[ ] Install a #6 flat washer and KEP nut. Tighten, but don't crush balun windings.
[ ] Locate B&W twisted lead on balun. Install on the ground-post lug and solder.
[ ] Trim and install the white lead on either BALANCED LINE post and solder.
[ ] Trim and install the black lead on the other BALANCED LINE post and solder.
Find the following items to prepare for installing the SWR meter:
(1) 2-1/2" Precision Cross-Needle SWR Meter
(1) Molded Plastic Meter-Mount Bracket
(2) #6 x 3/8" Sheet Metal Screw
(3) .01 uF Disc Ceramic Capacitors (marked 103)
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