MFJ-941EK Tuner Kit Instruction Manual
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CONSTRUCTION
Find the six (6) pre-stripped 5" lengths of jacketed hookup wire:
(3) Black
(1) Red
(1) White
(1) Violet
[ ] Locate three holes marked Ground on the edge of the pc board near R8.
[ ] Install a black wire in each and solder (free ends to be connected later).
[ ] Install a red wire at LMP (behind SW1) and solder.
[ ] Install a violet wire at FMTR (between SW1 and SW2) and solder.
[ ] Install a white wire at RMTR (opposite side of SW2) and solder.
Find the following items to construct SWR transformer T2.
(1) .37" OD toroid with bifilar winding
(1) #4 Teflon shoulder bushing
(1) Small brass eyelet
(1) 5-1/4" length of #16 buss wire
Refer to Diagram 2 below:
Buss Wire
Brass eyelet
Bend Wire Over
Solder to Pad
T2
Shoulder Bushing
BussWire
Top View
Install Toroid
Side View
Bushing
Install
In Eyelet
Install Eyelet and
1
2
3
and Solder to Eyelet
5
Over Eyelet
4
Install
Shoulder
Install Wires and Solder
6
Diagram 2: SWR Transformer Installation