While experimenting with
S- Match I decided use in the match magnetic loops. Yes, why not
use in this one not binocular transformer but just usual loop.
I used small loop with diameter up to 70 cm. Each loop contains
two turns. Connections the loops with each other are shown on
the Figure 1. I used two
wires with different color inside of the plastic frame that easy
connect the loop together. Outdoor antenna connected through transformer
1: 4 or 1:9, it depends on local conditions and antenna design.
Transformer coiled on ferrite ring ¼ inch OD, 1/16 inch
Transformer has ratio 1:4 at winding 10 turns/5 turns
and ratio 1:9 at winding 15 turns/5 turns. By experiment find
best position to hook up antenna to the transformer and hook up
the transformer to S-Match. Picture
1 shows design of the S- Match Loop. You can see connections
of the two loops, antenna transformer, tuning capacitor and selectable
coil. Picture 2 shows the
Simple Receiving Magnetic HF Antenna- S- Match Loop.