DB4020 Dual Band 40&20M SSB QRP Transceiver Kit
Page 27
16cm (32cm bent in half)
- Before beginning to wind, leave 15-20mm of wire, measured from the end of the wires to the outer
edge of the toroid. Now wind eight (8) turns on the toroid. Remember: Count one turn for each pass of
the wire through the center of the toroid.
-
Spread the turns evenly around the toroid.
- Cut the ends and separate the two windings.
- Use a sharp knife to scrape the enamel off the ends that will be soldered. The ends of the coils that we
have made need to be prepared in this manner before soldering them into the board.
- Using a multimeter in its ohm or continuity function, locate and mark the ends
, identifying them as “a” -
“a1” and “b” - “b1”.
- Mount the toroid into the appropriate holes as marked on the circuit board.
