MFT-40 DSB Transceiver Kit
Page 19
- 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 every time the
wire passes through the center of the toroid.
- Spread the turns evenly around the toroid.
- Cut the ends and separate the two windings.
- Use a sharp X-Acto 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.
Note: For greater clarity, the drawing shows one black wire and one red wire. In reality, both wires are of
the same color.