ozQRP MDT Construction Manual page 29

Receiver Coil L1
Take a 320mm length of 0.4mm
enamelled copper wire and wind on 15
turns on a T50-2 toroid. Spread the turns
to cover about 80% of the circumference.
Note the direction of winding as this
makes for a neater alignment on the PCB.
Scrape the enamel off the ends of the
wires and tin with solder before installing.
Collector Coil L2
Take a 220mm length of 0.4mm
enamelled copper wire and wind on 8
turns on a FT50-43 ferrite toroid. Spread
the turns to cover about 80% of the
circumference.
Note the direction of winding as this
makes for a neater alignment on the PCB.
Scrape the enamel off the ends of the
wires and tin with solder before installing.
MDT Construction Manual – Issue 2 Page 29