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QRPGuys K8TND Manual page 6

Regenerative receiver
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Install C13, 1uF electrolytic capacitor,
[ ]
Install J1, DC power jack
[ ]
Install 9V battery clip-female, as shown below
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Install 9V battery clip-male, as shown below
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Install VR1, 10K panel mount pot. Connect to the pcb using the hook-up wire provided as shown
below.
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Mount the control knob on VR1. It may have a removable tab to clock for mounting in a certain
position. Break it off so the pot mounts flush.
[ ]
Use the T68-2 toroid core (red), the supplied magnet wire, and wind T1 as shown below, start
winding at the 5 o'clock position. Push 1" of the wire down the hole from the top and hold it, feed
the remaining turns up from the bottom.
turn. Wind a total of 10 turns, and form a 1" loop, wind another 7 turns, and form another 1"
loop, then finish with 21 more turns. If you have your own special technique for winding toroids,
use it. The wires must be over the core or under the core for each group of turns as shown
below. If the wound core does not look like the picture below, it will not align with the pcb holes.
Be sure to verify the turn counts on each group before you cut the loops.
observe polarity, the long lead is positive
Every time the wire goes thru the center counts as one
A yellow core is shown for clarity.
Page 6 of 10
regen_100418.pdf

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