2.10 Prepare and install tapped inductor L401
80 / 60 / 40 / 30 / 20m version: L401 is an inductor wound on a T50-2 toroid (red colour, large
size), having several taps which are switched in according to the operating frequency (band).
There are 43 turns in total, with taps at 19, 30 and 38 turns. The diagram shows the location of the
taps at 19, 30 and 38 turns, which have larger holes, such that two wires can be inserted.
Carefully unwind and cut off approximately 80cm of the 0.33mm (AWG #28) enameled wire, and
straighten it, ensuring no kinks.
Step 1: Begin winding L401 as shown. Remember that in the nomenclature of toroidal inductors,
each time the wire passes through the center of the toroid counts as 1 turn.
Step 2: Wind 19 turns then make a loop between the 19
th
and 20
th
turns. This is for the 19 turn tap.
QMX assembly Rev 1.00e 32
To Next Page
Loading...
Need help?
General
