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Should the wire be loose on the coil winding, you can use your hand to work it in a twisting motion to remove the
slack and pull the excess at the end of the coil.
Next, leave a few inches (~6) beyond the last turn on the coil and cut the wire from the spool. This end should be
long enough to be passed through the holes in the form. Push this end trough the holes at the end of the coil as was
done when starting the coil winding so that it comes out the other side. Secure the end with another crimp terminal
and cut off any extra wire. Secure the end by soldering or crimping the wire to the terminal and connect with a
screw and washer.
Coil Tap Assembly
Once the lead is complete it should be secured under one of the screws at the end of the coil form as shown below.
This completes the assembly of the PAC-12 Multi-band coil. This is how it should look when completed:
Operation:
The multi-band coil kit is installed into the PAC-12 antenna system by screwing it onto the top of the base rods and
screwing the whip adapter and whip into the top end.
The multi-band coil can be installed either with the tap lead up or down. The coil can be adjusted to resonate the
antenna on any band between 40M and 10M. For operation on 10M, the telescoping whip may need to be collapsed
a bit as the antenna may be a bit too long for resonance.
The antenna should be tuned by moving the tap position, checking the SWR and if necessary adjusting the whip
length to achieve a good match (<2:1).
To insert the tap, grip the clip and press on the back end to expose the metal end. Align it parallel to the direction of
the winding and while holding it extended, insert it between the turns of the coil in the desired area, rotate it by a
quarter turn so that the metal end is under the wire and then release. Reverse this process to remove the clip.
Check the SWR and move up or down the coil as needed to achieve a match. See the chart and sketch on the next
page for guidance in finding the tap points.
The flying tap lead is created using the test clip lead with crimp terminal placed on the
end and covered with heat shrink tubing.
First, strip approximately 1/4" of the insulation from the end of the clip lead wire.
NOTE: Be sure to slip the shrink tubing over the wire before attaching the ring terminal.
Next, attach the ring terminal on to the stripped end of the wire by crimping and or
soldering.
Once the wire is crimped, slide the head shrink down and over the crimped area of the
ring terminal and apply heat to shrink the tubing to secure the wire and protect from
flexing.
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