PAC-12 Multi-band Coil Kit Assembly
The PAC-12 multi-band coil kit is designed to replace a fixed coil in the antenna system to provide continuous
tuning from 40 meters through 10 meters. The coil kit is wound with tinned copper wire and has a tap lead to adjust
the effective inductance and tune the resonant frequency of the antenna system.
Contents:
1 PVC coil form
2 aluminum coil end caps
4 #8 screws and washers
3 crimp or solder lugs
1 roll of #18 tinned copper wire
1 clip lead
1” heat shrink tubing
Coil Assembly:
To assemble the coil kit, start by feeding the bare #18 wire through the holes at the end of the lengthwise slot along
the coil form. Pass the wire into the hole through the tube and out the other side. One of the ring terminals should
be installed on the end of the wire by crimping and/or soldering the terminal to the wire end.
Next, install the end caps into the PVC tube and secure with 2 screws and washers on the same side of the coil as the
lengthwise slot.
A #8 screw with washer can then be inserted through the terminal end and attached to the other hole in the
aluminum end cap through the coil form side.
Once the end of the wire is secured, begin winding the wire around the tube by laying it into the grooves formed by
the threads cut into the coil form. Maintain tension on the wire as you wind. If you need to take a break, secure the
wire temporarily with tape or other method so that the wire will not become loose.
Continue winding to the other end of the tube until you have reached the end of the threaded area of the form. It is
important to wind all the way to the end of the threaded area as this ensures sufficient number of turns on the coil.
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