Pacific Antenna PAC-12 Manual Download Page 12

 

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80 Meter Coil Assembly

Note: This coil kit is an option, not part of the standard kits.

Parts:

PVC coil form, light gray (1)
Aluminum end caps (2)
8-32 x 3/8” stainless Phillips screws (4)
#8 internal tooth lock washers (4)
#8 ring terminals (2)
#22 insulated copper wire

The coil is assembled using the 2 larger end caps, the larger light gray PVC coil form and 4
of the 8-32 x 3/8” screws. Four #8 lock washers and 2 #8 ring terminals are used.   Two 
lock washers go on one side to secure the screws and the 2 ring terminals are used for 
connecting the coil windings.  

Insert the end caps, align the screw holes 
and insert the screws.

Once the end caps are installed,, the coil is ready for winding.  
The coil form showing holes to secure windings.  For 80M hole set “A” will be used.

Band Meters

Turns to wind

Hole set(see photo)

80

145

A

Start by winding 145 turns on the coil.  This should almost entirely fill the space between 
the hole set (A) At this point, you may prefer not to solder one end of the coil.  This will 
allow adjusting the coil without unsoldering.  Once you are happy with the coil you may 
choose to crimp or solder the wires to lugs or leave as is.  

The Completed 80 meter coil

PAC12_Manual
V3.0_20160712

Summary of Contents for PAC-12

Page 1: ...red and green 3 18AWG enamel wire for standard coils or Tinned copper wire for multi band coil Ground coupling radial kit 1 1 Feed point insulator PVC tube 1 Feed point insulator end caps 2 Full size...

Page 2: ...e to use the correct screws as the longer 3 8 screws supplied for the loading coil will interfere with the threaded sections screwing into the end caps The screws should start smoothly and should not...

Page 3: ...shell of the BNC and the end caps of the antenna Resistance readings should be no more than one or two ohms including the meter lead resistance Also verify that there is no short by checking resistan...

Page 4: ...indings Full Size Coil Form Once the end caps are installed the coil form is ready for winding the coil The coil form has a series of holes used to secure the ends of the winding Depending on which ba...

Page 5: ...routed when winding the coils When using the inner sets of holes the wire can be run through the hole set at the end of the coils and then looped back through the next hole set to provide additional s...

Page 6: ...e the wire Wind the specified number of turns on the coil A turn counts each time the wire loops completely around the coil from the starting point If in doubt put on extra turns as it is easier to re...

Page 7: ...o the coil form and from the other the wires emerge lie along the coil form and re enter at hole set A pass through and connect at the solder lugs If using the inner hole sets you can loop the wire ba...

Page 8: ...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...

Page 9: ...mp 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 wir...

Page 10: ...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 en...

Page 11: ...rom bottom whip partially collapsed 40M 30M 20M 17M 15M 12 10M The chart and sketch are included on this page for assistance in finding the tap points for each band This page can be printed and held n...

Page 12: ...e 2 ring terminals are used for connecting the coil windings Insert the end caps align the screw holes and insert the screws Once the end caps are installed the coil is ready for winding The coil form...

Page 13: ...t may require rotating the whip slightly while inserting Once in place secure using the 8 32 x 1 4 Phillips head screw This completes the whip assembly Radial kit Parts 16 conductor ribbon cable 4 1 4...

Page 14: ...so and twist them together Crimp the terminal and use electrical tape or heat shrink tubing to strain relief the connection Separate the sets of 4 wires into two wire sets from the end up to the stra...

Page 15: ...ailable some aluminum antioxidant grease will make assembly and disassembly of the antenna easier as well as maintain good conductivity between the sections Small tubes of a suitable material can be f...

Page 16: ...ground is not present longer resonant radial wires will improve performance Testing Assemble the antenna and test for lowest SWR You may need to collapse up to one full section or more of the whip to...

Page 17: ...ering iron Q How much power does it handle A The PAC 12 is rated to 100W of power when adjusted to a matched condition Q What is the difference between the fixed coils and the multi band version A The...

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