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Pacific Antenna 20 and 40M Lightweight Dipole Kit
Diagram showing configuration and approximate lengths
8' 3"
8' 3"
16"9"
16'9"
Description
The Pacific Antenna lightweight dual band, trap dipole kit provides operation on both 20 and 40M bands.
Two capacitors in series serve to resonate the trap coil and isolate the inner part of the antenna for 20M operation.
On 40M, the traps act as loading coils and shorten the overall length of the dipole
Total length is approximately 50 ft rather than the 66ft of a full size 40M dipole.
The dipole weighs less than 5 ounces and can be used at RF power levels up to 100W.
Recommended Tools
Wire cutter
Wire stripper
Soldering Iron and solder
Tape measure
Heat gun or other heat source for shrink tubing
Note:
This manual applies only to the latest version using blue coil forms. If you have a previous version with
black forms, use the earlier manual version.
2040DipoleV2_20180214
1
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Summary of Contents for Pacific Antenna 2040
- Page 1 16’9” Description The Pacific Antenna lightweight dual band, trap dipole kit provides operation on both 20 and 40M bands. Two capacitors in series serve to resonate the trap coil and isolate the inner part of the antenna for 20M operation.
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Page 2: Before You Start
Before you start We suggest that you inventory the parts according to the contents list to be sure the kit is complete. If not please contact us for replacements. Contents 75ft of #24 stranded wire BNC connector (1) Dipole center insulator PCB (1) Trap capacitors PCB (2) Coil forms (2) 27pF 3KV capacitors (4) -
Page 3: Trap Assembly
The traps are constructed from capacitors and an inductor (coil) to form a resonant circuit. Two 27pF capacitors are placed in series by soldering to the long circuit boards and connected in parallel with the loading coils to form the traps. - Page 4 Insert the capacitor board into the coil form so that it is centered in the form, insert the stripped coil wire ends into the board and solder the wires to the boards. Repeat this process with the other coil to complete the trap set for the dipole. Antenna sections Each trap will be connected to the end of one 17 feet and one measuring 8 feet 3 inch wire by feeding the wire through the outer hole, back through the next hole.
- Page 5 Shrink the tubing using a heat gun, or other heat source. Use caution to avoid overheating the coil form or causing injury. A few tips on shrinking the tubing can be found here: http://www.doityourself.com/stry/8-ways-to-heat-your-heat-shrink-tubing Center Insulator The center insulator circuit board has a large hole for mounting the BNC connector as shown in the photos below. Place the star washer on the BNC and insert the connector in this opening in the circuit board.
- Page 6 Note: It is important to test carefully and verify the need for trimming and be very careful not to remove too much and in most situations, it should not be necessary to cut the outer section shorter than approximately 8 ft 3 inches. Congratulations, your Pacific Antenna 2040 dipole kit. is now complete! If you have any questions, please contact us: q rpkits.com@gmail.com...