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Heavy Duty Horizontal 432 Mhz loop for CW or SSB

A rectangular full wave, 5/16" diameter aluminum element

Measures 11" x 6"  (much larger than 1/2 wave loops)

Heavy Duty Mast Plate & adjustable Clamp, fit 1" to 2" OD pipe

I also have 1-1/2 or 2 inch U-bolt style mast clamps.

Gamma match tuning, 50 ohms

SO-239 Silver Plated Teflon connector

Great for rover or base

Assembled and tested 

                                Tuning instructions and settings below

Tuning Instructions.

When adjusting swr on this loop, a very little change will make a big difference. Mark positions of shorting bar and gamma match outer tube before moving.

If you need to adjust loop for a lower swr, start by loosening both set screws on the gamma match shorting bar. Movie the gamma match outer tube closer or farther away from the SO-239 connector. If more adjustment is needed, move the gamma match shorting bar closer or farther away from the SO-239 connector.

A combination of both will yeild a flat swr at your desired frequency.

Retighten set screws when done.

Measurments shown are a starting point only.

New 70 cm 6 element yagi (rear mount)

14.6 dBi forword gain,   24.2 dB front to back

Warning !!!!!  Antennas made from aluminum and stainless steel are excellent conductors of electricity

Contact with power lines can result in death or serious injury

Do not install antenna, tower or supporting mast near any power lines

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