fender12

It sounds weird but I just got the 8 in. I now have better reception. Im thinking cause it does not bend in the wind like my stock did. I could not decide either which one i wanted but I just went with the 8 dont know why but I think it looks a tone better than what it did. Flip a coin it but i think either way you will be happy. I just used a wrench to tighten it and i have tried to take it off with my hands, not possible, i have to have a wrench to get it off.

157dB

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The official formula for a half wave antenna in free space is 492/f where f is in Megahertz (MHz) and the length is in feet. For a practical 1/2 wavelength dipole length is feet use general formula of 468/f where f is in megahertz (MHz). A half wave antenna length (in inches) in free space is calculated by the official 5904/f where f is in megahertz (MHz) and the calculated length is in inches. If capacitive loading, end effects, etc. are taken into consideration this formula would then become 5616/f where f is in Megahertz (MHz). These formulas will work fairly well for a dipole mounted at least 1/4 wavelength above ground. Some tweaking might be in order due to capacitive loading from nearby objects. End effect may also change resonance requiring slight adjustment in length. It is best to cut a dipole a few percent longer then the calculated length then prune it for resonance. Starting longer is aLOTbetter then starting at the calculated length or shorter! It is easy to trim but a bit harder to stretch. Using the official free space formula is likely to be way to long. Proximity to ground, trees, homes, even the feedline greatly influence resonance so make sure you check it. The nominal feedpoint impedance of a dipole is generally 72 ohms but this can vary widely. The lower to ground it is, the lower the impenitence.
For a 1/4 wave vertical the above numbers would be half. Therefore, the height of a simple 1/4 wave vertical can be calculated by 234/f where f is in Megahertz (MHz). Since ground (including radials) act as the other half of the antenna a vertical is really a half wave antenna with a vertical polarization.[/align]
2808/FmHz ...that is divide 2808 by the frequency in megahertz.
This gives us the length in inches.
So, with 93.0 mHz we get: 2808/93.0 = 30.1935483871 inches.
A quarter wave antenna feeds directly or impedence matches
50/75 Ohm unbalanced coax.

Its not the antennas ability to receive the signal that degrades with
shortening it, its the antennas ability to properly impedence match
with the 50/75 Ohm unbalanced coax that sends the signals to the receiver.
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southernmustangparts

We have the 5.5 and 9.0in Lund antennas in stock.

Check them out.

Sold a bunch of these and everyone seems very pleased!



http://www.southernmustangparts.com/mustang-antenna-lund-shorty-antenna-p-384.html

order today and ship on Monday!

Thanks!

Ken