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Old 02-08-2013, 10:51 PM   #23
JOJABOY
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Join Date: Sep 2012
Location: Factory
Posts: 682
Re: New antenna installation how to

Quote:
Originally Posted by special-K View Post
Hey,didn't you have to remove the wipers? Just messing with you. But,just to be accurate,that has to be done to remove the cowl cover. This is a good time to dig down and vacuum/blow out debris from your cowl cavities

All the AM radio trucks I've had came with solid masts. I think telescoping was an accessory. The ideal length for FM is 31" and that's why anything with AM/FM will have a solid mast 30-32"
Rule 468

The scientific answer to antennas is 468. 468 devided by your frequency (101.5) will give you a half wave. Which works fantastic for things like in home stereos. However, devide that number by 2 and you get a quarter wave. So 468/101.5/2 = 2.305 feet or 27.66 inches to tune in perfectly. the 31" antennas will cover up to 108mhz or the top of the FM scale for vehicles.

This is more for Frequency Modulation not Amplitude Modulation. I mean scale is same for both but 1/4 wave antenna isn't the ideal for AM. There are ways of tweaking both. (different methods)
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