Quote:
Originally Posted by Mister-B
Brothers has a different take on it, but I suppose they could be wrong
http://www.brotherstrucks.com/prodin...number=ANT6772
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This is an excellent reproduction of the original telescoping mast antennas that were used on the AM radio equipped trucks. Trucks with AM/FM radios used the solid mast."
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They were telescoping so you could increase or decrease the length to tune the receiver in better. Like I said above 1/4 length, middle of the scale (98 mhz) is ideal for FM. FM is up and down, up and down like waves on the water. AM is like a rainbow. AM bounces off the ionosphere. So at night when the "D" and "E" layers combine the signal will travel further and increase your reception.