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Originally Posted by FireRanger
Completely untrue. Cophasing has nothing to do with power.
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Okay are you so sure about that?
With power comes heat, I should know I have melted a couple of cheap antennas
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One additional reason has to do with power. Stock CB's leave the factory with the transmitter power limited to 4 watts but there is an underground market of linear amplifiers in existence. Inasmuch as power will eventually turn into heat, and the antenna will be required to dissipate that heat, two antennas will more than double the heat dissipation abilities of a single antenna.
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Taken from Firestik's webside found below:
CHOOSING SINGLE OR CO-PHASE ANTENNA SYSTEM
Quote:
Originally Posted by FireRanger
What you've read is incorrect, or you've misinterpreted it. Coax length to each antenna is critical and 18ft is bullshit. It depends on the setup, the antennas, and the type of coax. The antennas need to be 8ft apart for it to work regardless. You can not make up for either by doing something else.
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So are you claiming Firestik info as B/S, if so you may not know what you are talking about.
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20. If your ground plane is good, your mount grounded and, your antenna favorably located, coax length rarely becomes an issue. But, if one or more mismatches occur, you may find high SWR. This can often be corrected by using 18 feet lengths of high quality coax.
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this can be found here
Things Every CB'er Should Know