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Using matching antennas with the CORRECT matching coax a dual will give slightly better performance if the antennas are spaced 1/4 wave-lenght apart.
Creating ALL the right conditions to properly install dual antennas is NOT a easy task. While some think all it takes just adjusting the SWR and that is all. It really is a lot more than simply adjusting the SWR. Things like having the coax routed correctly and having a good ground are just a few of the many things that should be done to correctly install antennas.
My feeling is it is not worth the added expense and work needed to use a duel antenna system. I would mount the antenna on the driver's side and use the closest needed lenght coax to reach from the antenna to the CB. Make sure you have a super ground. Tune it to the Lowest SWR and use it.
I would use something in the range of a 4' - base loaded steel whip for an antenna.
I agree with you, co-phasing is not easy and IMO not worth it.Originally Posted by kc0iv
I would suggest you keep using this CB shop. He/she appears to be a rare person -- HONEST.Using matching antennas with the CORRECT matching coax a dual will give slightly better performance if the antennas are spaced 1/4 wave-lenght apart.
Creating ALL the right conditions to properly install dual antennas is NOT a easy task. While some think all it takes just adjusting the SWR and that is all. It really is a lot more than simply adjusting the SWR. Things like having the coax routed correctly and having a good ground are just a few of the many things that should be done to correctly install antennas.
My feeling is it is not worth the added expense and work needed to use a duel antenna system. I would mount the antenna on the driver's side and use the closest needed lenght coax to reach from the antenna to the CB. Make sure you have a super ground. Tune it to the Lowest SWR and use it.
I would use something in the range of a 4' - base loaded steel whip for an antenna.
However Lockheed Martin conducted a test to see how different antenna configurations affected the transmission patterns, and they say that co-phased is the "best for highway". I use a single wilson 2000 w/ 18" shaft on the right side so it transmits strongest across the median.