clanusb
Member
Hello everyone! Thank you for taking your time to read and help me with my antenna issue. I've read on here that the Larsen 27 is the best antenna for CB, and since all my other antenna's are Larsen as well, I was already sold.
The setup:
2005-2007 Super Duty Crew Cab Short Bed body style with a sunroof, which pretty much eliminates the roof for antenna installation. I have a headache rack for this purpose. (Yeah...I know, not the best, but it works, and I see plenty of these set ups that don't have any issues.)
I have a NMO Larsen 2/70B mounted on my headache rack via a welded L bracket, and it works flawlessly with my Yaesu 8800r.
The left front fender has a no drill (uses a preexisting bolt) NMO Z bracket on it for the Larsen 27B. It was purchased from theantennafarm. It has a star washer underneath it, and has great electrical ground. The NMO27 has a coil, no spring, and was cut per the Larsen chart to 47.5".
The coax is RG-58, continuity tests good in all aspects and is loosely coiled under the console.
I have tried everything I can think of, but still consistently get a SWR of 3.5+.
I swapped it to the headache rack mount with the same results, placed it on a Larsen magmount with the same results. I have tried a different radio with the same SWR. I have tried a different antenna (Firestik II) with the same SWR.
I am out of ideas. Besides trying a ground strap from the bolt on the mount to another good ground on the frame.
Thank you for your help.
The setup:
2005-2007 Super Duty Crew Cab Short Bed body style with a sunroof, which pretty much eliminates the roof for antenna installation. I have a headache rack for this purpose. (Yeah...I know, not the best, but it works, and I see plenty of these set ups that don't have any issues.)
I have a NMO Larsen 2/70B mounted on my headache rack via a welded L bracket, and it works flawlessly with my Yaesu 8800r.
The left front fender has a no drill (uses a preexisting bolt) NMO Z bracket on it for the Larsen 27B. It was purchased from theantennafarm. It has a star washer underneath it, and has great electrical ground. The NMO27 has a coil, no spring, and was cut per the Larsen chart to 47.5".
The coax is RG-58, continuity tests good in all aspects and is loosely coiled under the console.
I have tried everything I can think of, but still consistently get a SWR of 3.5+.
I swapped it to the headache rack mount with the same results, placed it on a Larsen magmount with the same results. I have tried a different radio with the same SWR. I have tried a different antenna (Firestik II) with the same SWR.
I am out of ideas. Besides trying a ground strap from the bolt on the mount to another good ground on the frame.
Thank you for your help.