11 meter (cb) free band, mobile diy antenna from s.s.wips/s.s.springs

[Mudduckmobile]

any help on this. i have 3 s.s. wips , 3s.s .springs, and 20 ft. of 1 1/2 steal box tube.
102 in. wip, spring (rad).
102 in. wip, spring, 8in. extender (ref).
96 in. wip, spring, (dir).
end mounted all.
radiator insulated from steal mount
mounted to top of pick up truck lumber rack.
i have mfj259C to help out.
anyone got some thoughts?

 

[Robb]

A 102" SS whip with a 4-8" spring is going to work for a CB. They are usually very broadbanded if installed correctly, so it should cover most of the freeband by default. You will probably find this out when you check it with your MFJ analyzer anyway . . .

But if you want to make a beam on a vehicle/truck, It really wouldn't be effective unless it was at least 18 ft off of the ground (in this case, 18 ft above the highest point of your truck). Otherwise, it would lose too much energy due to ground losses. Not to mention, it would be a pain in the butt to tune it so close to so much metal of the vehicle. Better off mounting it as a SS whip was intended. Or build the beam for a base station with a rotor.

 

[Mudduckmobile]

A 102" SS whip with a 4-8" spring is going to work for a CB. They are usually very broadbanded if installed correctly, so it should cover most of the freeband by default. You will probably find this out when you check it with your MFJ analyzer anyway . . .

But if you want to make a beam on a vehicle/truck, It really wouldn't be effective unless it was at least 18 ft off of the ground (in this case, 18 ft above the highest point of your truck). Otherwise, it would lose too much energy due to ground losses. Not to mention, it would be a pain in the butt to tune it so close to so much metal of the vehicle. Better off mounting it as a SS whip was intended. Or build the beam for a base station with a rotor.

Robb, you are right. I run a 102 w/ spring now center mounted on top of ladder rack w/ 8x5.8 ft. copper sheet under it. i was just thinking of trying the "beam" i like to play with antennas. i'm still going to try.....i just need to find a way to kill the ground.

 

[9C1Driver]

If a mobile beam actually worked every antenna maker would already have one on the market for sale. I'm talking about one that you can drive with, not fold down while moving and set up when in a parking lot.

 

[Mudduckmobile]

If a mobile beam actually worked every antenna maker would already have one on the market for sale. I'm talking about one that you can drive with, not fold down while moving and set up when in a parking lot.

I tried my plain, and it was a big no go! but when I moved it up to 20 ft. it worked quite well, I spoke to 1144 N.Z. on 27.38500 lsb. at 3:21pt yesterday after noon with a +20 report from him on his base in Christchurch, NZ. I was running my yeticom optima mklll.
and with 50 w. I will not be using that beam any more as it took 2.5 hrs to set up, i can set up my moxon with the 30ft. push pole faster in the field. I will not let that stop me, as will will come up with a cheep and EZ way to run a mobile beam that works.