anntenas ground plains and being off balcnce

[kb9rqz]

being new at this and the weather cold and icey and one those guy in affected by feb 23 I have put a retuned CB magmount onear the edge of a large metal roof

what have doen to the patteren and gain or whatevrer effects I may have just created by taking this route till spring and warmer weather arrives

[w2amr]

For which band?

[kb9rqz]

being new at this and the weather cold and icey and one those guy in affected by feb 23 I have put a retuned CB magmount onear the edge of a large metal roof

what have doen to the patteren and gain or whatevrer effects I may have just created by taking this route till spring and warmer weather arrives
10 m it tunes as resonate on the swr analer but it it placed on the edge of the roof rather than being more cntral and on better ground plain

[WB5MJT]

I believe you'll get better radiation toward the direction of the most ground. But like 6 meters, if 10 meters opens up, it won't much matter. A mag mount isn't always the best ground anyway. I ran a 10 meter vertical on an 18" square of sheet metal nailed to a corner of my patio fence and worked 6 countries and 48 states on 10 when the band opened on 50 watts. Otherwise, it was all local.

Rick
WB5MJT

[N3ATS]

being new at this and the weather cold and icey and one those guy in affected by feb 23 I have put a retuned CB magmount onear the edge of a large metal roof

what have doen to the patteren and gain or whatevrer effects I may have just created by taking this route till spring and warmer weather arrives

Like MJT said, generally you will notice a lobe in the direction of the ground. In other words, a significant portion of your radiated signal will travel in the direction of the metal, and less towards the edge near where the antenna is mounted.

A way to picture this is if you have the antenna mounted on the driver's side rear of a car, most of your energy will be towards the passenger side front.

Be careful using a CB antenna, some of the cheaper ones cannot handle amateur radio power levels. Wilson base loaded antennas will, and most of the heavy aluminum ones with the exposed coil should be okay. Radio Shack type stuff? No.

[KC8TCQ]

being new at this and the weather cold and icey and one those guy in affected by feb 23 I have put a retuned CB magmount onear the edge of a large metal roof

what have doen to the patteren and gain or whatevrer effects I may have just created by taking this route till spring and warmer weather arrives

Like MJT said, generally you will notice a lobe in the direction of the ground. In other words, a significant portion of your radiated signal will travel in the direction of the metal, and less towards the edge near where the antenna is mounted.

A way to picture this is if you have the antenna mounted on the driver's side rear of a car, most of your energy will be towards the passenger side front.

Be careful using a CB antenna, some of the cheaper ones cannot handle amateur radio power levels. Wilson base loaded antennas will, and most of the heavy aluminum ones with the exposed coil should be okay. Radio Shack type stuff? No.


102" whip kicks butt with a tuner.

[kb2vxa]

"Be careful using a CB antenna, some of the cheaper ones cannot handle amateur radio power levels."

Don't you mean be careful using an Amateur antenna, most cannot handle CB radio power levels?

[N3ATS]

LOL, yeah that too! :mrgreen:

And I just got up....