Antenna location

Replies to This Discussion

Permalink Reply by opg4759 on September 29, 2010 at 12:30pm

I"ve been very successful with my Diamond 2m/440 dual band antenna on my non All-Pro Bandi mount. I've swept it with a MFJ-269 antenna analyzer and my match is damn near 1 to 1 across both bands I think I spike 1.3 to 1 at the highest point in 70cm. Sure you will get a bit of blocking with the antenna radiating into the D piller but I've yet to not be able to hit a repeater I've wanted to.

I've talked with Leonie and Bozly about a Ham specific mount from them since the mounting plate needs to be bigger to accommodate a UHF or N or NMO connector compared to a 3/8" connector. I plan on talking with Bozly about it on Saturday.

Permalink Reply by manoweb on September 29, 2010 at 12:45pm

My concern is not much about SWR, but that position does not really offer a great ground plane like a flat roof below the antenna would do, and for this reason create a radiation pattern that is suboptimal, changes the quality of the communication depending on the direction I am driving etc...

Sure, one should do tests, and this kind of test require lots of time and effort... as the antenna is by far the most important component in the system, I always strive for the best location possible.

But maybe you are right, I should try the rear location first and see how it goes, and maybe compare it with a roof magnetic mount.