distance between two antennas

[spongbob]

Hi guys, spongbob here, I'm thinking about mounting a Maco v 5000 ground plane above my m107 flat beam.My ? is how much distance above the beam do I need ? Thanks in advance.

 

[sp5it]

3m should be fine.

 

[spongbob]

ok, thanks for the info.

 

[fourstringburn]

Maybe someone more knowledgeable can answer this.

I've seen vertical antennas with no radials sitting right on top of a horizontal beam. I suspected the beam would provide the ground plane because the vertical was directly above it.

If both antennas are for the same band, it seens logical to assume so.

 

[unit_399]

I contacted Tom Charles at MACO Antennas about this and this was his reply:

"Customers usually start by mounting the V58 between 2-3 feet above the Maco 107. If the SWR is high on the V58 and good on the 107 you just keep raising the V58 up until the SWR is acceptable on both antennas.
Customers usually end up with a spacing anywhere from 2 to 7 feet above the beam."

- 399

 

[Jay Mojave]

You will want the ground plane radials going the same way as the beams elements and boom.

Jay in the Mojave