can a base antenna be too high ?

[BOOTY MONSTER]

What?

i thought the same thing too 888 .

http://www.worldwidedx.com/installa...-base-station-setup-diagram-3.html#post193496

 

[TonyV225]

Yes please explain this.

 

[GnG8d]

For Local or Line of Sight work: HEIGHT is your friend. For global DX'ing however, Salt Water can be your friend. You can be a 1' above sea level, in your mobile, at the beach, and hear stations 1/2 way around the world you wouldn't stand a chance of hearing up on a hill or mountain.

That can easily go both ways and depending on the TX configuration and RX location be quite the opposite.

 

[Shockwave]

CT is absolutely right on this one. When you live in a location where there is a large body of salt water this becomes perfectly clear. There is no high place that I can drive to for working DX that compares to the propagation I get when parked at the beach. Better yet the gains go up even more when I go out on the boat and talk. You can park a few miles inland 1000 feet higher then me but I'll take sea level at the beach without even thinking about it for DX.

 

[Beetle]

You're not going to get ground wave at 27mhz.

That's very true. You might get "direct wave" or "surface wave", but not "ground wave".

The stations that benefit from true ground wave propagation are AM broadcast stations, and hams on the 160 meter band. Ground wave drops off as you get higher in frequency, and is nonexistent above about 3 MHz.

 

[Captain Kilowatt]

You're not going to get ground wave at 27mhz.

What?

i thought the same thing too 888 .

http://www.worldwidedx.com/installa...-base-station-setup-diagram-3.html#post193496

Yes please explain this.

That's very true. You might get "direct wave" or "surface wave", but not "ground wave".

The stations that benefit from true ground wave propagation are AM broadcast stations, and hams on the 160 meter band. Ground wave drops off as you get higher in frequency, and is nonexistent above about 3 MHz.

Beetle is right. Ground wave does not exist much above 3-5 MHz. What most people call ground wave is NOT true ground wave. IOW it is a wrong application of the name however in the CB world it has come to mean any communications that takes place without the aid of ionospheric reflection (skip).