On Fri, 21 May 2004 09:21:44 -0400, "Jack Painter"
wrote:

"rhymer" wrote
What is the best way to use one feed line for more than one dipole?
Or, is it better to use a coax switch in the shack?

Ron, your subject line "Two dipoles on one coax" implies the typical antenna
selector switch that leaves no question (of course you can do that). But the
message body asks about one feedline for more than one dipole as opposed to
the antenna selector. The two choices are so unequal that a comparison is
not possible.

I have no idea what you mean by "typical antenna selector switch".

Someone may explain here that they have connected more than one antenna with
a single feedline, but it flies in the face of proper operating procedure.
Most operators however do use antenna selector switches to provide more than
one antenna choice to a given receiver or transmitter. The individual
antennas always have their own individual feedline in those cases.

Yes, I was referring to more than one dipole on a single feed line (in
my case two dipoles 40 and 15).

Thanks, Ron

Best regards,

Jack Painter
Virginia Beach

rhymer wrote:

On Fri, 21 May 2004 09:21:44 -0400, "Jack Painter"
wrote:

"rhymer" wrote
What is the best way to use one feed line for more than one dipole?
Or, is it better to use a coax switch in the shack?

Ron, your subject line "Two dipoles on one coax" implies the typical antenna
selector switch that leaves no question (of course you can do that). But the
message body asks about one feedline for more than one dipole as opposed to
the antenna selector. The two choices are so unequal that a comparison is
not possible.

I have no idea what you mean by "typical antenna selector switch".

Someone may explain here that they have connected more than one antenna with
a single feedline, but it flies in the face of proper operating procedure.
Most operators however do use antenna selector switches to provide more than
one antenna choice to a given receiver or transmitter. The individual
antennas always have their own individual feedline in those cases.

Yes, I was referring to more than one dipole on a single feed line (in
my case two dipoles 40 and 15).

Thanks, Ron

You might try something like this:

http://www.hamuniverse.com/multidipole.html

73, AC6XG

"rhymer" wrote in message
news
Yes, I was referring to more than one dipole on a single feed line (in
my case two dipoles 40 and 15).

OM,

Since a dipole will also work on the third harmonic of its design frequency,
it's very common to use a 40 M dipole on 15. You usually don't need a second
dipole to work 15 if you already have one for 40.

As other have pointed out, however, it's perfectly fine to put dipoles for
other bands on the same feedline: 20, 17, or whatever. The antenna that's
not in resonance presents a high impedance to the feedline, and the resonant
dipole takes the power.

HTH.

73, Bill