[amsat-bb] Re: satellite metallic cross boom

Stephen E. Belter seb at wintek.com
Thu May 2 19:33:50 PDT 2013


I'm assuming you're talking about circularly polarized antennas.

The short answer is yes, you can use a metallic cross boom if you:
(1) mount both antennas in an X orientation to the boom, *and*
(2) avoid having the cross boom 0.5-wavelength, 1.0-wavelength, etc. away
from the driven element.

The full article written by Kent Britain (of cheap-yagi fame) is on Howard
Long's (of LVB Tracker and FUNcube dongle fame) web site:


Good luck with your project; have a great trip!

73, Steve N9IP
Steve Belter, seb at wintek.com

On 5/2/13 9:18 PM, "Lizeth Norman" <normanlizeth at gmail.com> wrote:

>Hi all,
>Am down in Peru working on the club station. The antennas are mounted on a
>metallic cross boom. The antennas are carbon copies of each other in terms
>of position. I read on the internet that one should be rotated 45 degrees.
>Is this an old wives tale? I can fix the problem as one of the antennas
>will partially down to rehab it.
>Norm n3ykf
>Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
>Not an AMSAT-NA member? Join now to support the amateur satellite program!
>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

More information about the AMSAT-BB mailing list