Re: [amsat-bb] GRRRRRRRRRRR!

["Christopher Cox" <cobox@xxxxxxxx>]

One reason I can think of has to do with the interaction between the 2
meter and 70 cm elements.

Configured as a +, the 70cm and 2meter elements belonging to the antenna
next to it would be parallel with each other.
In an X configuration, the 70cm and 2meter elements belonging to the
antenna next to it are on different planes.

This may cause more 2meter transmit to 70cm receive desensing.

Just an idea.

Christopher Cox


> Hi,
> OK, I am aware of the issue of the separation causing an elliptical
> polarisation, that separation being needed to avoid detuning an
> antenna that was designed for working alone.
> What I had in mind was that instead of mounting the antennas
> at 90 degrees to each other, mount at 80 ? or 100 ? degrees,
> i.e. -40 ,+40 or -60 ,+60 degrees, or some other skew depending
> on the spacing. Like an X, rather than a tilted cross.
> Does that compute ?
> 73 Jens    ZL2TJT

----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org