It doesn’t matter how the antenna is mounted , either X or + .

The best way to find out where a conductive crossboom passes the antenna is to make simulation with NEC , within the software you can adapt the length/diameter/position of the crossboom and find the spot where the interaction is less .

An advantage of mounting the antenna in + configuration that you can start from a V/H polarized antenna and can use this polarizations as well . An X mounted is more complex to achieve V/H , but then the X has the advantage of having all possible polarizations such as : V/H/-45/+45°  .

Best regards,

Kenny ON4DPX

Van: K4IDC via AMSAT-BB [mailto:amsat-bb@amsat.org]
Verzonden: zondag 10 september 2023 23:54
Aan: AMSAT-BB <amsat-bb@amsat.org>
Onderwerp: [AMSAT-BB] Cross Polarized Yagi: X or +

I'm new to this mode..

I was advised by someone I think is knowledgeable, and certainly more so than me, to orient my cross polarized 2m Yagi so that the elements resemble an X rather than a +. Easily enough done...what's the advantage? 

It's my understanding that the two sets of elements are out of phase by 90° & combined at the common feed point to emulate circular polarization. How does the rotation along the boom axis make a difference?

Seeking understanding...

Thanks,

Robin Midgett K4IDC