Bindy wrote:
Can anyone tell me how to build a broadband hybrid combiner for 2
shortwave loop receiving antennas?
I need 45,-45 degrees of phase on the 2 loops from 1 to 30 mhz? I will
be mounting the combiner right at the antenna after the preamps.

Bindy

Thanks for all the suggestions. I pressumed it was possible. I see many
commercial antenna companies like TCI and R&S use hybrids with their
shortwave loops. I just pressumed that it was possible using small
ferrite cores. I cant find anything on google, theres d many references
to microwave hybrids.

Other phase angles might be possible, however 45 degrees ensures that
the loops when phased at right angles behave as a true omni
directional antenna from 1 to 30mhz. Which is the main reason i want to
pursue this option. I am using a MFJ 1026 noise canceller however its a
nuisance and unreliable when wanting consistent and repeatable
performance. It also cant rotate phase for the full 360 degrees.

So a fixed 45 degree hybrid would be ideal..

The search goes on

Thanks
Bindy