[amsat-bb] Re: antenna separation
hamoen at iae.nl
Tue Jan 20 23:35:03 PST 2009
I do not have the answer on which distance to apply really.
Just to share my experience:
- here at home I never have had any issue with de-sensing
and I do not use any filter or trick. with any of the
radios (ts2000, ft817, thd7) it all works fine.
- field operations:
I use no desensing filters either.
145mhz antenna straight to the ft817
435mhz antenna straight to the thd7
antennas clambed together on eachother
... well, in this set-up it makes a BIG difference
how I align the antennas. Moving one forward 1 cm does
make a big difference. (sliding the booms across eachother)
so not the boom2boom but element to element distance.
but that is applicable for arrow like setup, not for
permanent mounted constructions.
Mmm, I am afraid this information doesnt help you at all :-)
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