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Dear David, LF Group,
There are plenty of broadband active whip designs that will work up to
30MHz or more, mostly depending on the amplifier bandwidth. I imagine an issue
with using such a design on a satellite would be that it would have to work in
close proximity to VHF/UHF transmitters, which would be likely to grossly
overload the whip preamp without some sort of selectivity at the antenna, so
some kind of tuned whip or loop might be more appropriate. Another
possibility might be to design a diplexer/receive preamp to make use of an
existing higher frequency antenna element as the 29MHz receive
antenna.
Cheers, Jim Moritz
73 de M0BMU
----- Original Message -----
Sent: Monday, December 24, 2007 3:04
PM
Subject: LF: E-field probes.
Seasons greetings all.
Does anyone know if the e-field probe can be adatped to HF
frequencies?
Some of you will know I am a member of Amsat and we have an opportunity
where we could propose a single frequency 29MHz 'SSB' receiver on a
satellite. However, as we will not be allowed a large traditional
antenna. I wondered if I could propose an e-field probe for 29MHz.
Is there any data / design information anywhere which may help make a
decision?
Regards
David G0MRF
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