Transmissions on Helical Antenna
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Has anybody had any experience using a helical antenna for
transmissions. I put a small helical antenna (65' 14# wire, 172 turns
on 1-3/8" dowel) on my antenna tuner: on 40 meters (7MHz) the SWR was
about 8:1; on 15 meters (21MHz) the SWR was 1.6:1). I thought the 40M
would tune better than the 15M because 65' is about 40M's 1/2 wl.
My antenna tuner manual suggested a balun to tune in any band that
doesn't initially tune-up. I'm thinking the ubiquitous 4:1 balun.
Suggestions, comments?
Tnx,
--
MGFoster:::mgf00 at earthlink decimal-point net (KI6OFN)
Oakland, CA (USA)
** Respond only to this newsgroup. I DO NOT respond to emails **
-----BEGIN PGP SIGNATURE-----
Version: PGP for Personal Privacy 5.0
Charset: noconv
iQA/AwUBR6qI8IechKqOuFEgEQKzawCgwPU9ErKBDDE1xamd8J7VsG TMoA8AnA8D
E6yD+U7jazXUrjjny0PRX74g
=8JHd
-----END PGP SIGNATURE-----
|