Last year I used an inverted V doublet, supported by a telescopic
carbon fibre pole (DK9SQ pole <http://www.qsl.net/dk9sq> and review at http://www.eham.net/reviews/detail/1094)
and fed by a short length of ribbon (300 ohms I think, the clear
plastic type) via an SG237. The doublet was not cut for any particular
band and I did not use a balun or redials etc. I worked PY from
Southern France (~5000 miles) on 20m with 100W SSB from an FT-857.
I haven't tried it yet, but I plan on doing the same again with my K3,
but via a BL2 this time.
73 de M0XDF, K3 #174
--
The universe is like a safe to which there is a combination. But the
combination is locked up in the safe.
-Peter De Vries, editor, novelist (1910-1993)
On 13 May 2008, at 16:37, Brian Lloyd wrote:
OK, I am convinced - keep the tuner and the wire. So, that brings up
a second question: balanced vs. unbalanced.
Wire antennas that do not require a counterpoise are usually loops
or dipoles, i.e. inherently balanced even if not resonant. Most
tuners offer an unbalanced output. SGC says, just connect up the
antenna. Seems to me that a balun would improve things and keep RF
off the coax and power leads to the tuner. But how well do baluns
handle huge mismatch?
Just off the top of my head, it seems to me that the tuner at the
top of a pole with two legs sloped down, i.e. inverted-V, would make
a pretty good omni all-band antenna.
More thinking aloud.
Brian Lloyd
Granite Bay Montessori School 9330 Sierra College Bl
brian AT gbmontessori DOT com Roseville, CA 95661
+1.916.367.2131 (voice) +1.791.912.8170 (fax)
PGP key ID: 12095C52A32A1B6C
PGP key fingerprint: 3B1D BA11 4913 3254 B6E0 CC09 1209 5C52 A32A
1B6C
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