[TowerTalk] Wire antenna?
xdavid at cis-broadband.com
Sun Jun 30 17:26:35 EDT 2019
The EFHW-8010 gets rave reviews, but I'm fundamentally suspicious of any
antenna that covers that wide a range without tuning. There have to be
losses somewhere to get that.
Those same reviews also claim similar results for installations 6 feet
off the ground versus 60 feet. That also doesn't make sense given the
effect that ground typically has on the feedpoint of a horizontally
polarized antenna without a lot of loss.
I couldn't find anyone who had done a real time A vs. B comparison
against, for example, a center fed dipole at 40 feet on 20 meters. I'm
not saying that the EFHW-8010 isn't a practical single antenna for a
given set of constraints, but I'd bet a lot of money that you could do
better with a collection of other properly chosen wire antennas if you
have the space (presumably you do if you can put up a 130' long
EFHW-8010) and some decent trees.
And if your ground conductivity isn't too bad, I'd even consider an
Inverted-L or two with VOR-type counterpoises before I'd rely on
something that physically shouldn't work without a lot of loss ...
especially if the distance from the antenna to the shack is short enough
that you could use a tuner for operation on multiple bands without a lot
of feedline loss due to SWR.
My two cents worth ...
On 6/30/2019 9:34 AM, k7lxc--- via TowerTalk wrote:
> Howdy, TowerTalkians -
> I'm interested in putting up a wire antenna that I can use on HF. The myantennas.com EFHW-8010 looks interesting. This one claims No tuner required. I'd also consider an all-band ladder line fed dipole. Any recommendations and/or feedback appreciated.
> I'll build my own if I knew what good wire (probably should be insulated as it'll be amongst lots of trees and other vegetation), center insulator and ladder line to use. TIA!
> Cheers,Steve K7LXC
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