Miller - Compact {Passive} Shortwave Receiving Antenna

[RHF]

Hello, Is anyone using the Miller :
Compact {Passive} Shortwave Receiving Antenna
Performance ?
Results ?
Value ?
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Miller - Compact {Passive} Shortwave Receiving Antenna
with built-in Magnetic Longwire Balun coverage 1.8 - 30MHz
http://www.wsplc.com/pages/pdf/miller.pdf
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My-Take : The Miller would appear to be a relatively short
(about 2 Meters Long) Off-Center Fed Verical Dipole Antenna
with a Matching Transformer and SO-239 Connector for a Coax
Cable Feed-in-Line to the Radio/Receiver.
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Waters & Stanton (PLC)
http://www.wsplc.com/
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iane ~ RHF
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[sdan...@nyc.rr.com]

RHF, go to Ebay and look up auction number 5817402367. I think that's
more your speed.

Steve

[RHF]

Steve :o)
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Wow a Granger/Andrew 747CD HF Log Periodic Antenna
IMAGE => http://i9.ebayimg.com/02/i/04/fd/ec/9c_0.JPG
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5817402367
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Gad Zooks - There Be Giants ! ~ RHF
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[Tom Holden]

"RHF" <rhf-new...@pacbell.net> wrote in message
news:1128880905.0...@g49g2000cwa.googlegroups.com...

Now to find a rotator....

[Ross]

I wouldn't argue with real-life experience, but here's my take based on
a wobbly grasp of theory:

Since it's a passive design, the amount of signal captured is limited
by its very short 2m length, which is considerably under 1/10th
wavelength for many SWL frequencies in heaviest use right now as the
solar cycle has waned. So although it is potentially *very* quiet, I'd
predict its performance would rely quite heavily on having a quiet,
low-noise receiver.

So for a good tabletop, it might do well. For a noisier radio, you
might as well forget it.

Performance would also depend on being mounted relatively far from
local electrical noise sources -- so you wouldn't want to mount it
close to a house with PCs and electronic gizmos running while you SWL.
That's because, even though a passive antenna won't add (more than a
tiny bit of thermal) noise, if it picks up local noise it's going right
down the coax into your receiver.

A few years ago I did a ton of experiments with homebrew antennas with
9:1 transformers in different configurations, and came to the
conclusion that all of those options were inferior to a Wellbrook loop
(which is an active design, btw.) Even with a Drake R8B, which is no
slouch of a radio.

-- Ross