Re: More Amrad notes
- From: r2000swler@xxxxxxxxxxx
- Date: Thu, 29 Nov 2007 04:10:53 -0800 (PST)
On Nov 28, 9:51 pm, N9NEO <powersupply...@xxxxxxxxxxx> wrote:
I mentioned that I would post a comparison between Amrad and PA0RDT
and maybe loop too. I just want to say project has been delayed. I've
got Amrad mounted in a quiet corner of the lot with a good ground. I
ordered some nice coax today for the PA0RDT so I should be up and
running in a few days. From what (very limited) testing I've done so
far the Amrad does a nice job of pulling them in. I did hear the
local 1180am station way down the band so I will have to check that
out. Plenty of beacons and MW stations in there, but I wouldn't be
surprised if the MW loop outperforms in BC band. Overall I'm
impressed with the performance as it is good for everywhere I listen.
I used a 3 foot piece of 3/16" brazing rod with a 2' piece of 1/16"
brazing rod attached on top.
more later,
NEO
Visit the Kongsford web site and look at "The Dallas Files"
The Amrad was derived Dallas Lankffords works.
There are several udated variations that work much better then the
Amrad.
<http://www.kongsfjord.no/dl/dl.htm>
The dipole versions are nice because they can be rotated to null
noise,
or peak a signal.
If an active dipole dipole is mounted so the center can swivel and
allow the
antenna to rotate, you can rapidly check the effects of polarization
of a
signal. And see how the SN ratio changes.
For a derivative of the PA0RDT antenna that works very well
<http://www.kongsfjord.no/dl/Antennas/Simplified%20Complementary
%20Push-Pull%20Output%20Active%20Whip%20Antennas.pdf>
I still have trouble accepting that a micro antenna acutely works!
Terry
.
- References:
- More Amrad notes
- From: N9NEO
- More Amrad notes
- Prev by Date: Will Performance Royalties Kill HD Radio?
- Next by Date: Re: FAQ # 1 - What is "HD" Radio ? [Was : Radio Listening Declines]
- Previous by thread: Re: More Amrad notes
- Next by thread: Ferrite rod antennas
- Index(es):
Relevant Pages
|
