Pixel Technologies "AM-2" Ultimate AM Broadcast Band Antenna
RHF
Pixel Technologies "AM-2" Ultimate AM Broadcast Band Antenna
http://store.xmfanstore.com/pixel-technologies-ultimate-am-broadcast-band-antenna-am1.html
SPEC SHEET Ultimate AM Broadcast Band Antenna (Model AM-2)
-by- Pixel Technologies
http://www.pixelsatradio.com/PDF/AM-2_Cut_Sheet.pdf
Older & Larger 38"
Pixel "AM-1" High Gain Amplified AM Loop Antenna
http://www.amazon.com/dp/B0036ZHPIQ
http://www.amazon.com/gp/product/images/B0036ZHPIQ
http://www.solidsignal.com/pview.asp?mc=03&p=AM-1&d=Pixel-AM1-High-Gain-Amplified-AM-Loop-Antenna-%28AM1%29&c=AM-FM%20Radio%20Antennas&sku=
?another?
http://www.amazon.com/dp/B004AFQD5C
Anyone using either of these AM Loop Antennas ?
How do they perform ?
i want to know ~ RHF
.
hallic...@collins.net
Using this antenna - 3 ft version:
http://www.angelfire.com/mb/amandx/loop.html
12 turns #12 spaced .4 in. center to center apart w pickup loop 2 in.
from main loop. Will not overload my SDR. Tunes approx. 380 kHz to 2.1
MHz - top freq. depending on how much coax you feed it with. I used #
12 because I already had 2000 ft. Cost about 15 bucks for wood and
capacitor.
If you buy an amplified loop make sure it has a gain adjustment or it
will probably overload the radio.
Jim(MI)
John Smith
> Newer& Smaller 25"
> Pixel Technologies "AM-2" Ultimate AM Broadcast Band Antenna
> http://store.xmfanstore.com/pixel-technologies-ultimate-am-broadcast-band-antenna-am1.html
>
> SPEC SHEET Ultimate AM Broadcast Band Antenna (Model AM-2)
> -by- Pixel Technologies
> http://www.pixelsatradio.com/PDF/AM-2_Cut_Sheet.pdf
>
> Pixel "AM-1" High Gain Amplified AM Loop Antenna
> http://www.amazon.com/dp/B0036ZHPIQ
> http://www.amazon.com/gp/product/images/B0036ZHPIQ
> http://www.solidsignal.com/pview.asp?mc=03&p=AM-1&d=Pixel-AM1-High-Gain-Amplified-AM-Loop-Antenna-%28AM1%29&c=AM-FM%20Radio%20Antennas&sku=
> ?another?
> http://www.amazon.com/dp/B004AFQD5C
>
> Anyone using either of these AM Loop Antennas ?
>
> How do they perform ?
>
> i want to know ~ RHF
> .
Give me a 10 foot chunk of copper tubing, a variable capacitor, some
wire and a plastic junction box and I can make one a heck of a lot
cheaper than $329.99 ...
Regards,
JS
Brenda Ann
<hallic...@collins.net> wrote in message
news:178ud6dtaf3d1v6o9...@4ax.com...
Pretty sure Angelfire went bye-bye some time ago. I used to have a website
there back in the day, but they closed all their sites, IIRC.
hallic...@collins.net
Brenda Ann
<hallic...@collins.net> wrote in message
news:bsgud6tom93q3elra...@4ax.com...
All I get is a 404 error page.
cuh...@webtv.net
hallic...@collins.net
>>>> Using this antenna - 3 ft version:
>>>>
>>>> http://www.angelfire.com/mb/amandx/loop.html
>>>>
>>>> 12 turns #12 spaced .4 in. center to center apart w pickup loop 2 in.
>>>> from main loop. Will not overload my SDR. Tunes approx. 380 kHz to 2.1
>>>> MHz - top freq. depending on how much coax you feed it with. I used #
>>>> 12 because I already had 2000 ft. Cost about 15 bucks for wood and
>>>> capacitor.
>>>>
>>>> If you buy an amplified loop make sure it has a gain adjustment or it
>>>> will probably overload the radio.
>>>>
>>>> Jim(MI)
>>>
>>>Pretty sure Angelfire went bye-bye some time ago. I used to have a website
>>>there back in the day, but they closed all their sites, IIRC.
>>>
>>>
>> It looks like its <angelfire.lycos.com> now but the web site link
>> still checks out here as is.
>>
>> Jim
>
>All I get is a 404 error page.
>
>
Here's a decent looking kit version of this type of loop:
http://www.radiointel.com/review-amloop.htm
Jim
cuh...@webtv.net
I looked at some of that, and then (den, Emma come first) I went to
http://www.tvpredictions.com
Why Aren't More People Watching HD?
Because HD Sucks, that's why.
cuhulin
hallic...@collins.net
<rhf-new...@pacbell.net> wrote:
Here's a site with a remote tuner for a loop (how to build):
http://thorburn.org/gary/loop/
Jim
John Smith
> ...
> Here's a site with a remote tuner for a loop (how to build):
> http://thorburn.org/gary/loop/
>
> Jim
The expensive pixel loop is "shielded", don't forget. You are going to
have to shield the turns and stop local electrical field noise pickup,
hence, the length of copper tubing I mentioned ... aluminum could work ...
If you want a VERY close to exact copy ... somehow, I think most have
missed that.
Regards,
JS
RHF
> On 11/13/2010 10:42 AM, RHF wrote:
>
>
>
> > Newer& Smaller 25"
> > Pixel Technologies "AM-2" Ultimate AM Broadcast Band Antenna
>
> > SPEC SHEET Ultimate AM Broadcast Band Antenna (Model AM-2)
> > -by- Pixel Technologies
> >http://www.pixelsatradio.com/PDF/AM-2_Cut_Sheet.pdf
>
> > Older& Larger 38"
> > Pixel "AM-1" High Gain Amplified AM Loop Antenna
> >http://www.amazon.com/dp/B0036ZHPIQ
> >http://www.amazon.com/gp/product/images/B0036ZHPIQ
> > ?another?
> >http://www.amazon.com/dp/B004AFQD5C
>
> > Anyone using either of these AM Loop Antennas ?
>
> > How do they perform ?
>
> > i want to know ~ RHF
> > .
>
> Give me a 10 foot chunk of copper tubing, a variable capacitor, some
> wire and a plastic junction box and I can make one a heck of a lot
> cheaper than $329.99 ...
>
> Regards,
> JS
50 Foot Coil 1/4" O.D. Copper Tubing
http://www.amazon.com/gp/product/B002OUAVFS
Builds a 15~16 Foot Diameter Loop Antenna
.
John Smith
> ...
> 50 Foot Coil 1/4" O.D. Copper Tubing
> http://www.amazon.com/gp/product/B002OUAVFS
> Builds a 15~16 Foot Diameter Loop Antenna
> .
>
Actually, you would form an ~10 foot chunk of copper tubing into a ~3 ft
loop. Then you would thread many turns of insulated copper wire though
the tubing, sufficient to resonate across the AM band with a variable
cap. The ends of the copper tube would be insulated from each other,
that would be the purpose of the plastic junction box, which the two
ends of the tubing would be attached to.
This would give you the shielding for e-field shielding for the loop ...
years ago I built one, but a six foot diameter, when I was in my teens.
It hung on either a north or south wall, or a east or west wall, as
was appropriate for direction I wished to search for stations in. It
worked quite well.
Now a days, with MMIC GaAs devices, a low noise preamp would be very
simple to use as a preamp and very low noise. Something like this:
http://cgi.ebay.com/MSA-0486-Silicon-Bipolar-MMIC-Amplifier-LOT-20-/220694429261?pt=LH_DefaultDomain_0&hash=item336269be4d
Good to 3.2GHz.
Regards,
JS
cuh...@webtv.net
patented.
cuhulin
John Smith
You only need to worry about a patent if you were selling them. Anyway,
such a simple idea as a shielded loop probably was never patented. If
it was, that patent must have expired long, long ago ... only now-a-days
do they allow patents to run forever.
Regards,
JS
RHF
IIRC the Welbrook 'Patent' is for their Low Noise
Amplifier used with the Loop Antennas. ~ RHF
.
John Smith
> ...
> IIRC the Welbrook 'Patent' is for their Low Noise
> Amplifier used with the Loop Antennas. ~ RHF
> .
Sounds right. And, like I said, with a MMIC device, the performance of
that amp can easily be matched, and I would expect, exceeded --
depending on the device chosen the filters used, etc.
Regards,
JS
hallic...@collins.net
The box loop I built does exceptionally well at rejecting local
interference. That's the main reason I have not torn it apart or
bought something better.
Jim
RHF
> On Sun, 14 Nov 2010 16:49:00 -0800, John Smith
>
>
>
> >On 11/14/2010 3:19 PM, hallicraf...@collins.net wrote:
>
> >> ...
> >> Here's a site with a remote tuner for a loop (how to build):
> >>http://thorburn.org/gary/loop/
>
> >> Jim
>
- You are going to have to shield the turns and stop
- local electrical field noise pickup,
- hence, the length of copper tubing I mentioned ...
- aluminum could work ...
Some where I remember seeing a Loop Antenna
make out of a Hula-Hoop with the Wires inside it.
Then the builder took Aluminum Foil Tape and
Ran it around the OD and then pressed it down
onto and around the surface of Hula-Hoop.
http://www.shop3m.com/70006068806.html
Claim that it worked better with the Grounded
Foil Cover. I always though that the Foil Tape
should have been Spiral Overlapped Wrapped
around the Hoop.
http://www.saveguard.com/exhausts/images/Thermolastic24.JPG
FWIW - I find many insanely creative uses
for Aluminum Foil Tape :
Two {Foi}l Heads Are Better Than One !
http://4.bp.blogspot.com/_S1qzYpCO2JE/STXFXgKCCFI/AAAAAAAAAqw/POIKzxKuMzM/s400/boobiesinspace.jpg
-IF- You Are Not Wrapped Too Tight...
http://i186.photobucket.com/albums/x58/BamaBat_photo/Duct%20Tape%20Dummy/CAM_0100.jpg
However... It Can Affect The Children Too ;;-}}
http://farm1.static.flickr.com/33/58234959_f68d7132da.jpg
- - If you want a VERY close to exact copy ...
- - somehow, I think most have missed that.
- - Regards,
- - JS
- The box loop I built does exceptionally well at rejecting local
- interference. That's the main reason I have not torn it apart or
- bought something better.
-
- Jim
A well make proportional symmetrical Loop Antenna
is a naturally balanced device.
http://cache2.smarthome.com/images/7744ad.jpg
http://www.suertenich.com/html/radios/mag_loop.jpg
http://i15.photobucket.com/albums/a384/PaulCoats/PaulsUltimateLoopE.jpg
http://en.wikipedia.org/wiki/Loop_antenna
Plus the Small Loop Antenna's Radiation Pattern
allows it to be 'positioned' to
Peak a/o Null Distant Signals
http://www.iw5edi.com/ham-radio/files/Loop_antenna.gif
and/or Local Noise Sources
http://www.ycars.org/EFRA/Module%20C/AntLoo4.gif
How to Build a 'Tuned' Loop Antenna
http://www.iw5edi.com/ham-radio/?how-to-build-a-tuned-loop-antenna,118
Magnetic Loop Antenna
-by- Alexandre Grimberg [PY1AHD]
http://www.alexloop.com/artigo3.html
.
.