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-   -   7' SHIELDED LOOP (https://www.radiobanter.com/shortwave/37638-7-shielded-loop.html)

Dale Parfitt August 7th 03 01:33 PM

7' SHIELDED LOOP
 
Thought some here, in between political rants, might like to see some
pix of my 7' shielded loop. This has replaced the 3' version- a picture
of which is included.
Although the summer QRN is high, the new loop is proving itself with
NDB's that I have never copied before. The Burhans amp was modified to
allow reception up through 17 MHz. Local power line noise, TV switches
etc are gone.


http://www.parelectronics.com/pics_new/P1010023.JPG
http://www.parelectronics.com/pics_new/P1010024.JPG
http://www.parelectronics.com/pics_new/P1010025.JPG
http://www.parelectronics.com/pics_new/P1010026.JPG
http://www.parelectronics.com/pics_new/P1010028.JPG
http://www.parelectronics.com/pics_new/P1010027.JPG

Main loop is from 5/8" CATV hardline and CATV connectors. The vertical
support mast is thin wall fiberglass with aluminum inserts at each end
to allow clamping- the entire support weights less than 1 pound. Now, to
get it on the rotator/tower.

73,

Dale W4OP



Soames123 August 7th 03 02:00 PM

Dale;

A Seven Foot Loop . .
thanks for the post, very nice indeed !
( Garden looks nice too !)

Harvey




Subject: 7' SHIELDED LOOP
From: Dale Parfitt
Date: 8/7/2003 8:33 AM Eastern Standard Time
Message-id:

Thought some here, in between political rants, might like to see some
pix of my 7' shielded loop. This has replaced the 3' version- a picture
of which is included.
Although the summer QRN is high, the new loop is proving itself with
NDB's that I have never copied before. The Burhans amp was modified to
allow reception up through 17 MHz. Local power line noise, TV switches
etc are gone.


http://www.parelectronics.com/pics_new/P1010023.JPG
http://www.parelectronics.com/pics_new/P1010024.JPG
http://www.parelectronics.com/pics_new/P1010025.JPG
http://www.parelectronics.com/pics_new/P1010026.JPG
http://www.parelectronics.com/pics_new/P1010028.JPG
http://www.parelectronics.com/pics_new/P1010027.JPG

Main loop is from 5/8" CATV hardline and CATV connectors. The vertical
support mast is thin wall fiberglass with aluminum inserts at each end
to allow clamping- the entire support weights less than 1 pound. Now, to
get it on the rotator/tower.

73,

Dale W4OP











Al August 7th 03 05:52 PM

Impressive Dale, very impressive. I was considering a 4-foot loop to replace
my 3-foot (also hunting for NDBs) but I backed off because I thought it was
too much of a challenge. Now after seeing your 7-foot loop, I'm getting my
courage back to try again. Nice job.

Al
KA5JGV



"Dale Parfitt" wrote in message
...
Thought some here, in between political rants, might like to see some
pix of my 7' shielded loop. Dale W4OP




Slider August 7th 03 07:46 PM

Looks great Dale.... BUT Nortons says you have a 'Malicious Script' embedded
in '10024'.
"Dale Parfitt" wrote in message
...
Thought some here, in between political rants, might like to see some
pix of my 7' shielded loop. This has replaced the 3' version- a picture
of which is included.
Although the summer QRN is high, the new loop is proving itself with
NDB's that I have never copied before. The Burhans amp was modified to
allow reception up through 17 MHz. Local power line noise, TV switches
etc are gone.


http://www.parelectronics.com/pics_new/P1010023.JPG
http://www.parelectronics.com/pics_new/P1010024.JPG
http://www.parelectronics.com/pics_new/P1010025.JPG
http://www.parelectronics.com/pics_new/P1010026.JPG
http://www.parelectronics.com/pics_new/P1010028.JPG
http://www.parelectronics.com/pics_new/P1010027.JPG

Main loop is from 5/8" CATV hardline and CATV connectors. The vertical
support mast is thin wall fiberglass with aluminum inserts at each end
to allow clamping- the entire support weights less than 1 pound. Now, to
get it on the rotator/tower.

73,

Dale W4OP





Dale Parfitt August 8th 03 01:53 AM



Al wrote:

Impressive Dale, very impressive. I was considering a 4-foot loop to replace
my 3-foot (also hunting for NDBs) but I backed off because I thought it was
too much of a challenge. Now after seeing your 7-foot loop, I'm getting my
courage back to try again. Nice job.

Al
KA5JGV


Hi Al,
I would try the 4' loop. My 1 meter loop was very impressive- I have never heard
MW as well- and as quiet. All the local power line noise, TV switching supply
garbage etc disappeared. I did direct comparisons with my active whip- the loop
won 100% of the time. The only reason I grew it was for the 136 and 185 KHz
experimental beacons.
I have a nice machine shop and great junk box- but total cost was only a couple
of bucks for the oddball toroids I did not have in stock.
Dale W4OP


Michael Beacom August 9th 03 04:53 AM



Main loop is from 5/8" CATV hardline and CATV connectors. The vertical
support mast is thin wall fiberglass with aluminum inserts at each end
to allow clamping- the entire support weights less than 1 pound. Now, to
get it on the rotator/tower.

73,

Dale W4OP





Classy looking loop!

Cheers
Beaker


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