Thread: Grounding
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Old December 9th 05, 06:02 PM posted to rec.radio.shortwave
RHF
 
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Default Quest: Connect End Of Loop To Beginning ?: In-Door Horizontal [Flat] Loop Antenna - - - No Grounding Required

Robert 11,

THE LOOP ANTENNA ELEMENT :
The Loop being a Square/Rectangular Shaped Loop completes the
Circling of the Room around the Four Walls. Both Ends of the Loop
come together at some point on the Wall or at a Corner of the Walls
near the Ceiling and are connected to a Pair {Two} Parallel Wire
Feed-in-Line that goes down to the Radio's Antenna Input.

THE FEED-IN-LINE :
The short vertical Feed-in-Line for this type of In-Door {In-the-Room}
Loop Antenna is usually a Pair {Two} Parallel Wires.
* 300 Ohm TV type Twin Lead works well as a Feed-in-Line
for this type of Loop Antenna.
* Speaker Wire also can be used; either flat or twisted will work.
* The basic wire used to make the Wire Loop Antenna Element
can be continued as a single piece from the Radio up the Wall;
around the Four Walls; and down back to the Radio. If this is
done then it is recommended that the short vertical parallel run
has the two Wires Twisted together.
* A piece of Audio Coax Cable can also be used; especially if
the Radio uses an 1/8" Mono Jack for the External Antenna Input.


WANT A BIGGER LOOP ANTENNA - PUT IT IN THE ATTIC :
[ When an Out-Side / Out-Doors Antenna is NOT Permitted. ]

KISAP: I recommend using TV type Antenna Parts for most
"In-the-Attic" Antenna installations.

* 75 Ohm Coax Cable for the Feed-in-Line for Household
'man-made' Noise RFI/EMF Reduction.

* TV 75 Ohm to 300 Ohm Matching Transformer (Balun) for
Noise RFI/EMF Reduction and AM/MW Band Signal Reduction.

* TV 300 Ohm Twin Lead for the Wire Antenna Element
50-100 Feet -or- 90 Feet of Insulated Hook-Up Wire.

* "F" Jack to 1/8" Plug (1/8" Mono-Jack Adapter)
RadioShack Catalog # 278-257

READ - For Shortwave Listening (SWL) here is a "Simpler" Horizontal
Loop Antenna in the Attic using common TV type Parts.
http://groups.yahoo.com/group/Shortw...a/message/6656
http://groups.google.com/group/rec.r...59a36c32f5ecd7


READ - Shortwave Listeners (SWL) Horizontal Loop Antenna
built with common and cheap TV Parts
http://groups.yahoo.com/group/Shortw...a/message/6135
http://groups.google.com/group/rec.r...8323867b8b44a3



ADDITIONAL READING LIST - Here are several Messages
to Read about In-the-Attic Antennas:

* Things-to-Think-about: Using Attic Antenna with the your
'portable' AM/FM/Shortwave Radio.
http://groups.yahoo.com/group/Shortw...a/message/1658

* A Compilation of "In-the-ATTIC" Antennas
http://groups.yahoo.com/group/Shortw...na/message/426

* Low Cost SWL Antenna (Made From TV Parts)
http://groups.yahoo.com/group/Shortw...nna/message/17

* ATTIC - Receiving Antenna Question - Think Loop made from TV Parts
http://groups.yahoo.com/group/Shortw...a/message/1635

* Ground Required At Balun ? {Getting "Grounded" in your Attic}
http://groups.yahoo.com/group/Shortw...na/message/287

* Snake-in-the-Attic SWL Antenna {Simplest Low Noise Attic Antenna}
http://groups.yahoo.com/group/Shortw...na/message/313
http://groups.yahoo.com/group/Shortw...na/message/317

* AM/MW Band Signal Reduction using TV Type Coax Cable Parts
for better Shortwave Listener Antenna
http://groups.yahoo.com/group/Shortw...na/message/930

* Simple SW Antenna = Improved Random Wire Antenna
using TV Antenna Parts
http://groups.yahoo.com/group/Shortw...na/message/740
..
..
hope this helps - iane ~ RHF