On Mar 20, 7:29 pm, Telamon
wrote:
In article , JeroenK
wrote:

Telamon schreef:

An active antenna in the window or outside would work pretty well.

This is the sort of thing that happens when you don't worry about loop
antennas.

This will be a fun project, that will end up with a VERY usable antenna.
I've made one myself and have had heaps of fun with it.

http://www.kr1st.com/swlloop.htm

Tuned loops can be fun but you can make a larger one at small cost that
will work well and does not need to be tuned or amplified.

--
Telamon
Ventura, California


"BUILD YOUR OWN - IN-SIDE-THE-ROOM LOOP ANTENNA

An RG8 Coax Cable Loop Antenna used with an Active
Pre-Selector could be a low cost 'better radio reception'
answer then and Around-the-Room Loop Antenna.

A simple "One-Turn" Coax Cable {Shielded} Loop Antenna
Thirteen Foot (13') RG8 Coax Cable Loop Antenna Element with
a Four Foot (4') Diameter and a Three Foot (3') Feed-in-Line
with PL-259 Plug; for a Total Length of 16 Feet .
LOOP INFO = http://tinyurl.com/8k7o6
Has a Signal Capture Area (Aperture) of about 1808 Sq In
and can be used with many of the MFJ Active Pre-Selectors
MFJ-959; MFJ-1020; MFJ-1040; MFJ-1045; etc to provide an In-Door
Low Noise Loop Antenna to Null-Out many 'local' Noise Source.

Read - Building the GreerTech Coax Cable [Shielded] Loop Antennas
GREERTECH = http://tinyurl.com/9der2

Basic Coax Cable Loop Antenna Diagram
http://www.iri.tudelft.nl/~geurink/i..._schematic.jpg

READ - Coax Cable [Shielded] Loop Antennas {GreerTech}
http://groups.yahoo.com/group/Shortw...a/message/1625

1 - Hook a Coax Cable {Shielded} Loop Antenna to the back
of a MFJ-1020 In-Door Active Antenna and Pre-Selector.
http://www.universal-radio.com/catal...t/1413rear.jpg
2 - Remove the small Whip Antenna from the MFJ-1020
http://www.universal-radio.com/catalog/sw_ant/1413.html
3- You now have an Active {Tuned} Loop Antenna.
4 - Connect the Output of the MFJ-1020 to the Radio
via a short Coax Cable.

A 'small' Two Foot Diameter {Six Foot Circle} Loop Element
on the Window can work well with the MFJ-1020 when NO
out-side Antenna is permitted -and- a larger Loop in the
Room is not allowed.

A 'larger' Five Foot Diameter {Sixteen Foot Circle} Loop
Element on the Wall will work well by itself when NO
out-side Antenna is permitted -and- a larger Loop in the
Room is doable. Hide the Loop behind the Draps of Curtains.


iane ~ RHF