JP,

Fixed Loop On-a-Roof - Great for Monitoring that Hard-to-Get
AM/MW Radio Station [ On-the-Roof / In-the-Attic / Out-in-the-Yard ]
http://groups.yahoo.com/group/Shortw...a/message/9430

For that type of single AM/MW Radio Station "On-Frequency"
Monitoring an Out-Side Fixed 'Tune' Loop Antenna can
be very effective for providing a Clear and Clean Signal
for Operational Monitoring of the Transmitter's 'actual'
{Over-the-Air} Broadcast Signal.

Usually getting the Element of the Loop Antenna at least
Three Feet above the Roof (Five Feet is better) will get
the Loop out of the Building's RFI / EMF Noise Envelop.

1. Build the Loop Antenna Element (Hula-Hoop) with a
Weather Proof Box for the Fixed Tuning Capacitor and
Coax Cable feed-in-line to the Radio / Receiver.

2. Located, Position and Tune the Loop Antenna Element
for the best Signal of the "Target" AM/MW Radio Station.

3. Listen and Enjoy 'that' AM/MW Radio Station 24/7 )

READ - One Station "Fixed" Out-Side AM/MW Loop Antenna
http://groups.yahoo.com/group/Shortw...a/message/5065

READ - Two AM/MW Antennas for AM/MW DXing
http://groups.yahoo.com/group/Shortw...a/message/3446


just an idea - iane ~ RHF