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

Interesting. I had often wondered about that subject but I was to lazy
to google it. So you would have to tune the loop (going outside) for
every station you wanted to hear? That doesn't sound any good to me.

Can't you tune the loop from inside? It wouldn't make any sense if you
couldn't. {?}

In article .com,
"BCBlazysusan" wrote:

Interesting. I had often wondered about that subject but I was to lazy
to google it. So you would have to tune the loop (going outside) for
every station you wanted to hear? That doesn't sound any good to me.

Can't you tune the loop from inside? It wouldn't make any sense if you
couldn't. {?}

Some loops are designed to be tuned remotely but I don't know of a
commercial one you could buy. On scheme is to send a DC voltage down
the coax to the remote antenna that varies the capacitance of a
variactor diode to tune the antenna.

--
Telamon
Ventura, California

Telamon wrote:

In article .com,
"BCBlazysusan" wrote:

Interesting. I had often wondered about that subject but I was to lazy
to google it. So you would have to tune the loop (going outside) for
every station you wanted to hear? That doesn't sound any good to me.

Can't you tune the loop from inside? It wouldn't make any sense if you
couldn't. {?}

Some loops are designed to be tuned remotely but I don't know of a
commercial one you could buy. On scheme is to send a DC voltage down
the coax to the remote antenna that varies the capacitance of a
variactor diode to tune the antenna.

I believe this is one
http://www.ccrane.com/antennas/am-an...m-antenna.aspx

craigm

In article , craigm
wrote:

Telamon wrote:

In article .com,
"BCBlazysusan" wrote:

Interesting. I had often wondered about that subject but I was to lazy
to google it. So you would have to tune the loop (going outside) for
every station you wanted to hear? That doesn't sound any good to me.

Can't you tune the loop from inside? It wouldn't make any sense if you
couldn't. {?}

Some loops are designed to be tuned remotely but I don't know of a
commercial one you could buy. On scheme is to send a DC voltage down
the coax to the remote antenna that varies the capacitance of a
variactor diode to tune the antenna.

I believe this is one
http://www.ccrane.com/antennas/am-an...m-antenna.aspx

That site seems to be down right now.

--
Telamon
Ventura, California