"David Flew" wrote in message
...
Hi
Can someone help me with a solution to my AM radio problem. I have just
replaced a cheap clock radio with an expensive and much better sounding
one.
The aim was to improve sound quality ( which it has done) and reduce the
interference from ADSL modem ( which it hasn't). This is a reasonably
expensive clock radio, with no external AM aerial connection. Being used
bedside, it needs to be oriented so that you can see the clock face. Of
course Murphy's law prevails, and the ideal orientation for seeing the
clock, dial etc is at almost exactly 90 degrees to the ideal orientation
for
best reception. In the "best reception" orientation the ADSL interference
is minimal, and quite acceptable to the radio's owner.

Re-arranging the bedroom layout to suit the radio isn't an option, and the
radio's owner really likes the AM programming. So I'm looking for another
solution.

Is it possible to have some sort of external aerial ( I'll avoid even
trying
to spell the ant..... word correctly ), feeding via co-ax to a coil or
perhaps ferrite rod, close to the clock radio? We are about 30 km from
the
main transmitter of interest, ( 774 Melbourne 50kW ) so signal strength
outside house should not be a problem.

Suggestions welcome.

David





I say it is worth the try.

The interference may not be directly from the DSL modem itself, but leaking
from the cables. If I recall correctly, the DSL signal (at least here in
the USA) is a couple of watts somewhere aorund the AM broadcast band. So
you essentially have a 2 watt transmitter pumping out wide-band trash within
a few meters of your receiver.

There used to be a 'AM signal booster' available. All it consisted of was a
coil of wire about 8 inches in diameter witha variable capacitor for
tuning. You just placed it next to your AM radio and the coil coupled into
the built-in loopstick antenna.

Jim
N8EE