"?ish" wrote in message
oups.com...
Hello all,

Why does SW radio comes up with noise the moment I dial beyond AM. I
have tried tuning with several radios (including Sony 2010) and for
some reason noise level seems to increase around that band. I tried
with both AC adapter and plain old battery.

Any ideas?

TIA


Most portables switch from a ferrite antenna for MW-LW reception to a whip
antenna for SW. The whip antenna is more sensitive to electrical noise.

It's also possible you have a local noisemaker which starts up around 2 Mhz.
In my case, I have several radios which work with wire antennas only and I
don't have any such sharp peaks in the noise.

Frank Dresser