Ron Hardin wrote:

WOWO 1190 Fort Wayne IN seems to have a low-frequency rumble in the
stereo difference channel, up to about 240 Hz.

It's audible if you listen to either sideband alone (with or without
sync detection) but inaudible if you listen to both sidebands, say
as normal AM or DSB sync detection.

I noticed it a couple weeks ago and it's still there.

They're 160 miles away, so maybe somebody closer can hear it better.

Here's audio http://rhhardin.home.mindspring.com/wowo2.ram

the sound of a diesel engine idling.

Received sync detected LSB. It's _completely_ gone on AM or sync detected DSB.
Sounds the same on USB as LSB.

So, in other words, it's in the difference channel only.
--
Ron Hardin


On the internet, nobody knows you're a jerk.