Topband: Speaking of noises...

[Mike Waters]

Sounds like our former secretary's cell phone. When she placed it next to
her computer speakers, we could hear it faintly. Took us a long time to
figure that one out!

73, Mike
www.w0btu.com

On Feb 21, 2018 11:48 AM, "Bill Tippett" <btippett at alum.mit.edu> wrote:

Does anyone know the source of periodic wideband buzzes that sound like
this:

buzzz..buzzz..buzzz..buzzz (i.e. 4X then pause)  buz..buz..buz (3X ~10 dB
down).

I believe this may be some sort of ionospheric sounder but I've heard this
for decades, including when I was in Colorado.  Hopefully someone knows
what's generating this.