uninvited spurious travelers ...

  • 1
  • Question
  • Updated 3 years ago
It's a little embarrassing ... an electronics engineer not solving this sooner. For the past year I have noticed a spurious signal of unknown origin, traveling about the bands. It just floats around and invariably parks itself near where I am listening. In the spectrum photo the 'signal' at 14.138 Mhz isn't a signal at all. It's the mystery traveler.

Well, it turns out he/she comes from my Bose Companion II speakers. I haven't taken the time to identify if it is from the AC adapter or the speaker itself, though it appears to be from the internal speaker amplifier.

Just in case others have noticed this ...

W7NGA  dan
San Juan Island, Wa.
Photo of W7NGA


  • 421 Posts
  • 176 Reply Likes

Posted 3 years ago

  • 1
Photo of EA4GLI - 8P9EH - Salvador

EA4GLI - 8P9EH - Salvador

  • 1768 Posts
  • 541 Reply Likes
Really? How did you discovered it completely removed power to the Bose? Turn them off but the wall wart on still does the same? Good find.
Photo of Ken - NM9P

Ken - NM9P, Elmer

  • 4033 Posts
  • 1251 Reply Likes
Oh, no.  I have had Bose Companion II Series III speakers for over a year and have often seen a similar signal.  I never thought of the speakers as the source!  They have always seemed to be RF proof in every other sense.

I need to test them tonight.......

Thanks for the catch!

Ken - NM9P