Radio geeks, what could cause this: occasionally in the afternoons, I get a few seconds of audible human speech (not enough to identify) on my amp/speakers with the 3.5mm connector lying loose on floor.
-
-
CB fits everything else: modulation is either DSB-LC (AM) or SSB-LC so it can be detected with an envelope detector (i.e. a simple diode), it's ~27MHz so your wavelength is ~11m & a quarter-wave resonant antenna would be ~2.75m or so, i.e. a common length for speaker input wire.
-
Where is the diode acting as the envelope detector? In the amp?
-
Any PN junction in the wrong spot in the initial amplifier stage, yes!
End of conversation
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.