Sorry JimB, I must have accidently bumped the report button.OK, I give up, whats with the "dislike" in my post #8 ?
JimB
There's an "Undo Rating" selection, should you choose to use it.Sorry JimB, I must have accidently bumped the report button.
My thoughts as well.If this effect is there, my first thought is that it is due to strong RF signals being picked up and rectified in the analogue audio stages of the phone or whatever device was used for recording.
Done, Thanks!There's an "Undo Rating" selection, should you choose to use it.
OK it appears to be generated inside. But the bugsweeper should have been able to locate the source if he had the right equipment.
How much does it vary throughout the day, week, month?
You could even use an unshielded microphone cord plugged into a laptop as an antenna. THis can pick up both magnetic (current) and Electric (voltage) fields by the audio front end demodulating the RF Carrier.
I wonder if there is any ozone smell in the house. THis would indicate the source of noise and ozone is an arc somewhere. ( RF modulated AC arc can produce these effects.)..nevermind... sounds with no AC ...
How about Telephone lines... THese can carry RF from the outside inside the home.
It still sounds like SSB audio...This tuner at 5:25 minutes is tuned. but detuned is more distorted. SIngle Side Band (SSB) saves on transmitted bandwidth but does not sound right with simple detectors.
although this is music.. 14.3MHz is a channel often used for Hurricane warning and covers all of USA.
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