Do you use an outboard phantom powering unit? You might suspect that.
I have a cheap and nasty Thomann phantom power unit which puts out
hash on a band centered on 18kHz.
Problem was solved by inserting the power from six 8.4V NiMH batteries
and a couple of diodes into the unit. I can now either run off 12V and
taked the 18K noise hit, or use the 6 NiMH batteries and not take the
18k noise, which is presumably the frequency the 12V inverter runs at.
But 16K, or excatly 15,625 in my case in Europe, would make me suspect
TV SET. Not necessarily computer monitor - these have higher refresh
and field rates nowadays
--- In Steve Pelikan <>
wrote:
>
> I've got a number of recent recordings with a significant signal at
> 16KHz (or 15,792 Hz perhaps)?
>
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