Dave wrote:
Ken Bessler wrote:

"Dave" wrote in message
. ..

Pray tell, in 50+ years of ham radio I have never heard 'pink noise'.

What is it??

SNIPPED


I just used NCH tone generator to make pink noise - sounds
like what you hear on a AM when you open the squelch. I can
email you a sample if you'd like. :-)

Ken



For years we called that 'white' noise or 'background' noise.

Now, with a full quieting signal, 20 uv, if it's being heard on FM I'd
suspect the discriminator or limiter circuits. I'd start looking at the
limiter.



No No No White noise is used where you want an equal distribution of
amplitude across the spectrum you are measuring.

Pink noise is used where you need a response that is similar to the
graph of human hearing for example. It is nonlinear across the bandwidth.