Hi group.

I wanna know how can I get the FM signal without that nasty 'pink' noise.

I'm not using any kind of external antenna.

Greetings!!

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

What is it??

Boborato wrote:
Hi group.

I wanna know how can I get the FM signal without that nasty 'pink' noise.

I'm not using any kind of external antenna.

Greetings!!

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

What is it??

Boborato wrote:
Hi group.

I wanna know how can I get the FM signal without that nasty 'pink'
noise.

I'm not using any kind of external antenna.

Greetings!!




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

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.

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.

http://en.wikipedia.org/wiki/Pink_noise

Then compare to http://en.wikipedia.org/wiki/White_noise


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

What is it??

Boborato wrote:
Hi group.

I wanna know how can I get the FM signal without that nasty 'pink' noise.

I'm not using any kind of external antenna.

Greetings!!

Neat. I especially like the Black Noise...
On Sat, 10 Jun 2006 08:08:24 -0500, "TSnCS" wrote:

http://en.wikipedia.org/wiki/Pink_noise

Then compare to http://en.wikipedia.org/wiki/White_noise

John Ferrell W8CCW

"John Ferrell" wrote in message
...
Neat. I especially like the Black Noise...

Isn't the mute switch nothing more than a black noise generator?

73, Steve, K9DCI

Dave,

If you've never heard of 'pink' noise, then you're probably not a student of
noise.

In noise parlance, 'white' noise is the term that is usually used for
non-bandlimited noise (ie, 'broadband noise'). "Pink' noise, on the other
hand, is a term used to refer to bandlimited noise. In practice, anything
that comes out of the audio channel of a communications receiver is really
'pink' noise, as the bandwidth is limited to a few KHz. On the other hand,
the noise that is incident at the antenna or generated in the front-end is
much broader in bandwidth and is more deserving of the term 'white' noise.

Joe
W3JDR


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

What is it??

Boborato wrote:
Hi group.

I wanna know how can I get the FM signal without that nasty 'pink' noise.

I'm not using any kind of external antenna.

Greetings!!

TU

W3JDR wrote:

Dave,

If you've never heard of 'pink' noise, then you're probably not a student of
noise.

In noise parlance, 'white' noise is the term that is usually used for
non-bandlimited noise (ie, 'broadband noise'). "Pink' noise, on the other
hand, is a term used to refer to bandlimited noise. In practice, anything
that comes out of the audio channel of a communications receiver is really
'pink' noise, as the bandwidth is limited to a few KHz. On the other hand,
the noise that is incident at the antenna or generated in the front-end is
much broader in bandwidth and is more deserving of the term 'white' noise.

Joe
W3JDR


"Dave" wrote in message
. ..

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

What is it??

Boborato wrote:

Hi group.

I wanna know how can I get the FM signal without that nasty 'pink' noise.

I'm not using any kind of external antenna.

Greetings!!