[R-390] Antenna Noise

[Roy Morgan]

At 11:32 AM 8/20/2004 -0400, Meir WF2U wrote:
>...  the ambient atmospheric noise in the HF band (up to 30 MHz) averages 
>8 dB.

Can someone give a relatively simple explanation of what this means?

I seem to remember that the "8dB" indicates that a certain (standard?) 
antenna will deliver 8 dB more noise to the receiver than a resistor (at 
room temperature?) equal to the antenna's impedance.  Do I have that right?

Maybe we could watch the RF Level meter and see such a change.

Related musing: I wonder if anyone has measured the response of the RF 
Level meter and receiver system to see if the indications are anywhere near 
right.

Roy

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
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