Topband: FW: The WD8DSB mini-flag antenna (LONG!)

[John Kaufmann]

The P3 averages power, not amplitude, so using longer averaging times just
smooths the display and doesn't reduce random noise.

John W1FV

-----Original Message-----
From: Topband
[mailto:topband-bounces+john.kaufmann=verizon.net at contesting.com] On Behalf
Of Jim Brown
Sent: Thursday, February 25, 2021 8:03 PM
To: topband at contesting.com
Subject: Re: Topband: FW: The WD8DSB mini-flag antenna (LONG!)

On 2/25/2021 2:29 PM, John Kaufmann via Topband wrote:
> The P3 noise measurement bandwidth was about 100 Hz in my measurements.
I hope that everyone realizes that setting a high value for averaging 
cancels non-correlated noise in spectrum displays, including the 
waterfall, greatly increasing the visibility of correlated signals and 
noise. Correlated can be understood as non-random, and includes nearly 
all ham transmission modes and most electronically generated noise like 
computer clocks, trash from electronic power handling and switch-mode 
power supplies.

73, Jim K9YC
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