[Elecraft] KPA500 Coax size requirements

[David Gilbert]

That's not a universally true statement.

Several years ago I was trying to decide which antenna to buy, and my 
choice came down to two antennas that were 2 db apart.  I created some 
audio files by recording typical band noise and then overlaying them 
with recorded CW messages at various strengths.  The difference between 
1 dB above the noise level and 2 dB above the noise level can make the 
difference between no copy and copy.  The files and testing methodology 
can be found here:

http://www.ab7e.com/weak_signal/mdd.html

If you're ragchewing it doesn't matter, but if you're trying to make a 
contact and your signal is at the level of the mud it does.

73,
Dave  AB7E




On 8/20/2019 9:18 PM, Jim Danehy wrote:
> ONE DB loss is the LEAST DETECTABLE amount a human can detect. Hardly if not impossible to notice.
>
> Jim
> W9VNE/VA3VNE