[amsat-bb] XW-2D Returns to Life!

Zach Metzinger zmetzing at pobox.com
Thu Mar 5 16:18:41 UTC 2020


On 2020-03-05 04:06, Hasan al-Basri via AMSAT-BB wrote:
> Keep in mind, these are all RELATIVE measurements not ABSOLUTE.

Indeed. I suggest not using the unit dBm, as that is decibels relative 
to 1 milliwatt. This is an absolute unit.

It is common to refer to some other standard when comparing relative 
power, such as dbFS (decibels relative to full scale, usually a negative 
number) for an ADC.

Perhaps dBANF might work, which would be dB relative to Agreed Noise 
Floor. I don't think I'd use "dBNF", as that might be confused with 
Noise Figure in dB.

--- Zach
N0ZGO


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