Stupid question regarding voltage levels

[jaroslav Lukesh]

> I feel the fool, but I don't have any references handy...
> 
> What is the reference level for 0 dbM? And are these ratios based on
> voltage, or power?

0 dBm=
	Voltage: 0,775V
	or power 1mW onto 600 Ohm

Another: decibels-microvolts:

	0dBuV=1uV (1 microvolt)
	20dBuV=10uV (10 microvolt)
	60dBuV=1mV (1milivolt)
	
	but these are used mainly in radioelectronics.


Jaroslav Lukesh