[Amps] Watts to DBM??

[Andy GD0TEP]

Hi Han,

That is what I was looking for...  :-)

Many thanks!

73 Andy
http://www.gd0tep.com

73 Andy
http://www.gd0tep.com


-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Han Higasa
Sent: 25 September 2009 10:39
To: amps at contesting.com
Subject: Re: [Amps] Watts to DBM??

hi Andy

1W = 0 dBW = 1000mW = 30 dBm

A [dBm] = 10 x log (P) 

where P is power in milliwatts.

P [mW] = 10^(A/10)  = (A/10)th power of ten

whare A is power in dBm.

3 dBm = 10^0.3 = approx 2 mW
10 dBm = 10^1 = 10 mW

de Han JE1BMJ
 
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