[Elecraft] N-Gen Output

[Robert Friess]

The N-gen produces noise power that is approximately 35 dB greater than that 
produced by a 50 ohm resistor.  At room temperature a 50 ohm resistor 
produces a noise power of -174dBm per Hertz of bandwidth.  So in a typical 
CW bandwidth of 500 Hz, the N-gen noise power output is 
approximately -174+10log(500)+35= -112 dBm or 0.56 microvolt.

Bob, N6CM

----- Original Message ----- 
From: "kbgluxford" <kbgluxford at fastmail.fm>
To: "Elecraft Reflector" <elecraft at mailman.qth.net>
Sent: Monday, July 17, 2006 3:28 AM
Subject: [Elecraft] N-Gen Output


> Hi guys,
>
> I have built the Elecraft Noise Generator.  The specs say that the noise 
> output is 35 dB.
>
> Am I correct in assuming that 0 dB corresponds to 1 microvolt, so that an 
> output of 35 dB corresponds roughly to 56 microvolts?
>
> If this is so, it would explain why I can not see the output on my 
> oscilloscope.
>
> Many thanks in advance, and 73
>
> Kevin
> VK3DAP / ZL2DAP
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