[Elecraft] K3 Atennuator

Ron D'Eau Claire ron at cobi.biz
Fri Feb 1 18:04:15 EST 2013


It's easy to confirm both the preamp and atten effect on the signal using
the excellent built-in tools in the K3. Switch the display to show the audio
voltage, tune in a signal, and switch between 'in' and 'out' with your
preamp or attn noting the voltage level change. 

To convert to dB, it's a simple log function found on most inexpensive
calculators:

dB= 20log(V1/V2) where V1 and V2 are the two voltage levels noted.

Of course you can do exactly the same thing to compare the gain (or loss)
when comparing antennas, etc., in the signal path.  

73 Ron AC7AC

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Mike K2MK
Sent: Friday, February 01, 2013 2:41 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 Atennuator

Hi Mike,

I did a quick search on the word attenuation and found this older e-mail
from Lyle of the Elecraft crew.

73,
Mike K2MK

*Lyle Johnson Tue, 25 Nov 2008 12:42:26 -0800

How much attenuation does the Attenuator put in line?

Approximately 10 dB, not adjustable.

73,
Lyle KK7P*



Mike Sanders wrote
> What is the level of attenuation when selected. Can it be controlled?
> Thanks, Mike
> 
>              K0AZ
>        Mike Sanders





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