[Elecraft] K3 Atennuator

[John Lemay]

I think Rons suggestion will only work if ...

 

i), you turn off the AGC and 

 

ii), the linear range of the audio stages is not exceeded.

 

Otherwise, the AGC will work to keep the audio level relatively constant -
that's what it's there for !

 

John G4ZTR

 

 

  _____  

From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Ron D'Eau Claire
Sent: 01 February 2013 23:04
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 Atennuator

 

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





--
View this message in context:
http://elecraft.365791.n2.nabble.com/K3-Atennuator-tp7569488p7569492.html
Sent from the Elecraft mailing list archive at Nabble.com.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

__________ Information from ESET NOD32 Antivirus, version of virus signature
database 7960 (20130201) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com





__________ Information from ESET NOD32 Antivirus, version of virus signature
database 7960 (20130201) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com


__________ Information from ESET NOD32 Antivirus, version of virus signature
database 7961 (20130202) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com



__________ Information from ESET NOD32 Antivirus, version of virus signature
database 7961 (20130202) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com