[Elecraft] K3 CONFIG LIN OUT

[Ken K3IU]

Hi Brian:

Not so on my K3. No specific voltage levels available, but with the 
sound card Line In gain set to 50%, I had to turn down the LINE OUT 
level to 28 - 30 to keep from overdriving the sound card. There was 
plenty of volume from the l'il Dell speakers to fill the room with the 
"Master Volume" sound card control set to 50%.

73,
Ken K3IU
K3 #202
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

K3KO wrote:
> Had two reports of  LINE OUT "level" on this posting.
>
> With LIN OUT at 100:
>
> 1) 500 -700 rms mv when tuning across band
> 2) When attached to sound card, max sound card gain had to be used to get
> decent signal.
>
> Perhaps LINE OUT levels are indeed too low.
>
> 73 de Brian/K3KO
>
>
> Lyle KK7P wrote:
>   
>>> Anybody know just what the voltage range can be put out at the line out
>>> jack?  
>>>
>>> Since it is pre-AGC it isn't a "constant level" output but instead varies
>>> with signal strength.  CONFIG LIN OUT apparently adjusts the level.
>>>       
>> It is in fact post-AGC.  CONFIG LIN OUT adjusts the gain of the post-AGC 
>> amplifier that drives LINE OUT.
>>
>> Most claims of "constant level" output are actually "fixed gain after 
>> AGC", same as the K3.
>>
>> Your specific case of 1.7 V RMS is 4.8V p-p.  The driver for the LINE 
>> OUT output operates from a 3.3V supply, so it probably will not 
>> overdrive your external device in any case.
>>
>> 73,
>>
>> Lyle KK7P
>>
>> (You can measure the output with a multimeter in your particular setup 
>> for your particular AGC and other settings.)
>>
>> _______________________________________________
>> Elecraft mailing list
>> Post to: Elecraft at mailman.qth.net
>> You must be a subscriber to post to the list.
>> Subscriber Info (Addr. Change, sub, unsub etc.):
>>  http://mailman.qth.net/mailman/listinfo/elecraft    
>>
>> Help: http://mailman.qth.net/subscribers.htm
>> Elecraft web page: http://www.elecraft.com
>>
>>
>>     
>
>