[Elecraft] K3s Line Out (stereo)

[K9MA]

My station has a relay system for switching the headphones between two 
different radios, among other things. I had to add isolation 
transformers for the same reason the K3 has them on the line outputs. 
The loss in the transformers reduces the audio level too much for the 
rear panel headphone jack to drive two sets of the low sensitivity 
headphones I use. And I don't want a cable in the way to the front panel.

That's why it's "complicated".

73,
Scott K9MA

"Everything should be as simple as possible, but no simpler." -- Albert 
Einstein



On 1/15/2019 23:38, Don Wilhelm wrote:
> Last Field Day, my K3 was used at the CW station.  Two sets of 
> headphones.  One for the operator and one for the logger.
> One was plugged into the rear panel Phones jack and the other was 
> plugged into the front panel jack.  No problem, no splitter.
> Ok, if there were folks nearby who wanted to listen in, we would 
> simply turn on SPKR+PHONES in the menu, and the speaker could also be 
> heard.
>
> Very versatile.  Why make it complicated - the K3 gives us the tools 
> to do it 'the easy way'.
>
> 73,
> Don W3FPR
>
> On 1/15/2019 11:23 PM, K9MA wrote:
>> I found that the level at headphone output, at least the rear panel 
>> one, was too low to drive two pairs of headphones in parallel in my 
>> setup, which includes some isolation transformers. The speaker output 
>> works fine with the headphones. (Don't try this with super sensitive 
>> low impedance headphones.) I just wired a switch to an external speaker.
>>
>> 73,
>> Scott K9MA
>>
>> On 1/15/2019 20:51, Nr4c wrote:
>>> Why use Line Out for speakers. There is a perfectly good jack marked 
>>> Speakers right next to the Phones jack. Be sure and use a Stereo 
>>> plug but it is for ........wait for it.  Speakers!
>>
>>
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-- 
Scott  K9MA

k9ma at sdellington.us