[Elecraft] Apple MacBook Pro Audio for PSK-31 with K2?

[Alan D. Wilcox]

Thanks for all the replies!

To answer questions: The MacBook Pro is the 13" with the faster cpu and 
larger drive. New production, just got it several weeks ago. There is 
only ONE audio connection: the required 1/8" plug is same as regular 
stereo plug but has tip and TWO rings.

I cobbled up a Y-cable last evening, and I'm getting audio into the MBP. 
No way to hear the audio on the MBP tho; looks like I'll need to do a 
"line-out" jack on the K2 for constant volume to the MBP while I adjust 
the K2 volume to listening level for me.

The MBP-->K2 mic direct connection seems to work with VOX and I can 
watch ALC when tx.

Doesn't look like I've got any ground loops, even with the MBP charger 
plugged in.

The Griffin iMic looks like a good way to get separate in and out. As I 
understand it, when it's active, the internal mic and speakers are 
disabled. Yes?
OTOH, the iMic would give me isolation. I'm somewhat concerned about my 
direct connections into the MBP. I don't know what circuit I'm working 
into. (Like a black box, but it's white with an apple on it.)

At this point, I'll put an extra line-out jack on the K2. Maybe get the 
iMic ...

Thanks again,
Alan

Alan D. Wilcox, W3DVX
570-321-1516
http://WilcoxEngineering.com
https://www.smashwords.com/books/view/28062
Williamsport, PA 17701


On 12/9/10 9:27 PM, Alan D. Wilcox wrote:
> Hello,
>
> The MacBook Pro has a single 1/8" audio connection for both mic in and 
> external-speaker output. Unfortunately, that disables the internal 
> speakers, preventing their use for monitoring. Also, the single 
> "special" plug needs a homebrew Y-cable to get the input and output on 
> separate connectors.
>
> Before I over-complicate what should be a simple interface to the K2, 
> does anyone have a success story with the MacBook Pro?
>
> Cheers, Alan
>
> Alan D. Wilcox, W3DVX
> 570-321-1516
> http://WilcoxEngineering.com
> https://www.smashwords.com/books/view/28062
> Williamsport, PA 17701
>
>
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