[Elecraft] Mac Mini, cocoamodem, and k3

[Kok Chen]

On Feb 20, 2011, at 3:50 PM, David Guernsey wrote:

> Has anyone used cocoamodem with the k3 and a mac mini computer?  ...  In the manual I find a microphone in plug which would be the line in, but find no line out to take the computer audio back to the k3.

Which vintage of the Mac mini?  

The current version has both a Line Input jack and Headphones/Line Output jack.  Both mini-phone jacks can do either analog or S/PDIF, but K3 will only take analog, of course; just use a cable with 3.5 mm plugs for all connections.  Even though the K3 line input is labelled Mono, it is a stereo jack; in cocoaModem, select the left stereo channel for output device.

Use "Audio MIDI Setup" in /Applications/Utilities to find details of all audio ports that are connected to your Mac.

Having said that, you are much better off getting a cheap USB sound card such as the Griffin Technology iMic for exclusive use by the modem.  That way, you won't have to worry about music, chimes, and application sounds from going out over the air when you use VOX to engage transmit.

http://store.apple.com/us/product/TX532ZM/A?mco=MTY3ODQ5OTY

73
Chen, W7AY