[Ham-Mac] MixW on a mac?

[Dick Kriss]

Steve,

Thank for sharing your experience.   Do you recall the output impedance spec
for the Kenwood TS-2000 pin 13 on the ACC2 plug.   My Kenwood TS-570S is 4.7
K ohms and I have assumed this was why I could not get the iMic to work.

Dick AA5VU

On 5/13/06 12:03 AM, "Steve Hellyer" <shellyer at sympatico.ca> wrote:

> Hi Rich,
> 
> I use a SignalLink-to-iMic-to-iMac & also had it working to PowerBook
> and the new MacBook Pro.
> 
> The key for me was get level set correctly because if you overdrive
> the iMic it will not perform the analog to digital conversion. Sort
> of shuts down. (Hard to describe.) It like when you draw too much
> from a power supply it "Crossbars" and shuts down.  Pushing too much
> audio will cause the A to D encoder to shutdown. (If you get it that
> state you have to give it a change to recover 5 to 10 seconds you may
> even have disconnect iMIC from the USB to reset it.
> 
> Connect the iMic to another audio source (Pocket Radio, iPOD, tape
> player etc...) and crank up audio to 60-75%.  Adjust the iMic switch
> to the line voltage level (NOT MICROPHONE position its too
> sensitive).  When you have you input levels working for that device
> then hook up to radio.
> 
> Now you can open up the SignalLink and make the proper audio levels.
> I my case I think I turn it down quite a bit (not 100% sure as it was
> sometime ago).
> 
> The external audio line out in my case is connected to a 13 pin
> accessory port on my TS-2000.  But I have played with it connected to
> headphone jack even.
> 
> Should be no reason this doesn't work. The iMic captures audio from
> any analog source and uses standard USB audio I/O into any USB Mac
> Running Mac OS X.
> 
> I have it working with CocoaModem, Multimode, AudioCoder, Even
> GarageBand and Quicktime Pro can record stuff.  I can record some one
> and playback the audio to show what they sound like to me. (Latter is
> a bit trick as the Singalink work s like a VOX to engage the PPT. BUt
> setting the level on Signalink in combo with output of computer will
> get this working.
> 
> BTW All Macs with builtin onboard mic in ports are line level which
> means you need a preamp if your using a Microphone.  But perfect
> level for input from a radio, tape player, CD player etc...
> 
> I am sure others have this working. Also worth noting there are other
> companies who sell audio to USB devices. Griffins iMic isn't the only
> choice but perhaps one of the least expensive.
> 
> http://www.m-audio.com/products/en_us/FastTrackUSB-main.html
> Is more expensive but with 24-bit/48kHz sound conversion it is even
> more accurate and makes decoding PSK31, RTTY, HELL etc.. with various
> programs.  I Still think for most part iMic is a good choice.
> 
> Maybe others can suggest other USB or firewire audio adaptors as well???
> 
> Hope this helps and I really hope you can get it working as I would
> like to work you one day on digital :-)
> 
> Cheers,
> 
> Steve VA3SPH
> 
> On 12-May-06, at 11:19 PM, Richard Cincotta wrote:
> 
>> Chris,
>> 
>>    How'd you do it?  I'm running an ICOM 703+ and have tried to
>> make Cocomodem work through the SignalLink-to-iMic-to-USB/iBook
>> connection.  Do you have any guesses what I might be doing
>> wrong?  ...Anything you didn't get right the first time?
>> 
>> Rich, KI4FW
>> 
>> 
>>> 
>>> I've used MultiMode with an iMic on an iBook without any problem.
>>> 
>>> --
>>> 
>>> ---
>>> Chris Smolinski
>>> Black Cat Systems
>>> http://www.blackcatsystems.com
>>> _______________________________________________
>>> Ham-Mac mailing list
>>> Ham-Mac at mailman.qth.net
>>> http://mailman.qth.net/mailman/listinfo/ham-mac
>> 
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