[G5] recording telephone calls

[Steve Adams]

The Duophone box does do some magic. It contains some components to  
reduce phone line voltage, noise and hum. A phone line is a "balanced  
line" meaning neither line is a direct ground. It also has 48 Volts  
DC on it and 300 volt AC during ringing. These voltages will surely  
destroy the iMic. Your idea might ground one side of the phone line  
and that will make noise and hum on the phone line. Also, it might  
have a low resistance and the phone company will think your phone is  
off the hook constantly.

The duophone box should contain some magic components called  
capacitors and transformer to overcome all of those problems.

Steve Adams



On Jul 10, 2006, at 12:57 PM, Mike Urseth wrote:

> It doesn't appear that iMic connects to the phone line. I'd like to  
> ditch the Radio Shack box - it seems to be introducing a fair  
> amount of noise.
>
> Can I wire a mini plug to a phone cord an plug that into the iMic  
> or does the DuoPhone box do some other magic that I'm not aware of?
>
> On Jul 10, 2006, at 11:46 AM, Steve Goldstein wrote:
>
>> Try connecting it through the Griffin iMic ($40), which digitizes it.
>>
>> http://www.griffintechnology.com/products/imic/
>>
>> iMic was the original USB audio adapter that enabled Mac and PC  
>> users to add stereo input and output to their USB computers that,  
>> otherwise, lacked the necessary hardware support.
>>
>>
>> iMic allows you to connect virtually any microphone or sound input  
>> device to your iBook, PowerBook, PowerMac or other Mac or PC  
>> systems with a USB port. iMic supports both mic and line level  
>> inputs via a selectable switch, as well as a variable level output  
>> for connecting speakers or headphones.
>>
>> Even fewer $$ via PriceGrabber:
>>
>> http://www.pricegrabber.com/p__Griffin_iMic_2,__14568142/ 
>> sort_type=price
>>
>> At 11:27 AM -0500 7/10/06, Mike Urseth wrote:
>>> The Duophone works (after a fashion) on a micro cassetter  
>>> recorder, but I need to go direct to digital.
>>>
>>> Suggestions?
>>
>
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