[Elecraft] K3: Driving Data Modes Using Dell Dimension 8400

[Don Wilhelm]

Joe,

I am assuming you are referring to the W3FPR Don's Fixed Audio Output 
fpr the K2. 

Yes, that is a good solution, but unfortunately, there are no more 
boards available for purchase.  Tom Hammond has the board layout and 
other info on his website www.n0ss.net for the boards that fit between 
the K2 front panel and the Control Board, and my website www.w3fpr.com 
has information about the original design.  Tom has the board layout, 
and is willing to provide it to anyone interested.  Actually, the 
circuit is not complex and can be quickly implemented on perfboard for a 
one-off implementation.

If you experience hum or other audio problems with a direct connection 
to the computer, you may follow the advice of Jim Brown K9YC for curing 
that condition, or just add transformers in the path (transformers from 
defunct computer modem cards work well).

The K3 has line-in and line-out connectors built in, along eith 
isolation transformers - the K2 does not, it was designed before the 
popularity of digital modes (other than RTTY)

73,
Don W3FPR


Joe Subich, W4TV wrote:
> On 4/27/2010 4:52 PM, Dickinson, Joe wrote:
>  > I was thinking of getting the signalLink for the K2
>
> Why bother?  Add Don's fixed level output and use one of the
> $20 - $25 USB soundcards.  A lot less expensive and every bit
> as effective/functional as the Signalink.   If you need the
> automatic soundcard VOX make up the KH6TY interface from QST
> without the transformers (circuit boards from Far Circuits)
> - still a lot less expensive than Signalink.
>
> 73,
>
>     ... Joe, W4TV
>
> On 4/27/2010 4:52 PM, Dickinson, Joe wrote:
>   
>> I was thinking of getting the signalLink for the K2
>>
>>
>>
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of George A. Thornton
>> Sent: Tuesday, April 27, 2010 2:33 PM
>> To: ALAN GARD; Elecraft Mailman
>> Subject: Re: [Elecraft] K3: Driving Data Modes Using Dell Dimension 8400
>>
>> I recently went through all this.
>>
>> A Signalink is not  necessary since the K3 already does internally what the Singalink does other than the sound card.  They run about $100.
>>
>> I was warned away from the cheapest USB sound card dongles and I ended up spending about $30 for something with a volume control.  It works fine.
>>
>> Need to play with audio levels.
>>
>> I used Ham Radio Deluxe and DM780.
>>
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of ALAN GARD
>> Sent: Tuesday, April 27, 2010 10:04 AM
>> To: Elecraft Mailman
>> Subject: [Elecraft] K3: Driving Data Modes Using Dell Dimension 8400
>>
>> Hi to the Group.
>>
>> Sorry if this is a bit OT, but here goes.
>>
>> I'm just getting back into data modes (first time on K3), particularly WSPR.  It's great that the K3 provides Lines In&  Out obviating the need for terminal units and such.
>>
>> Snag is, the Dell's integral SoundMax, although it has Line In that receives well from the K3 Line Out, doesn't seem to have any provision of Line Out that I can see.  Just teeing off the line to the usual amplified speakers seems a bit crude and adding an outboard sound card is expensive and rather negates the K3's advantage.
>>
>> I'd be interested if anyone has found a more elegant way of using this particular computer.
>>
>> 73 de Alan G4LWA
>>
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