I did something similar as a project:
http://homepage.mac.com/jfmenard/PhotoAlbum21.html
Just exclude the PTT control part, the rest is for connecting a line
out to the line-in of your computer or stereo system. I use a 600 ohm
to 600 ohm transfo to isolate the circuit, etc..
Le 04-07-16, à 17:50, Don Brown a écrit :
Hi
Although you can use a standard stereo mini plug to mini plug to
connect the headphone jack to the sound card, it is not the best
choice. The headphone jack has some filtering that will roll off the
high end. I built up a little box with a 4 ohm load resistor and a RCA
jack so I can connect a cable to the external speaker jack with a RCA
plug to mono mini plug. I also built a cable with the little two pin
speaker connector like in the K2 on one end and a RCA plug on the
other. The 4 ohm resistor is connected to a stereo jack on the other
side of the box with two 1K resistors in series with each channel. The
stereo jack then connects to the sound card with a standard stereo
mini to mini plug. This works with line level inputs on the sound
card. If your computer only has mic level inputs then you will need to
build two voltage dividers between the 4 ohm resistor and the stereo
jack, one for each channel. Something like a 10K and a 1K should work.
Don Brown
KD5NDB
----- Original Message -----
From: [EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>
To: [email protected]<mailto:[email protected]>
Sent: Friday, July 16, 2004 4:22 PM
Subject: [Elecraft] Line In cabling
Hi everyone,
I am going to use the Spectrogram software to align my K2.
When I build
the cable to go from the earphone jack to the Line In on my sound
card, do I
wire it for mono or stereo? Mono or stereo plugs? Speaker wire or
thin coax?
Thanks
Terry Southern de KC0QZX
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Jean-François Ménard / VA2VYZ
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Club d'Astronomie Amateur de Sherbrooke
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