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Sound Card Mode Presentation

Eric Pierce VA3EP
London Amateur Radio Club
October 10, 2002

 

Presentation ( large PDF presentation, may be advisable to right click and save locally to your PC before viewing)

Links

Building an interface

http://www.qsl.net/wm2u/interface.html  (this link is slow, but has a good collection of schematics and links )
http://www.waypoint.com/users/~discobay/Sound_Card_Presentation.htm   (another presentation with schematics)
http://www.arrl.org/news/features/1999/0701/2/?nc=1   (overview article with scheamtics)

As mentioned in the presentation, I prefer an interface with FULL isolation via audio transformers in RX and TX and an opto isolator in the PTT circuit, as it eliminated all chance of audio or rf ground loops.

 

Buying an interface

Rigblaster: http://www.westmountainradio.com 
Signalink: http://www.tigertronics.com
Donner: http://home.att.net/~n8st/index.html 
Rascal: http://www.packetradio.com
MFJ: http://www.mfjenterprises.com/products.php?prodid=MFJ-1273B

Note that there are others appearing all the time.

Sound Card Mode Overview

http://www.arrl.org/tis/info/digital.html  (good collection of articles)
 

SW Collection Downloads

http://www.muenster.de/~welp/sb.htm   (this is a GREAT master list of all kinds of sound card sw with download links)
 

Sound samples

Good for figuring out just WHAT you have tuned to!

http://www.palet.nl/amateur/
http://www.kb9ukd.com/digital/ 

 

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