Thursday, October 10, 2002

Presentation: Amateur Radio Sound Card Modes



Here is a presentation that I did on Amateur Radio Sound Card Digital Communications Modes at London Amateur Radio Club October 10, 2002.

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/ 



Eric Pierce VA3EP - See the Disclaimer in the Introduction

© Eric Pierce and "VA3EP Amateur Radio And Other Geek Pursuits", 1952-2099. Unauthorized use and/or duplication of this material without express and written permission from this blog’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Eric Pierce and "VA3EP Amateur Radio And Other Geek Pursuits", with appropriate and specific direction to the original content.


No comments:

Post a Comment