[This was meant for the reflector. Meanwhile the reference is < http://audiosystemsgroup.com/RFI-Ham.pdf >
which I found to be EXCELLENT. There are more very good papers from the same source at < http://audiosystemsgroup.com/publish.htm > Chris - AE6VK] -----Original Message----- From: Christopher T. Day Sent: Tuesday, February 20, 2007 1:29 PM To: 'Joe - AB1DO' Subject: RE: [Flexradio] single line-in/line-out cable I use a length of CAT-5a twisted pair cable for this, two pairs for transmit and two for receive, sharing the "white" conductor as ground in each pair of pairs. I don't have time at the moment to dig up the reference, but one of the audio engineer web pages touted CAT-5a cable as better than shielded since the twisting was held to such a tight standard. Seems to work very well for me. Chris - AE6VK -----Original Message----- From: Joe - AB1DO [mailto:[EMAIL PROTECTED] Sent: Tuesday, February 20, 2007 1:13 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] single line-in/line-out cable Hi gang, mulling over some ways to reduce the number of SDR-1000 interconnect cables here and I was wondering if a single 4 lead shielded cable could be used to replace the two I/Q cables between the SDR-1000 and the sound card. The four leads would be connected in pairs to a pair of 1/8" audio connectors either side, with the shield connected to only one connector pair (say "To Line In"). That way there would only be one ground connection and one cable. I don't think there would be an issue concerning running both the line-in and line-out wires in one cable as they are never used together anyway (one is transmit, the other receive). I also don't think there would be an issue of cross-talk between tip and ring (most 1/8" audio cables are twin leads within a single shield and if I'm not mistaken, the 15-pin Delta-44 cable runs all leads within a single shield), but I may be wrong on that one. Comments anyone? 73 de Joe - AB1DO -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachment s/20070220/6f05e3e1/attachment.html _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
