Jon, Do you have any stereo 1:1 audio isolation xfmrs laying around? If so, try inserting one between your presonus connections and the line-in jack of the SDR-1000. Make sure whatever xfmr you use, it has a good flat audio curve. I use a Scosche car audio device:
http://www.scosche.com/scosche_caraudio.aspx?CategoryID=33&ItemID=ES034 There are others like Jensen, Radio Shack, etc. This may not help, however it will not hurt, and if you ever run AM with any outboard power, you might very likely need one, as there has been a reported problem with an DSB image 11kcs below the transmitting freq. With this 1:1 isolation xfmr, that all goes away. Brian w5ami On 9/27/06, K6JEK <[EMAIL PROTECTED]> wrote: > I started this thread about poor sideband suppression. Just so you > all know, this is not a case of poor cable connections, an avenue I > diligently explored. I do believe the stereo mini jacks leave > something to be desired but they are not the source of my opposite > sideband grunk > > Jon, K6EK > > On Sep 27, 2006, at 8:05 AM, Robert McGwier wrote: > > > I love Willi's practical approach to things. I mean it is not as if we > > are attempting to preserve the beauty of this black box! I did exactly > > this on a radio I was having trouble with doing a demo. I do suspect > > that there are some who would feel uncomfortable removing the stack to > > drill the holes which is required to prevent damage to the connectors. > > But, this allowed the cheapest plug to seat properly and deox removed > > the microOhm resistance oxidization build up (my stinking greasy > > fingers > > and their acid "reflux" ). > > > > Bob > > N4HY > > > > > > Willi Reppel wrote: > >> Jeff, > >> > >> One possible cure to avoid said jiggling and twisting of the plugs is > >> to > >> drill larger holes into the backplate of the SDR1000 enclosure. The > >> relatively small holes may prevent certain types of male plugs to > >> reach the > >> bottom of the female connectors. Gold-plated plugs here in the old > >> countries > >> have normally a larger diameter than the holes. Also, the holes in the > >> cabinet may not be con-centric with the rings of the female > >> connectors of > >> the board stack and the larger holes I drilled make sure that the > >> plugs are > >> properly seated. No more jiggling here since a long time ago. > >> > >> 73 es gl > >> SM6OMH Willi > >> > > > > -- > > AMSAT VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats, > > NJQRP/AMQRP, QRP ARCI, QCWA, FRC. ARRL SDR Wrk Grp Chairman > > "You see, wire telegraph is a kind of a very, very long cat. > > You pull his tail in New York and his head is meowing in Los > > Angeles. Do you understand this? And radio operates exactly > > the same way: you send signals here, they receive them there. > > The only difference is that there is no cat." - Einstein > > > > > > _______________________________________________ > > 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 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 > -- "There is nothing more uncommon than common sense." -- Frank Lloyd Wright _______________________________________________ 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
