If there's a Radio Shack nearby, they also sell ground-loop isolators: http://www.radioshack.com/product/index.jsp?productId=2062214
- Jeff, K6jca --- "A.R.S. - W5AMI" <[EMAIL PROTECTED]> wrote: > 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 > _______________________________________________ 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
