Re: [Flexradio] Poor Audio Connections producing DSSB
At 07:58 AM 1/11/2007, root [knesbitt] wrote: >Dave, >you'll have the same trouble using either DeOxit red or Gold on the >stainless-steel mini-plug [HOSA]. I tried them all. In order to >eliminate the oxidation that occurs over time between the plug and jack >you'd be best advised to re-terminate the cables with 3.5mm gold-plated >plugs. Or, if you're cutting the end off the cable, just solder the wires to the SDR1000 boards? > I have done this and its completely eliminated the connector >interface problem. As well I've found that a very very light coating of >DeOxit ProGold contact conditioner on these radio jacks removes the the >previous grudge and keeps them functioning 100% with the gold connectors. >Best 73, BTW, when doing my phased array research with SDR1000s a couple years ago, I found that most audio cables have really, really crummy shielding (even ones marketed as "high performance"). I had problems with 60 Hz and coupling from switching power supplies, etc.. Best performance (in terms of interference rejection, etc.) was with cat5 style twisted pairs. Jim Brown, K9YC, has studied this in some detail, and found that it's because in order to actually work for network use, the twist rate and mechanical properties have to be very well controlled. That perfect symmetry and control makes the self-shielding of twisted pair work very, very well (better than most coax). Based on that experience, I'd almost think that the optimum connector for the next go around on an SDR1000 (if it has audio pairs) would be the RJ45 wired as for networks. (Of course, my real preference is to integrate the data converters and just send a digital data stream) James Lux, P.E. Spacecraft Radio Frequency Subsystems Group Flight Communications Systems Section Jet Propulsion Laboratory, Mail Stop 161-213 4800 Oak Grove Drive Pasadena CA 91109 tel: (818)354-2075 fax: (818)393-6875 ___ 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] Poor Audio Connections producing DSSB
Dave, you'll have the same trouble using either DeOxit red or Gold on the stainless-steel mini-plug [HOSA]. I tried them all. In order to eliminate the oxidation that occurs over time between the plug and jack you'd be best advised to re-terminate the cables with 3.5mm gold-plated plugs. I have done this and its completely eliminated the connector interface problem. As well I've found that a very very light coating of DeOxit ProGold contact conditioner on these radio jacks removes the the previous grudge and keeps them functioning 100% with the gold connectors. Best 73, Kirb - VE6IV -- ZS6AVM Wrote : Thanks so much for all the responses I will see if I can find the recommended contact cleaner "DetoxIT/Progold" locally, or perhaps something similar I'm of the opinion that the poor contact may be as a result of oxidization as the SDR and audio cables are not ever moved, and the cables therefore are not tampered with Hopefully I'll find the "DetoxIT/Progold" out here, and if so will give that a try, before resorting to more drastic measured Best regards Dave ___ 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/
Re: [Flexradio] Poor Audio Connections producing DSSB
ZS6AVM Wrote : Thanks so much for all the responses I will see if I can find the recommended contact cleaner "DetoxIT/Progold" locally, or perhaps something similar I'm of the opinion that the poor contact may be as a result of oxidization as the SDR and audio cables are not ever moved, and the cables therefore are not tampered with Hopefully I'll find the "DetoxIT/Progold" out here, and if so will give that a try, before resorting to more drastic measured Best regards Dave -Original Message- From: Tim Ellison [mailto:[EMAIL PROTECTED] Sent: 10 January 2007 10:02 PM To: Willi Reppel; Dave Scully; flexradio@flex-radio.biz Subject: RE: [Flexradio] Poor Audio Connections producing DSSB "Other users reported earlier that they sprayed some type of liquid on the male and /or female connectors to maintain a low contact resistance." You are referring to DetoxIT/ProGold for the contact cleaner. It works very well. http://www.radioshack.com/product/index.jsp?productId=2104746&cp=&pg=4&o rigkw=cleaner&kw=cleaner&parentPage=search -Tim Integrated Technical Services www.itsco.com "Si fractum non sit, id reficere" -Unknown Roman consultant -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Willi Reppel Sent: Wednesday, January 10, 2007 2:43 PM To: [EMAIL PROTECTED]; flexradio@flex-radio.biz Subject: Re: [Flexradio] Poor Audio Connections producing DSSB Dave, Had the same problem when I got my SDR1k almost 4 years ago. I replaced all male plugs on the cables between soundcard and SDR1k with goldplated ones. Also, the female connectors of my SDR1k were not flush with the backplate of the cabinet and I drilled larger holes to make sure the plugs are well sea-ted. Neither received nor transmitted DSSB acci-dently since then. Other users reported earlier that they sprayed some type of liquid on the male and /or female connectors to maintain a low contact resistance. vy 73 es gl Willi - Original Message - From: <[EMAIL PROTECTED]> To: Sent: Wednesday, January 10, 2007 12:51 PM Subject: [Flexradio] Poor Audio Connections producing DSSB > ZS6AVM Wrote: > > I've had this issue crop-up a few times now, the SDr transmits in DSSB > when in SSB mode > Seems as though the audio connects on the back of the SDR Box do not > make good contact > After un-plugging and re-plugging the audio connections, the problem > disappears > Its seems to cop-up every so often > Apart form had wiring the audio cables to the SDr Box, is there an easy > fix for this problem, one which will ensure that the connections remain > good ? > > Best regards > > Dave > ZS6AVM > > *** > > Disclaimer: The information contained in this communication is > confidential and may be legally privileged. > > It is intended solely for the use of the individual or entity to whom it > is addressed and others authorised to receive it. > > Any review, retransmission, dissemination, copying, disclosure or other > use of, or taking of any action in reliance upon, this information by > person or entities other then the intended recipient is prohibited. > > If you have received this message in error, please notify the sender > immediately by e-mail, facsimile or telephone and return and/or destroy > the original message and all copies from any computer. > > > Denel (Pty) Ltd exercises no editorial control over e-mail messages > originating in the organisation and does not accept any responsibility for > either the contents of the message or any copyright laws that may have > been violated by the person sending this message. > > Denel (Pty) Ltd is neither liable for the proper and complete transmission > of the information contained in this communication nor any delay in its > receipt. > > This message should not be copied or used for any purpose other than > intended, nor should it be disclosed to any other person. > > *** > -- next part -- > An HTML attachment was scrubbed... > URL: > http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachment s/20070110/f1bb1e0a/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 m
Re: [Flexradio] Poor Audio Connections producing DSSB
"Other users reported earlier that they sprayed some type of liquid on the male and /or female connectors to maintain a low contact resistance." You are referring to DetoxIT/ProGold for the contact cleaner. It works very well. http://www.radioshack.com/product/index.jsp?productId=2104746&cp=&pg=4&o rigkw=cleaner&kw=cleaner&parentPage=search -Tim Integrated Technical Services www.itsco.com "Si fractum non sit, id reficere" -Unknown Roman consultant -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Willi Reppel Sent: Wednesday, January 10, 2007 2:43 PM To: [EMAIL PROTECTED]; flexradio@flex-radio.biz Subject: Re: [Flexradio] Poor Audio Connections producing DSSB Dave, Had the same problem when I got my SDR1k almost 4 years ago. I replaced all male plugs on the cables between soundcard and SDR1k with goldplated ones. Also, the female connectors of my SDR1k were not flush with the backplate of the cabinet and I drilled larger holes to make sure the plugs are well sea-ted. Neither received nor transmitted DSSB acci-dently since then. Other users reported earlier that they sprayed some type of liquid on the male and /or female connectors to maintain a low contact resistance. vy 73 es gl Willi - Original Message - From: <[EMAIL PROTECTED]> To: Sent: Wednesday, January 10, 2007 12:51 PM Subject: [Flexradio] Poor Audio Connections producing DSSB > ZS6AVM Wrote: > > I've had this issue crop-up a few times now, the SDr transmits in DSSB > when in SSB mode > Seems as though the audio connects on the back of the SDR Box do not > make good contact > After un-plugging and re-plugging the audio connections, the problem > disappears > Its seems to cop-up every so often > Apart form had wiring the audio cables to the SDr Box, is there an easy > fix for this problem, one which will ensure that the connections remain > good ? > > Best regards > > Dave > ZS6AVM > > *** > > Disclaimer: The information contained in this communication is > confidential and may be legally privileged. > > It is intended solely for the use of the individual or entity to whom it > is addressed and others authorised to receive it. > > Any review, retransmission, dissemination, copying, disclosure or other > use of, or taking of any action in reliance upon, this information by > person or entities other then the intended recipient is prohibited. > > If you have received this message in error, please notify the sender > immediately by e-mail, facsimile or telephone and return and/or destroy > the original message and all copies from any computer. > > > Denel (Pty) Ltd exercises no editorial control over e-mail messages > originating in the organisation and does not accept any responsibility for > either the contents of the message or any copyright laws that may have > been violated by the person sending this message. > > Denel (Pty) Ltd is neither liable for the proper and complete transmission > of the information contained in this communication nor any delay in its > receipt. > > This message should not be copied or used for any purpose other than > intended, nor should it be disclosed to any other person. > > *** > -- next part -- > An HTML attachment was scrubbed... > URL: > http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachment s/20070110/f1bb1e0a/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/ ___ 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/
Re: [Flexradio] Poor Audio Connections producing DSSB
Dave, Had the same problem when I got my SDR1k almost 4 years ago. I replaced all male plugs on the cables between soundcard and SDR1k with goldplated ones. Also, the female connectors of my SDR1k were not flush with the backplate of the cabinet and I drilled larger holes to make sure the plugs are well sea-ted. Neither received nor transmitted DSSB acci-dently since then. Other users reported earlier that they sprayed some type of liquid on the male and /or female connectors to maintain a low contact resistance. vy 73 es gl Willi - Original Message - From: <[EMAIL PROTECTED]> To: Sent: Wednesday, January 10, 2007 12:51 PM Subject: [Flexradio] Poor Audio Connections producing DSSB > ZS6AVM Wrote: > > I've had this issue crop-up a few times now, the SDr transmits in DSSB > when in SSB mode > Seems as though the audio connects on the back of the SDR Box do not > make good contact > After un-plugging and re-plugging the audio connections, the problem > disappears > Its seems to cop-up every so often > Apart form had wiring the audio cables to the SDr Box, is there an easy > fix for this problem, one which will ensure that the connections remain > good ? > > Best regards > > Dave > ZS6AVM > > *** > > Disclaimer: The information contained in this communication is > confidential and may be legally privileged. > > It is intended solely for the use of the individual or entity to whom it > is addressed and others authorised to receive it. > > Any review, retransmission, dissemination, copying, disclosure or other > use of, or taking of any action in reliance upon, this information by > person or entities other then the intended recipient is prohibited. > > If you have received this message in error, please notify the sender > immediately by e-mail, facsimile or telephone and return and/or destroy > the original message and all copies from any computer. > > > Denel (Pty) Ltd exercises no editorial control over e-mail messages > originating in the organisation and does not accept any responsibility for > either the contents of the message or any copyright laws that may have > been violated by the person sending this message. > > Denel (Pty) Ltd is neither liable for the proper and complete transmission > of the information contained in this communication nor any delay in its > receipt. > > This message should not be copied or used for any purpose other than > intended, nor should it be disclosed to any other person. > > *** > -- next part -- > An HTML attachment was scrubbed... > URL: > http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070110/f1bb1e0a/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/
Re: [Flexradio] Poor Audio Connections producing DSSB
Dave, Some people tie wrap the audio connections to the parallel connector cable comming from the SDR-1000 to avoid them being pulled loose. If you're a little more adventurous, you might want to check out Mike King's website < www.km0t.com >. He moved the modified Delta-44 break-out board inside the SDR-1000, making the 15-pin d-sub connector the audio connector. As the break-out board does nothing more than filter and pass on all the audio connections (as well as add flexibility on grounding), the 15-pin connector can also be used to hook up to other sound cards. 73 de Joe - AB1DO - Original Message - From: <[EMAIL PROTECTED]> To: Sent: Wednesday, January 10, 2007 06:51 Subject: [Flexradio] Poor Audio Connections producing DSSB > ZS6AVM Wrote: > > I've had this issue crop-up a few times now, the SDr transmits in DSSB > when in SSB mode > Seems as though the audio connects on the back of the SDR Box do not > make good contact > After un-plugging and re-plugging the audio connections, the problem > disappears > Its seems to cop-up every so often > Apart form had wiring the audio cables to the SDr Box, is there an easy > fix for this problem, one which will ensure that the connections remain > good ? > > Best regards > > Dave > ZS6AVM ___ 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] Poor Audio Connections producing DSSB
ZS6AVM Wrote: I've had this issue crop-up a few times now, the SDr transmits in DSSB when in SSB mode Seems as though the audio connects on the back of the SDR Box do not make good contact After un-plugging and re-plugging the audio connections, the problem disappears Its seems to cop-up every so often Apart form had wiring the audio cables to the SDr Box, is there an easy fix for this problem, one which will ensure that the connections remain good ? Best regards Dave ZS6AVM *** Disclaimer: The information contained in this communication is confidential and may be legally privileged. It is intended solely for the use of the individual or entity to whom it is addressed and others authorised to receive it. Any review, retransmission, dissemination, copying, disclosure or other use of, or taking of any action in reliance upon, this information by person or entities other then the intended recipient is prohibited. If you have received this message in error, please notify the sender immediately by e-mail, facsimile or telephone and return and/or destroy the original message and all copies from any computer. Denel (Pty) Ltd exercises no editorial control over e-mail messages originating in the organisation and does not accept any responsibility for either the contents of the message or any copyright laws that may have been violated by the person sending this message. Denel (Pty) Ltd is neither liable for the proper and complete transmission of the information contained in this communication nor any delay in its receipt. This message should not be copied or used for any purpose other than intended, nor should it be disclosed to any other person. *** -- next part -- An HTML attachment was scrubbed... URL: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/attachments/20070110/f1bb1e0a/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/
