Thanks for the suggestion, but that's not it... all the cables are well seated (unless there's a defective cable). Also, I don't detect this anomaly when I'm using PSK31 with the VAC, only when using the microphone.
Thanks, John W2FS Tim Ellison wrote: >Check to make sure the I/Q input cable (to line out) on the back of the >SDR1K is seated all the way in. Having it pop out a little bit can >cause the echo you are hearing. > >-Tim >--- >Tim Ellison ( [EMAIL PROTECTED] ) >Integrated Technical Services ( http://www.itsco.com ) > > >-----Original Message----- >From: John Hansen [mailto:[EMAIL PROTECTED] >Sent: Thursday, July 13, 2006 11:07 AM >To: John Basilotto >Cc: [EMAIL PROTECTED]; Tim Ellison; FlexRadio@flex-radio.biz >Subject: Re: [Flexradio] More on Audio Problem > >Thanks for the assistance, John. I'm getting really close to solving >this problem. I rewired the cable and the hum is now gone. I'm not >sure exactly what I did wrong the last time around, but I'm pretty sure >that part is now good. The audio also sounds good both on the PowerSDR >monitor and on my 2nd receiver. Except for one thing.... I can hear two > >voices in both the monitor and in the receiver (note I'm monitoring with > >headphones, so I'm reasonably certain that this is not an audio feedback > >problem). In addition to my normal voice I here a second voice that is >very low pitched and sounds like it is on the wrong sideband. Also, >strangely enough, it is delayed by a few milliseconds from my normal >voice. I thought this might be an image rejection problem and I've been > >playing with the transmit image rejection controls but no change in the >settings of those controls seems to have much of an effect on it. > >I can tell this audio is going to sound fabulous when I finally get this > >last issue resolved. I really appreciate your patience in working with >me on it. > >John Hansen W2FS > > >John Basilotto wrote: > > > >>Gentlemen, >> >>Everything suggested on the reflector with regard to John problem >> >> >treats the > > >>symptoms and not the root cause of the hum problem. The GL will work >> >> >fine > > >>plugged directly into the SDR mic jack but it must be wired properly-at >> >> >both > > >>ends. >> >>Heil 4- pin connector >>Pin 1 >> >> >shield--------------------------------to-----------------------Pin 7 > > >>of 8 Pin connector >>Pin 2 Mic audio---------------------------to-----------------------Pin >> >> >8 > > >>Pin 3 >> >> >PTT-----------------------------------to-----------------------Pin 6 > > >>Pin 4 >> >> >PTT-----------------------------------to-----------------------Pin 5 > > >>None of the wires should contact any of the other wires nor the 8-pin >>connector case-- This is a very important! >> >>You will need to change the In 3 level to -10 in the D44 panel, up the >> >> >mic > > >>gain to about 65, and use the EQ [the GL has too much low end response >> >> >and > > >>will not sound good w/o EQ] use the SDR EQ cut the low by at least >> >> >6Db, > > >>boost the mid by 3 DB and the High by 6 db. Fine-tune these settings >> >> >on the > > >>air. >> >>All the comments regarding Behringer mixers and W2IHY products are >> >> >correct; > > >>however, they should be used as "enhancers" and not a fix for the root >>problem. >> >>Also, some Heil cables [other cables for that matter] have been known >> >> >to > > >>have hairline shorts. You might want to check for shorts between each >> >> >of the > > >>wires. >> >>73, and good luck. >> >> >>John P. Basilotto >>W5GI >>Marketing and Product Manager >>FlexRadio Systems >>Office 512-250-8595 >>Mobile 512-663-6727 >> >>-----Original Message----- >>From: [EMAIL PROTECTED] >>[mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] >>Sent: Wednesday, July 12, 2006 10:09 PM >>To: Tim Ellison; [EMAIL PROTECTED]; FlexRadio@flex-radio.biz >>Subject: Re: [Flexradio] More on Audio Problem >> >> >> >> >> >>>can kill a bunch of birds with one stone by using Julius' EQplus >>> >>> >(W2IHY) > > >>>as a preamp, EQ, compressor/limiter, downward expander and an effects >>>processor that you can use to feed three separate rigs with the same >>> >>> >mic > > >>>and key all the rigs with a single PTT switch. It is a little pricey, >>> >>> >>> >>> >>Tim, >> >>A little pricey? Yep... I would suggest that John runs the Gold line >> >> >into > > >>the Delta 44 direct (INS 2) via a Berhinger UB 502. The Berhinger Box >> >> >will > > >>provide the necessary low loise peramp, as well as some basic EQ >> >> >tailoring > > >>to flatten out the extreme base heavy nature of that particular mic. >> >> >You can > > >>get a UB 502 at your favorite Internet Vendor for about $35. The >> >> >Berhinger > > >>box has excellent isolation and is virtually hummm proof. Also it will >> >> >give > > >>you another 2 input source channels if you need them, and a headphone >>output, etc etc.. The Berhinger box also has takeoffs and return for >>external effect processor, but do hams need that? I thought reverb went >> >> >out > > >>with the 50s' >> >>IMHO the danger of the EQPlus (besides taking tomorrows breakfast from >> >> >the > > >>kids hi..hi...) is that if mis adjusted, as so may of them are, you >> >> >will > > >>introduce excessive sub-audio base rumble into your transmitted signal. >> >> >This > > >>looks like a DC signal on your transmitted SSB signal, if you look at >> >> >it, > > >>and it is very poor operating practice. W5GI, John, may wish to jump >> >> >in > > >>here, if he is reading this thread, and comment further. He is somewhat >> >> >of > > >>an expert on the Julius boxes and can confirm the issues related to >> >> >their > > >>constant mis-adjustment by most Hams that have them in the shack. >>Personally, I think the are a little dangerous for most Hams that have >>limited experience with pro-audio. >> >>Just my 2 cents, >> >>-Dan K6KDK >> >>I >> >> >>_______________________________________________ >>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
