[EMAIL PROTECTED] wrote: >Hi Dan, > >The Janus board (hpsdr.org) has a jumper selectable 15dB attenuator fitted to >its input so the board can be used with an existing SDR1000. The attenuator >can be taken out of circuit and the input connected directly to the A/D >converter on the card for optimum SDR performance. > >This is intended to allow for future designs that have lower gain after the >QSD or for those that don't mind doing a little surgery on their SDR1000 in >order to reduce the gain. > >73's Phil...VK6APH > > > > > > >
Great. Sounds a lot like what I once called the SDR 497. A couple of questions: 1) Will it also solve the microphone gain problem? Be nice to use a much wider array of microphones and microphone impedances than today. 2) Will there be an added provision to put the CW keying downstream of the software (I'm thinking of a design point where the software transmit (in cahoots with this option) really was "continuous wave" and the key plugged in downstream far enough to actually do the On/Off keying in the classical way? Those are two things that have been discussed on this list server before besides what's already under discussion. If it initially is a drop in added box that replaces the D44 and is otherwise mostly compatible, even with attenuation on, that's still a big step up, depending on the form factor consumed. If it could also solve these problems, there would be, I think, a very substantial market for it beyond kits. It would certainly answer everything I could think of that I find troublesome about today's SDR hardware. except maybe the portability/transportability issue. But, even there, it might be more tractable than today one way or another if there was one and only one thing to hook up. Today, I think many of us have two or three sound cards. I know I have three. Larry WO0Z _______________________________________________ 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
