Roger Rehr W3SZ I know of a fellow (I think he is Bruno, over in Italy) who uses his CIAO H101 hardware tapped into a receiver after the crystal filter and says that he is doing well with it. And there seems to be an interest in trying this by others. I also have from the beginning wondered about trying the same. I would think that since the receiver then would have its agc working, that the SDR software should be used either in slow agc or fast agc mode to see which one is going to work the best in light of the receivers agc working in its i.f. that is being sampled. You can turn off the agc in the software and try that but it greatly reduces the gain in the softwares output. Just install a switch to your rig to turn off the agc. But do some test first before you go adding the switch. A slow agc in the rig seems to be desirable in my thinking and so if you have selectable agc attack settings, you can try them and see how they work. You will want to attenuate your rigs i.f. to the SDR hardware. Above I said: "You can turn of the agc in the software and try that but it greatly reduces the gain in the softwares output." In this case, if this works better due to your rigs agc, you will not want to attenuate the i.f. input from the crystal filter very much so that you have enough audio at the sound cards output. Experiment and then decide what is the best thing working via experimental test. CIAO hardware is a HF receiver that tunes 0 to 30 MHz and so it will tap into any HF i.f.
Dan _____________________________________________________________________ Interested in getting caught up on today's news? Click here to checkout USA TODAY Headlines. http://track.netzero.net/s/lc?s=198954&u=http://www.usatoday.com/news/front.htm?csp=24 [Non-text portions of this message have been removed]
