Hey people, long time no see, eh (granted I usually hang out in the astronomy section, but I think it still applies)? Sorry I've been away so long, I've had quite a bit to do. Now to the grist of it: Assume a hypothetical situation for a moment. Allow that we have in our hands a device which can transceive in the range of ~300 - ~3,400 hz, the frequencies at which telephones operate, approximately. Now, assuming that one has appropriate software, compatible with the language in which information is encoded therein, is there any reason that one could not, in principle, receive or transmit anything to or from said wires? Is there a modulation factor to be taken into account? What I'm looking at is a question of EM emanations and signatures vs. imprinting signals. Any ideas? ------------------ Este est percepi - to be is to be perceived. Please Register or Log in to view the hidden image! -R.