On Fri, 2008-07-04 at 01:02 +0200, Magnus Danielson wrote: > > The analog side would need to allow for those signals also then. > > Naturally. The antenna-amplifier design will need to be more wideband > oriented. Should not be too hard thought. > > Cheers, > Magnus
I respectfully disagree; while making the wide-band receiver is an easy task, you now have a family of unrelated signals - often of widely varying signal strength. Once any of those signals becomes large enough to drive the receiver non-linear, you rapidly run into issues. AGC to maintain linearity isn't practical in this case - since reducing overall receiver gain to compensate for one large signal - like WWVB if you're close by that one transmitter - will potentially drive down the gain for desired LORAN and other signals to the point where you can't acquire and track many of the weaker but never the less desired signals. There's more than meets the eye initially when you attempt a receiver design of this type - at least as far as the analog section goes. Once it becomes 1's and 0's it's all straight forward - at least as far as this old ex-analog guy is concerned ;-) -Carl _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
