In a message dated 9/18/2007 4:36:17 P.M. Eastern Daylight Time, [EMAIL PROTECTED] writes: If the roofing filter is able to knock down the unwanted signal to a level the DSP can handle, then the DSP will not overload and the DSP itself will provide great ultimate rejection.
Well, sorta kinda. If the unwanted signal gets in and pumps the AGC, then the DSP might knock down the signal but won't be able to do anything about the AGC pumping. Then, you won't hear the signal if it is weak. That is the whole issue of the DSP being in or out of the AGC loop and it generated a mountain of controversy with the Orion when TT moved the DSP to within the loop. I believe I read the K3 did not follow that mistake but a little clarification from the gurus who know a whole lot more about this issue would be helpful. Craig "Buck" k4ia Fredericksburg, Virginia USA ************************************** See what's new at http://www.aol.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
