Right, Don! I still believe that many K3 users are under the erroneous impression that the roofing filter determines the receiver bandwidth. It does not. The HI and LO knobs do.
The only thing the roofing filter does is determine the MAXIMUM possible bandwidth of the receiver. In 99% of cases, an SSB roofing filter is good enough. (That statement is going to draw some fire.) It's a little bit like this: the roofing filter is like the credit limit on your Visa card. You can't go any higher than that. But in any typical month, you spend far less than that... and on the K3 the amount you *actually* spend is set by the HI and LO cut controls. This is why I advised the original poster: you wanna know what 1.8 kHz sounds like? Set your HI LO controls to a bandwidth of 1.8 kHz. Then decide whether it 1/ is tolerable; and 2/ increases intelligibility enough to make the investment worth it. I happen to think that 1.8 kHz is too narrow. But that's just me. ________________________________ I say that because in all cases with the K3, it is the DSP that determines the filter width rather than the roofing filter. What I am saying is that even if you put in a 1.8k filter, SSB at a 1.8k width will sound the same as it does right now using only the DSP. 73, Don W3FPR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
