On Sun,7/26/2015 2:02 PM, Bill Breeden wrote:
Since Sherwood's Dynamic Range Narrow Spaced measurement is of great interest to CW operators, it only makes sense to make the measurement using a CW filter, optional or not. The measurement would be meaningless to CW operators if made using the stock sideband filter.
Not really -- the K3, K3S, and KX3 IF filters are implemented in DSP. The plug-in filters are additional roofing filters that protect the DSP from overload by strong signals outside of their passband. The K3, K3S, and KX3 have very good CW receivers without the optional roofing filters. The roofing filters simply allow them to work very close to very strong signals, AND cascade with the DSP filter to provide additional rejection outside the passband.
73, Jim K9YC ______________________________________________________________ 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 Message delivered to [email protected]
