This refers to the RF bandpass filters in the receiver front end. Geant NQ5T
> On Jan 19, 2021, at 12:43 AM, RVZ via Elecraft <[email protected]> > wrote: > > I believe there are no crystal Roofing Filters in the standard K4 model. Yet > the manual talks about "one set of receive filters". Please advise the type > and bandwidth of these filters? (DSP?) > > From the K4 Manual: There are three models: the basic K4, with one set of > receive filters and one analog-to-digital converter (ADC); the K4D, with a > second set of receive filters and a second ADC; and the K4HD, which adds a > superheterodyne front end that can be enabled as needed to provide even > greater dynamic range. The superhet module uses high-performance, narrow-band > crystal filters such as those used in the Elecraft K3S. Thanks & 73, Dick- > K9OM > ______________________________________________________________ > 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] ______________________________________________________________ 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]
