In addition to the tuneable IF crystal filter, there are the KAF2 and KDSP audio filter option (check out the Elecraft website for details).
73, Matt VK2RQ > On 2 Jun 2014, at 11:38 am, Mike K8CN <[email protected]> wrote: > > Gavin, > The K2 uses a single voltage-variable capacitance (varicap) diode-tuned > crystal filter on the main RF board, and the filter bandwidths are > programmable by the user within a moderate range. A separate fixed > bandwidth crystal filter is present on the KSB2 SSB option board if > installed. A "no additional equipment" procedure for adjusting the variable > bandwidth filter is described in the K2 manual, but most operators use a > computer-based spectrum analysis tool (e.g. Spectrogram) to visualize the > filter passband while the tuning adjustment is being made. Check out Don, > W3FPR's web page (http://w3fpr.com/) for a link to the free versions of > Spectrogram and tips on adjusting the K2 filter settings for different modes > and desired bandwidths. > > 73, > Mike, K8CN > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/Elecraft-K2-filters-tp7589831p7589832.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > 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]
