Remember the noise/gain equation and how what determines sensitivity is ultimately a systems noise figure. ... when used with a transverter or an EME preamp the noise figure of the system will essentially be set by the noise figure of the first stage. Subsequent stages have much less effect on the noise figure, as the noise contribution is divided by the gain of the preceding stage.
On Tue, 13 Oct 2020 at 21:47, Richard Donner <[email protected]> wrote: > Wayne, > Thank you. > My main issue here is weak signals. There are no > ham stations near me to cause interference. > > A good antenna is what I ought to have but that is not happening. > Richard > Richard Donner > > On Tue, Oct 13, 2020 at 12:56 PM Wayne Burdick <[email protected]> wrote: > > > Hi Richard, > > > > All K4 models utilize the same front-end circuitry (preamps, filters, > > etc.), so all will have virtually identical sensitivity for a given gain > > setting. These in turn will be similar to the K3/K3S. > > > > 73, > > Wayne > > N6KR > > > > > On Oct 12, 2020, at 4:52 PM, Richard Donner <[email protected]> > > wrote: > > > > > > Anyone have an idea which version of the k4 would have the most > > sensitivity > > > for weak signals? > > > Thanks Richard > > > > > > > ______________________________________________________________ > 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]
