You can easily build a highpass filter. Sent from my iPad
> On Dec 22, 2018, at 10:55 PM, Bob Nielsen, N7XY <[email protected]> wrote: > > DLW Associates makes a filter which has 40 dB rejection across the entire > broadcast band. It is available from DX Engineering. > >> On 12/22/18 7:20 PM, Al Lorona wrote: >> No, not a null, but a rolloff. When I quoted -40 dB I didn't mean a notch >> at one frequency, but the stopband level reached by the time you get well >> into the broadcast band. So that would be -40 dB on all AM stations below a >> certain frequency. >> The K3 is a good receiver, but every receiver has its limits and certainly >> the K3 will suffer once an interfering signal gets above a certain level. >> A trap or stub would work, but my point was that it would be unnecessary if >> using a link-coupled tuner. Attenuating a 50 kW station by 40 dB makes it >> sound like a 5 W station. >> Al W6LX >> >> >> >>>>> That said, is suppose it IS possible that a tuner/antenna combination >>>>> just happened to have a deep null right on the frequency of a nearby >>>>> broadcast station >> >> >> ______________________________________________________________ >> 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] ______________________________________________________________ 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]
