On 03/05/2024 23:25, Justin Mann wrote:
I notice that the rig has the original 2.8K filter installed, so I’m thinking that I should add a few more filter to optimize performance
You should first determine whether you are suffering a problem that will benefit from this. XTAL filters will help if you are suffering from strong adjacent channel interference, but will degrade the pass band flatness, and, probably, the group delay characteristics (pulses will be more smeared out). (I don't know if all the K3 filters are FIR, which is needed for ideal group delay behaviour.)
with some different modes. Were I to add a 250 HZ CW filter would that also work at 500 HZ?
An ideal 250Hz filter would limit the maximum bandwidth to 250 Hz. It will be even less ideal than the DSP but will dominate the overall frequency response outside the 250 Hz (and even near the edges, within it). I'd expect the response to be 10s of dB down before 500 Hz, maybe over 60.
-- David Woolley ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
