In response to W4TV Joe's question: The frequency offset for the 8-pole crystal filter is 0.00 Hz.
The Pitch is 650 Hz on the K3S. And the Mark for RTTY is the standard 2125 Hz. I've got a new 400 Hz filter on its way so I'll see what the problem is. I just hope it's not an RF board. I took ESD precautions very seriously while building it so, fingers crossed. 73, Jamie WB4YDL Sent from my iPad > On Sep 18, 2015, at 2:30 PM, James C. Hall, MD <heart...@nwtcc.com> wrote: > > Working with my newly constructed K3S today, I noticed that receiving through > the FL4 crystal filter (400 hz, 8-pole) was noticeably suppressed. Through > the FL3 (1.8 kHz) filter, an RTTY signal would be nice and strong with good > S-meter indications. Going to 400 Hz the signal would nearly be lost and I > could not decode it. Going to FL5 (250 Hz), the S-meter would pick up again > with strong signals. > > There's not much to check on the Config menu except the FL4 GN and it's at > max (8 db) - not much change. > > Is there something else I should do to deal with this ? > > 73, Jamie > WB4YDL > > Sent from my iPad ______________________________________________________________ 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
