Jim, Yes, there is a special set of 4 filters labeled RTTY filters in the K2 - they can be turned on and off via the menu. These 4 filters are independent of the settings used for the other modes (CW and SSB). The RTTY filter set also allows independent adjustment of the menu SSBC parameter - it would normally be set to 1-1 for the best IMD performance on transmit.
Your BFO range may limit the filter bandwidth that you can achieve should you attempt to use a narrow filter aligned at a high tone because the BFO range is not adequate to handle it. You will be able to adjust one sideband or the other as a narrow filter, but normally not both, so you may have to manipulate the sideband reversal capability of your RTTY hardware or software to adjust for this situation. Adjusting the filters to demodulate tones below 1kHz is usually not a problem (as is th ecase for most soundcard data modes), but if you attempt to demodulate the RTTY high tones 2175 and 2225 Hz in a narrow filter, you can expect to run out of range. 73, Don W3FPR > -----Original Message----- > > While chasing 3Y0X on the upper bands I realized those > bands may no be doing as well as the middle and lower > bands and especially on RTTY receive. As the K2 is > only capable of doing RTTY with AFSK I'm presuming LSB > mode would be used like other rigs. The received RTTY > in MMTTY on the K2 looks much more ragged and seems > less copyable than with my IC-746Pro. Is there a > special filter setting for RTTY? > > Now to find some time to work on it and make a great > rig even better. There is just too many things do and > not enough time to do them when you are retired. -;) > > Thanks and have a great day!! > > Jim, AB0UK > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
