Bernie, Yes, the RTTY filter settings are handy. I would recommend you set the RTTY filter widths to FL1 = OP1, FL2 = 1.00, FL3 = 0.70 and FL4 = 0.40 Set the FL1 BFOs for RTTY and RTTYr to you LSB and USB FL1 settings. The other filters should be centered on the same audio frequency, usually 1000 Hz (I use 800 Hz as an alternative if the BFO range will not allow the narrow filter to be centered that high (just remember what frequency you used). There should be no need for further 'tweaking'.
In operation, you would usually use FL1 and see the full width of the passband in the waterfall display. Move the K2 VFO so your desired signal appears at 1000 Hz in the waterfall display, and then click on that signal's track. If QRM comes on the band and overloads the K2 AGC with a strong signal in the passband, you can tap the XFIL button to narrow the passband and reduce the strength of the offending signal. Hint, also 'lock' your transmit frequency in the software so you don't end up 'walking the band' if your filters cause a few Hz shift in the sudio when changed. Yes, you have an independent SSBCr setting with the RTTY filters - set it for 1-1 for data modes to keep your IMD low. You also have an independent SSBA setting. If you control the level into your mic with your soundcard digital interface or from the computer, you should be able to set SSBAr to 1 and leave it there. 73, Don W3FPR > -----Original Message----- > > Having become aware, from previous Posts, of the > separate FL filter settings for RTTY (there being > separate filters for RTTY), I have a few questions. > > I want to set up the RTTY FL filter settings for use > with PSK31/63. As a good starting point, I assume the > RTTY settings should be set to match the SSB settings. > Same for the BF settings? No problems experienced > using SSB for PSK. > > Currently, my FL settings are: > > SSB RTTY > FL1 OP1 2.20 > FL2 OP1 2.00 > FL3 1.80 1.80 > FL4 0.75 1.60 > > I haven't looked into the BF settings as yet. > > Also, when switching to RTTY, does that imply I'm > using the SSBCr setting? > > I may of course have to tweak the settings as I go > along. > > Any comments/suggestions appreciated. > > 72 de N8PVZ > ---bernie > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.25/593 - Release Date: 12/19/2006 1:17 PM _______________________________________________ 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
