> I tried to set the USB filter bandwidth to > use the 6 KHz, but whenever I tried to XMIT I got an error. > Apparently the widest filter permitted for SSB XMIT is 2.7 > KHz, and this setting also somehow restricts the > receive filter capability also.
The only filters permitted for SSB transmit are 2.7 or 2.8 Khz (unless you have enabled ESSB). > I had the same basic idea, but to use the 6 kHz wide flter > for receive in USB mode for use with the "wide" bandwidth > setting of WSJT, to be able to search a wider bandwidth for > callers on EME. The maximum bandwidth permitted in data modes (or USB/LSB) is 4.0 KHz even with a 6 KHz filter. The DSP is limited to a 4200 Hz high frequency cutoff in all modes except CW where the maximum frequency is about 2400 Hz. 73, ... Joe, W4TV > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Lance Collister > Sent: Tuesday, January 06, 2009 10:22 AM > To: [email protected] > Cc: [email protected] > Subject: Re: [Elecraft] Mildly confused - Assumed filter > width and what I see in waterfall do not match > > > Thomas Bingenheimer wrote: > > I have been using several programs (Cocoamodem, mostly) to > do PSK31, > > via Data A. Instead of being able to use the full 4khz waterfall > > bandwidth available in, say, Cocoamodem, I have been limited to the > > available width in the only filter I had in the rig, the 2.7 khz > > 5-pole appeared to limit me to about 2.7 khz. So, I added the 6 khz > > filter, set it up for SSB (and enable ESSB, 4.0 khz). I now > show 3 khz > > (500 to 3500 hz) in the waterfall. I suspect I have overlooked > > something, but it is not clear to me what. Does anybody > have any idea? > > Thanks! > > > > > > > > _______________________________________________ Elecraft > mailing list > > Post to: [email protected] 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 > > > > > Hello Tom, > > I had the same basic idea, but to use the 6 kHz wide flter > for receive in USB mode > for use with the "wide" bandwidth setting of WSJT, to be able > to search a wider > bandwidth for callers on EME. I tried to set the USB filter > bandwidth to use the > 6 KHz, but whenever I tried to XMIT I got an error. > Apparently the widest filter > permitted for SSB XMIT is 2.7 KHz, and this setting also > somehow restricts the > receive filter capability also. > > I have not figured it out yet for sure, but it seems that > there currently is no > way to open up the width of the receiver in USB past 4 kHz > :-( It would sure be > more flexible if there turns out to be some way to permit > wider filter > possibilities in receive! > > Please let me know if you discover some way to do this - I am > sure there are > others besides us who also would be interested in this > option! TNX and GL! VY > 73, Lance > > -- > Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, > WA1JXN/C6A, ZF2OC/ZF8) P.O. Box 73 Frenchtown, MT 59834 USA > QTH: DN27UB > TEL: (406) 626-5728 URL: http://www.bigskyspaces.com/w7gj > 2m DXCC #11, 6m DXCC #815 > > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > 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 _______________________________________________ Elecraft mailing list Post to: [email protected] 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
