This is what has disturbed me - I have turned on ESSB (set to 4 khz), and I have selected the 6 khz filter, but in no case do I get 4 khz in any mode. specifically, in Data A with DSP set wide open at 4 khz, the waterfall always cuts off at 3500 hz in any software I use. I do not understand why I cannot get the full 4 khz bandwidth. The firmware is at 2.67, DSP at 1.96. Does anyone see 4khz in the waterfall, and with the ability to xmit across the range?
--- On Wed, 1/7/09, Joe Subich, W4TV <[email protected]> wrote: > From: Joe Subich, W4TV <[email protected]> > Subject: RE: [Elecraft] Mildly confused - Assumed filter width and what I see > in waterfall do not match > To: [email protected], [email protected] > Cc: [email protected] > Date: Wednesday, January 7, 2009, 12:59 AM > > 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
