[Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match
Dick Dievendorff
dieven at comcast.net
Wed Jan 7 10:00:38 EST 2009
I have added an ESSB index entry to K3 Utility Help (it's in K3 Utility
version 1.2.1.6) to index the existing sentence the Crystal Filter
Configuration Dialog Help page that says ESSB uses the AM filter for
transmit.
You can use the Crystal Filter Configuration Dialog to set the AM transmit
filter that is used for ESSB.
The remaining steps, CONFIG:TX ESSB and the numeric keypad selection, are
not part of crystal filter configuration.
Dick, K6KR
-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Gary Smith
Sent: Wednesday, January 07, 2009 6:09 AM
To: Elecraft at mailman.qth.net
Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what I
see in waterfall do not match
A day or two ago I mentioned something about an difficulty getting
ESSB to work when using the Elecraft Configuration software. I was
suggested to look at the release notes in the utility.
The utility has no search feature so I highlighted all the text in
the release notes (under Help > K3 Firmware Release Notes) and used
<Ctrl C> to copy the test to a new test file. Starting at the top &
searching for ESSB I found where it was enabled and lower, under
update 2.23 I found the following:
"(1) Make sure the 6 kHz filter is configured correctly for AM
transmit; switch to AM mode, then specify this filter using
CONFIG:FLTX AM. (A future firmware release should allow use of the FM
filter for SSB as well, pending lab tests.)
(2) Locate CONFIG:TX ESSB. Select the desired extended bandwidth for
SSB transmit (3.0 to 4.0 kHz) using VFO A. Then tap `1´ on the keypad
to turn ESSB on/off. When on, the "+" icon in the mode area will turn
on. (If you turn ESSB on/off frequently, you might want to assign the
TX ESSB menu entry to a programmable function switch.)"
I had to set up ESSB separately from the "Edit Crystal Filters" by
doing the above but it indeed works.
73,
Gary
KA1J
> 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 <lists at subich.com> wrote:
>
> > From: Joe Subich, W4TV <lists at subich.com>
> > Subject: RE: [Elecraft] Mildly confused - Assumed filter width and what
I see in waterfall do not match
> > To: w7gj at q.com, tpbx at yahoo.com
> > Cc: elecraft at mailman.qth.net
> > 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: elecraft-bounces at mailman.qth.net
> > > [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of
> > Lance Collister
> > > Sent: Tuesday, January 06, 2009 10:22 AM
> > > To: tpbx at yahoo.com
> > > Cc: elecraft at mailman.qth.net
> > > 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: Elecraft at mailman.qth.net You must be a
> > subscriber
> > > to post to
> > > > the list. Subscriber Info (Addr. Change, sub,
> > unsub etc.):
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> > > >
> > > > 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
> > >
> > >
> > > _______________________________________________
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> > > Post to: Elecraft at mailman.qth.net
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> > > Elecraft web page: http://www.elecraft.com
>
>
>
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