[Kenwood] TS-2000 PSK31 CW Filter use

Sun, 17 Nov 2002 22:12:37 -0000

Sidetone frequency is the pitch of the cw sidetone and most rigs
automatically provide an offset equal to this frequency when receiving.
Basically it takes the place of the old BFO knob we used to use. The
sidetone is changed within the menu of most modern rigs such as the
TS-870-570-2000 etc.
Steve
N4LQ

----- Original Message -----
From: "Gary R." <[email protected]>
To: <[email protected]>
Cc: "Steve Ellington" <[email protected]>; "kenwood" <[email protected]>
Sent: Sunday, November 17, 2002 3:10 PM
Subject: Re: [Kenwood] TS-2000 PSK31 CW Filter use

> Can someone elaborate, what is the "sidetone frequency" talked about here?
What
> mode or modes is it applicable to? And, how is it identified and
controlled in
> most HF rigs?
> 73.
>
>
>
> Alan Wolke wrote:
>
> > Steve,
> >
> > Excellent - I knew that you'd find a way to use it with the TS-2000.
> >
> > For rigs without the menu 37 function of the TS-2000, the same method
can be
> > used with a simple workaround.  On the RX VFO (CW) you can either:
> >
> > 1) equalize the VFOs (A=B) and use the RIT to adjust the RX VFO up/down
> > (whichever necessary) by an amount equal to your sidetone frequency
> >
> > or
> >
> > 2) simply adjust the RX VFO up/down by the sidetone amount (if you can't
> > precisely set the RIT as in #1 above).
> >
> > Works great on my TS-870, and friends have reported similar excellent
results
> > with the TS-570.
> >
> > 73, Alan
> > W2AEW
> >
> > Steve Ellington wrote:
> >
> > > I have found two methods for using the excellent CW filters for PSK31
in the
> > > TS-2000. This will work only in the TS-2000 and not in the TS-870.
> > >
> > > The first and most important step for both methods is to enter into
menu 37
> > > and select "ON". This will allow you to switch between CW and SSB
modes
> > > without returning the VFO. Note: Don't be concerned that your
frequency
> > > readout changes between modes. This is the beauty of menu 37!
> > >
> > > Method one is rather crude but you can simply switch to SSB mode
before
> > > transmitting and back to CW when receiving. Obviously, this will allow
the
> > > use of the cw filters.
> > > When receiving in CW mode, observe your software's receive frequency,
RX in
> > > Digipan. This will tell you where to set your "SHIFT" control. You
should
> > > tune the receiver so that the RX frequencies fall between the two
extremes
> > > of the variable passband, 400hz to 1000hz. Example: If the software RX
> > > indicates 888.3hz, set the SHIFT for 900hz. Now you can adjust the
WIDTH
> > > down to 50hz.
> > > While you're at it, take advantage of the N.R. feature. This further
> > > enhances PSK receptions.
> > >
> > > You probably don't want to be changing modes every time you transmit
so
> > > here's how to work around that:
> > >
> > > Tune your VFO to the center of the PSK frequencies on the chosen band.
> > >
> > > Push the SPLIT button.
> > >
> > > Push A=B
> > >
> > > Using the A/B button, select VFO A.
> > >
> > > Select CW mode (This will become your receiving VFO.
> > >
> > > Push A/B changing to VFO B
> > >
> > > Select USB mode.
> > >
> > > Note: You may have to push DISP to force display of modes.
> > >
> > > This, VFO-B will become your transmit VFO.
> > >
> > > Push A/B for VFO A and you are ready to go. Do not touch the VFO knob
unless
> > > you want to reposition yourself within the band. If you must do this,
be
> > > sure to push A=B again. Doing this will put both VFO's on the same
> > > frequency. However, the modes will also become equal so you must
reprogram
> > > the VFOs for the proper mode.
> > >
> > > Tune with your software. If a station does not fall within the
> > > aforementioned passband, you can either reposition your VFO, keep your
cw
> > > filter open wide or change VFO A to SSB mode and use the LO/HI cut
slope
> > > filter adjustment.
> > >
> > > I hope this helps someone. Thanks to the few that replied to my
original
> > > question about this. Your suggestions helped. Hopefully the
manufactures
> > > will come to realize the importance of using narrow filters for afsk
or some
> > > genius will write a firmware upgrade for these fine rigs. 73
> > >
> > > Steve
> > > N4LQ
> > >
> > > - - -
> > >
> > > Your moderator for this list is:
> > > Larry Wilson KE1HZ [email protected]
> > >
> > > _______________________________________________
> > > Kenwood mailing list
> > > [email protected]
> > > http://mailman.qth.net/mailman/listinfo/kenwood
> >
> > --
> > Alan Wolke, W2AEW
> > "i usta cuDn't speL enjinere, noW i ar wuN"
> >
> > - - -
> >
> > Your moderator for this list is:
> > Larry Wilson KE1HZ [email protected]
> >
> > _______________________________________________
> > Kenwood mailing list
> > [email protected]
> > http://mailman.qth.net/mailman/listinfo/kenwood
>
>
>