[Kenwood] TS-2000 PSK31 CW Filter use

Sun, 17 Nov 2002 07:10:59 -0800

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]
> >
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>
> --
> Alan Wolke, W2AEW
> "i usta cuDn't speL enjinere, noW i ar wuN"
>
> - - -
>
> Your moderator for this list is:
> Larry Wilson KE1HZ [email protected]
>
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