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Date: Sun, 26 Nov 2006 22:41:48 +0100
From: Wolf DL4YHF <dl4yhf@freenet.de>
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Subject: Re: LF: Spectrum Lab
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Hi J & group,

I have prepared two configurations for you, and a step-by-step procedure 
to "install" them:

To configure SpecLab for QRSS60 / DFCW60 :

- install the latest version from
  http://people.freenet.de/dl4yhf/spectra1.html ,
 or try this direct link to the file:
  http://www.ssl7.com/dl4yhf/speclab/install_speclab_061126.zip


For "normal" DFCW/QRSS (the simple ones without J's divide-by-200 ):

- start SpecLab

- Configure your RX/TX switching hardware:
   "Options".."System Settings".."RX/TX Interface" .
  For example, select "COM2" and "PTT Control:RTS"

- In the main menu, select
      "Quick Settings" ..
     .. "Slow Morse RECEPTION"
       .. "Slow CW, 30 sec/dot" (etc)

- The program now asks for the AUDIO center frequency,
  enter something like 1000 Hz (depending on your RX).

- Click "Yes" when the program asks
   "Also configure the digimode terminal to TRANSMIT
    QRSS / DFCW ?"

- On the next screen, check "DCFW" (or uncheck for QRSS),
  set "soft amplitude transitions" if you have a "linear" TX,
  and set "beacon mode" if you want an endless transmission,

- Now the digimode terminal opens up; enter the text to send
  in the "Transmit" window, add at least one space at the end
  for beacon mode (to have a gap there) .

- Press F10 to start transmission
   (or click RX/TX switch until the LED turns red)
  (Note: it may take one symbol time until the transmission
   actually starts, so be patient with QRSS/DFCW60 ! )

That's all for the basic settings !

   -...-    -...-

These "special" settings for VY1JA are not contained in the SpecLab 
archive,
you can download them separately from here:

  http://people.freenet.de/dl4yhf/speclab/vy1ja.zip

How to "install" these settings:
After downloading, unzip the *.USR files into the
'configurations' subdirectory. If you installed SL
into the default directory, that would be:
     c:\Spectrum\configurations\VY1JA_QRSS30.USR
 and c:\Spectrum\configurations\VY1JA_QRSS60.USR .

Then start SL again. In the main menu, select
  "Quick Settings"..
  .."Load and Create user defined settings"
    .."Import"..
 and select VY1JA_QRSS30.USR (which in fact is DFCW 30sec/dot)
        or  VY1JA_QRSS60.USR (which in fact is DFCW 60sec/dot) .
 These settings have an audio center frequency of 1000 Hz
  and a DWCF shift 200-times larger than "normal", to be used
  in J's frequency-dividing exciter.
 The frequency shift can be modifed anytime as follows:
  - In the terminal window(!), select
    "Settings".."Digimode Configuration". The amount of shift
    between DFCW-"dots" (=lower frequency) and "dashes"(higher freq)
    can be entered in the field labelled "Frequency shift or span".
Furthermore, these special settings use the internal VOX  to key the 
transmitter (kind of full-BK mode), so the TRX will switch back from TX 
to RX while there is no audio sent to the soundcard.
If the switching relays make too much noise, disable the VOX-circuit in 
SL's circuit window:
- From the main window(!), select "View/Windows" / "Spectrum Lab 
Components" .
   The VOX is the small box near the "PTT" block.
   To turn the VOX of, click into the source connector,
   and set the source signal to "none". The PTT will then
   be controlled entirely by the terminal, which keeps the PTT
   output "on" as long as the terminal wants to send data.

If you don't get this to work properly, and/or Rick's easier-to-use QRSS 
doesn't work for your special application, please let me know.
As mentioned earlier, I have never tried QRSS60 / DFCW60 myself (with 
any program) ... ;-)

Best regards,
  Wolf DL4YHF .

 .-.-.
 

J. Allen schrieb:
> Hello again, All,
>
> Spectrum Lab apparently will have a very large learning curve toward 
> success for me.  Success means to use the software to key the PTT on 
> the RTS line for DFCW transmissions, and to shift the AF by 40 Hz. up 
> for dah and back down for dit.  The 40 Hz. shift is necessary because 
> a divide by 200 is used between the TS450 transceiver which acts as 
> the VFO and the 137 kHz. output which drives the amp.
>
> Is there s quick primer on someone's site which shows how to set up 
> DFCW only?
>
> Thanks,
>
> J.
>
>
>
>