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PC CONTROL
PC-Control from Timestep PROsat software: Frequencies are assigned in the Auto Schedule
Options dialog box (right click into the tracking window). The list of available frequency
channels there contains two unassigned channles A and B. These are used for the new NOAA-
18 frequencies: select "A" for 137,100 and "B" for 137,9125 MHz. Don't forget to save your
settings by saving the associated tracking window and configuration.
Automatic frequency selection is also supported by the "WxToImg" software (ugraded
version only). Program configuration for this is in the "Options / Receive options" dialog box:
Select Receiver WRX-137 and Baudrate 57600.
If other software is used, which does not support automatic frequency selection, set the
WRX-137 into the AutoScanMode for automatic, unattended image reception.
The supplied program "WRX137.EXE" allows to modify the frequency and mode from a
Windows dialog box.
CONTRAST / BRIGHTNESS CONTROL (applies only for PROsat and JVComm)
When using the internal APT decoder and serial data output with PROsat or JVComm
software there is no need to do any contrast or brightness adjustments. All levels are internally
set by hardware for optimum image quality. Contrast enhancements and other image
processing can be done later by software. However, if any need occurs to slightly change these
hardware settings, there are two screwdriver operated controls available through the front
panel. Use the supplied "Spectrum" software to find the optimum settings. Note that data
transfer into PROsat or JVComm is interrupted as long as "Spectrum" is active (the serial port
can only be assigned to one program at a time).
Important note: The PROsat software provides several "level adjustment" controls and
functions. These were provided from Timestep for their old special hardware and are without
any function with the WRX-137 receiver.
Level adjustment for soundcard software. If soundcard software (WXtoIMG) shall be used,
connect the sound input of the computer to the "AF OUT" socket on the rear of the WRX-
137. The output level can be adjusted with the screwdriver operated control assigned
"LEVEL +/-" Note that this control does not affect image data going out through the serial
port. It is possible to receive images at the same time with different software programs
throught the AF OUT and the serial data output.
SYNC MODES
(applies only for PROsat / JVComm serial data, not for soundcard software):
The "Sync"-switch has 3 positions: "Int.", "aut.", "Phase".
For best results with the PROsat software keep this switch always in the middle position
("aut.") and set the synchronisation mode in the software to "Start Only". Note that this
setting has to be done individually for each satellite in the "Auto Schedule Options" dialog
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