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Troubleshooting
Problem
Possible Solutions
The WXTrakConfig.exe program
cannot communicate with the
WXTrak. The config program
reports “WXTrak not found”.
Be sure to use a null-modem adapter.
Be sure WXTrak is powered.
Be sure to use the correct configuration program, WXTrakConfig.exe.
Test serial by running a terminal program, such as HyperTerm at 9600 or 2400
baud N81. When WXTrak is first powered up, it will send a version message. If it
doesn’t, serial output is not working. If it does, send ESC V, which will make it
send the version again. If it doesn’t, serial input is not working.
Try a different computer.
The WXTrakConfig program
reports “Cannot open COM port”
Be sure to use the correct COM port.
Be sure no other programs are also currently using the COM port.
The transmitter keys up, even
when no power is applied to
WXTrak
Perhaps the radio doesn’t key via current through the microphone line. If so,
resistor R8 should be removed.
Check for shorts or opens on the solder side of the PCB.
Check the radio manual. Perhaps a different value of R8 is needed.
The power LED D1 is not lit.
Check for 5V across LED D1.
Check for shorts or opens on the solder side of the PCB.
Be sure the LEDs are inserted in the proper direction.
Confirm the battery is fully charged, and delivering 7 – 35 volts.
The green and yellow LEDs do
not flash 3 times at powerup.
Be sure the LEDs are inserted in the proper direction.
Check for shorts or opens on the solder side of the PCB.
Check for 5 volts across socket pins 5 and 14 with the PIC removed.
WXTrak keys the transmitter,
sends a packet, but fails to un-
key the transmitter.
WXTrak is probably receiving too much local RF energy.
Lower transmitter power, move the transmitting antenna further away, or try
shielding the WXTrak in a metal case.
Try re-configuring the settings.
Sent packets sound distorted on
a receiver.
Be sure the calibration value is around 128.
Be sure there is not too much RF energy near the WXTrak.
Sent packets are not being
decoded by a receiver (TNC,
digipeater, etc)
Make sure your TXD time is high enough. Start it high (500 ms) and lower it as
long as it keeps working. 250ms – 300ms is a good setting.
Make sure the transmitted audio level is correct. It should be near, or just below,
other transmitters received. Adjust with R6
Try slightly different calibration values.
Try re-configuring the settings.
No audio is heard on a receiver.
Check for shorts or opens on the solder side of the PCB.
Raise transmit audio level with R6.
If R6 doesn’t give enough range, try lowering the value of R5, or even shorting it.
WXTrak is stuck in transmit
mode, or transmitting too often,
and it cannot be re-configured.
Rotate R9 to the extreme so the WXTrak will think there is a carrier. Then cycle
power, and it should not transmit. It should then be able to be configured.
WXTrak never transmits.
Be sure the yellow LED is off. Adjust R9 if necessary.
Check for shorts or opens on the solder side of the PCB.
Be sure the cable is built correctly. Grounding PTT should make the radio
transmit.
