Campbell RF401, Instruction Manual

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RF401-series and RF430-series Spread Spectrum Radio/Modems
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b. Install 9 dBd Yagi and position station so that offending transmitter is
located behind or to the side of the yagi to take advantage of yagi’s
front-to-back or front-to-side ratio (back and side signal rejection).
c. Change polarization (element orientation) of all yagi and collinear
antennas in your network to see if that reduces effects of offending
transmitter.
10. PC208W.dnd file is corrupted.
The remote possibility exists that this file has become corrupted in your
PC. After you create the Network Map in PC208W, you can back up
PC208W.dnd in case this should happen. If this appears likely, exit
PC208W and copy and paste your backup file over the suspect .dnd file to
restore proper operation.
11. Radio has wrong Network Address, Radio Address, Hopping Sequence,
or Standby Mode.
It is improbable that a radio that has been working would ever change
address, hopping sequence or other settings. However, check the settings
for the unlikely event this may have happened. Try “Restore Defaults”
and set up the radio again from that point.