User Manual

INSTALLATION AND MAINTENANCE MANUAL
LYNX.sc E1 FAMILY
SPREAD SPECTRUM RADIOS
OCTOBER 1998
PAGE 3-24 SECTION 3: INSTALLATION & ADJUSTMENTS
in Section 3.3.3. During anomalous propagation conditions, the RSL may fade but will not
increase up more than 10 dB (except in unusual very long paths which may fade up by 15 dB).
Antenna alignment should enable the RSL to be peaked to the
level calculated in the link budget. If the RSL is peaked but is
approximately 20 dB below the calculated level, then it is likely
that the antennas are aligned on a sidelobe of the antenna's
radiated signal. In this case, the antennas should be rotated in a
wide arc until the main lobe is located. (Other possible causes of
low RSL are path obstructions, loss in connectors, adapters and
pigtail jumper cables or different antenna polarization at each end
of the link.)
Figure 3-10: Typical RSL Voltage versus Received Signal Level (RSL)