INSTALLATION AND MAINTENANCE MANUAL
E1 FAMILY
LICENSED & SPREAD SPECTRUM RADIOS
JUNE 2001
SECTION 2: PRODUCT DESCRIPTION PAGE 3-47
3.8 Antenna Connection
The Lynx radio is equipped with an N-type female connector at the antenna port located on the rear
panel. A short length (~6 feet) jumper cable such as RG-214 coax (or “pigtail”) fitted with two N-type
male connectors can be used to connect the antenna port to the antenna transmission line (see
Section 3.9). The recommended cable type for a jumper is RG-214.
A low loss 50-ohm cable (for example LDF4-50 1/2 inch coax) or EW-52 waveguide (for 5.8 GHz
radios) is recommended for the antenna transmission line between the top of the rack and the
antenna. The return loss presented by the transmission line at the top of the rack should be as high
as possible (20 dB, minimum recommended). The length of the antenna transmission line should be
kept as short as possible (to minimize losses).
For 5.8 GHz radios, to minimize feeder losses, the use of 5.8 GHz elliptical waveguide is
recommended (typical loss is 1.25 dB/100 ft) for feeder lengths in excess of 200 feet. Depending on
path length and feeder length, 1/2 inch coax cable can be used with 5.8 GHz radios.
For the Lynx radios, 1/2” or 5/8” coaxial cable (LDF4-50 or
LDF4.5-50) is recommended. Coaxial cable 7/8” or larger can
exhibit moding at 5.8 GHz and is not recommended for 5.8 GHz
radios. For waveguide transmission line at 5.8 GHz, EW-52
waveguide is recommended. EW-63 will also work, but may
exhibit more loss.
Do not use right angle N-type connectors with the 5.8 GHz Lynx
radios: they may present high loss at 5.8 GHz. Do not use a low
quality N-type jumper cable with the Lynx. Some cable types,
such as RG-8, may have high loss at 5.8 GHz.
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