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Chapter C
Antenna Kits and Accessories
Transient Eliminators
Symmetricom offers the 58539A transient eliminator for installations that require
antenna coaxial lead-in protection. The 58539A transient eliminator passes DC
power and frequencies in the 1.5 GHz range with non-downconverter L1 GPS
antennas. In most installations, the transient eliminator mounts near the point at
which the antenna lead enters the facility.
eliminator specifications.
Table C-4. FCC-250B-90-1.5NFNF Specifications
Characteristic
Type
Response Time
Impedance
Insertion Loss
VSWR
DC Breakdown Voltage
Dissipation Capacity
Connector Type
Temperature
Relative Humidity
Altitude
GPS L1 Inline Amplifier
The GPS L1 Inline Amplifier (58529A) option boosts the signal from the antenna.
Use this amplifier on LMR-400 cables that are longer than 650 feet; it receives
power from the GPS radio receiver through the antenna coaxial cable connections.
Table C-5
provides mechanical and electrical specifications for the amplifier.
Table C-5. GPS L1 Inline Amplifier Specifications
Characteristic
Connectors, (In/Out)
Gain
110 TimeProvider 100 User's Guide
Table C-4
Specification
Gas
< 2 nanoseconds
50
< 0.5dB @ 1,575 MHz
< 1.2:1 @ 1,575 MHz
40 Volts
25,000 Amperes, impulse 8/20 µsec
N-Type
–55 C to + 85 C
100% Non-immersed
200 ft. (60 m) below sea level to 13 000 ft. (3962 m) above
sea level
Mechanical
N-Type
20 dB 2 dB
provides the transient
Specification
098-00106-000 Revision A – March, 2009
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