Antennas
Antenna Kits and Accessories
396 SSU-2000 User’s Guide 12713020-002-2 Revision D – April 2004
Transient Eliminators
Symmetricom offers the FCC-250B-90-1.5NFNF Transient Eliminator for
installations that require antenna coaxial lead-in protection. The FCC-250B-
90-1.5NFNF 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. Table
C-6 provides the transient eliminator specifications.
GPS L1 Inline Amplifier
The GPS L1 Inline Amplifier (item number 570704-0001) option used to boost the
signal from the antenna for installation. The amplifier uses LMR-400 cables longer
than 650 feet and receives power from the GPS radio receiver through the antenna
coaxial cable connections. Table C-7 provides environmental, mechanical, and
electrical specifications for the amplifier.
Table C-6. FCC-250B-90-1.5NFNF Specifications
Characteristic Specification
Type Gas
Response Time < 2 nanoseconds
Impedance 50 Ω
Insertion Loss < 0.25dB @ 1,575 MHz
VSWR < 1.6:1 @ 1,575 MHz
DC Breakdown Voltage 90 Volts
Dissipation Capacity 10,000 Amperes, impulse 8/20 µsec
Connector Type N-Type
Temperature –55° C to + 70°C
Relative Humidity 100% Non-immersed Altitude 200 ft. (60 m) below sea level
to 13,000 ft. (3962 m) above sea level
Table C-7. GPS L1 Inline Amplifier Specifications
Characteristic Specification
Environmental
Temperature –40° C to +80° C
To Next Page
Loading...
Need help?
General
