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<br />. <br /> <br />. <br /> <br />. <br /> <br />003;)38 <br /> <br />The Model 5252 can also be pre-programed to selectively retransmit data <br />messages. A list of valid remote station identification numbers can be <br />programed into the repeater. Only data messages from these stations will be <br />retransmitted. This allows the data network manager to have even greater <br />control over the number and type of messages to be retransmitted. <br /> <br />Repeater status messages are periodically transmitted by the 5252. At <br />preprogramed intervals, the 5252 checks the status of its battery and sends <br />a message to the base station. The 5252 also sends a message indicating the <br />total amount of radio traffic of all types (e.g. noise plus data) received. <br />These two parameters help the network manager detect potential <br />battery-related problems and potential radio interference problems at the <br />repeater site. <br /> <br />Model 5252 Specifications <br />Size' 8 in. dia. <br />Weight: 8.3 Ibs without battery <br />Antenna connector - Single Frequency: ENe Female <br />Two Frequency. Rec' PL259 Female <br />Xmit, BNC Female <br />Battery charger connector: 5 Pin MS Female <br />Power: 12 VDC 5 ampere transmission <br />55 milliamp " standby <br />Trickle charge with solar panel or 12 VDC <br /> <br />RECEIVER, <br />Frequency range' <br />Frequency stability: <br />Sensitivity <br />Spurious response: <br />Adjacent channel rej <br />Noise squelch sensitivity: <br />Modulation acceptance: <br />Temperature range: <br />RF impedence: <br />FCC approved <br /> <br />TRANSMITTER' <br />Frequency range- <br />Power output~ <br />Frequency stability' <br />Audio distortion (max)- <br /> <br />Spurious and Harmonics: <br />FCC approved <br /> <br />VHF 135-174 MHz <br />+/.. 0.001% (--30 to 50 deg C) <br />0.25 microvolts <br />..80 db minimwn <br />,.80 db minimum (25 kHz ch.) <br />0.25 microvolts <br />+/.. 5 kHz nominal. +/- 7.5 kHz max. <br />--40 to 70 deg C <br />50 ohms nominal <br /> <br />VHF 135"174 MHz <br />Adjustable to 25 watts <br />+/- 0.0005% (-30 to 60 deg C) <br />6% at 60% rate system deviation with <br />1 kHz modulation <br />55 db below carrier <br />