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BTR-300 BASE STATION TRANSCEIVER
TECHNICAL INFORMATION
-3-
SPECIFICATIONS BTR-300
Input Power (minimum)....................................................................................12V AC/DC at 360 mA
Intercom Output ........330 mV (Low) or 1 V (Hi) RMS into 300 ohm load typical (at rated deviation)
Intercom Input (Gain Minimum) .........................................300 mV RMS typical (for rated deviation)
Auxiliary Output.............................................2 V RMS into 600 ohm load typical (at rated deviation)
Auxiliary Input (Gain Maximum) .........................................60 mV RMS typical (for rated deviation)
Local Headset Input.......................................................................................2 mV RMS input nominal
1.5 mV RMS input at compression (Dynamic)
Local Headset Output .............................................................32 mV maximum output into 600 ohmst
Speaker/Local Monitor Output (into 8 Ohms) ............................................2 Watts (at rated deviation)
Temperature Range ................................................................................-4°F to 130°F (-20°C to 55°C)
Dimensions.............................................................................................15.75” W x 1.75” H x 10.5” D
(40 cm x 4.5 cm x 26 cm)
Weight................................................................................................................................4.5 lbs (2 kg)
Transmit
RF Frequency Range ........................................................................................................150-216 MHz
RF Frequency Stability................................................................................Crystal Controlled, 0.005%
RF Power Output............................................................................................................50 mW Typical
Modulation...........................................................................................................FM, 3 KHz deviation.
115 micro-seconds Pre-emphasis
Transmit Antenna....................................................................................................5/8-wave (supplied)
SO239 connector on chassis
Modulation Limiter ................................................................................................Internal Compressor
Modulation Frequency Range ............................................................................300 to 5000 Hz ±2 dB
Radiated Harmonics and Spurious Emissions..........................................................................-45 dBC,
Exceeds FCC Specifications
FCC ............................................................................................Type Accepted Under Parts 90 and 74