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SPECIFICATIONS
Channels: 40 AM
Frequency Range: 26.965 to 27.405 MHz
Frequency Control: Phase Locked Loop (PLL) synthesizer
Frequency Tolerance: ±0.005%
Operating Temperature: -30ºC to +50ºC
Microphone: Plug in type: dynamic
Input Voltage: 13.8 V DC nom. (+ or - ground)
Current Drain: TX: full mod., 1.7A
RX: with max. audio output, 1.7A
Size: 4-1/2” W x 6-3/4” D x 1-3/8” H
Weight: 1 lb. 10 oz.
Antenna Connector: UHF, SO-239
LED Meter: Indicates relative RF output and received
signal strength
TRANSMITTER
Power Output: 4 Watts
Modulation: Class B amplitude modulation
Freq. Response: 300-2500 Hz
Output Impedance: 50 ohms, unbalanced
RECEIVER
Sensitivity: 0.5µV for 10 dB; (S + N) /N typical (limit: 1.0µV)
Selectivity: 6 dB @ 7kHz, 70 dB @ 10kHz typical
Image Rejection: 80 dB typical
I.F. Frequency: Double Conversion Superheterodyne
1st 10.692 MHz
2nd 450 kHz
RF Gain Control: Adjustable for optimum reception
Automatic Gain Control: (AGC): less than 10dB change in audio output for
inputs from 10 to 50,000 microvolts
Squelch: Adjustable; threshold less than1µV
Audio Output Power: 7 watts max. into 8 ohms
Freq. Response: 300 to 2000 Hz
Distortion: less than 10% at 4 watts, 1000Hz
Internal Speaker: 16 ohms, 3 watts round
External Speaker: (not supplied) 8 ohms
PA System: 7 watts in external 8 ohm speaker
Specifications and features are subject to change without notice.
PRO520 om.qxd 11/11/99 12:52 PM Page 9