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PERFORMANCE SPECIFICATIONS FOR
SPECTRA CONVENTIONAL 4 WATT AND 30 WATT RADIOS
GENERAL
Channel Capability 128 Conventional 900MHz frequencies (A4 Model)
128 Conventional 900MHz frequencies (A5 Model)
128 Conventional 900MHz frequencies (A7 Model)
Primary Power 12Vdc negative ground only
Dimensions 2.0" H x 7.1" W x 8.6" L
Weight 5.5 lbs.
Metering All adjustments and alignments are performed electronically using an IBM Personal
Computer, a Radio Interface Box (RIB) and Radio Service Software.
Environmental Meets MIL 810D environmental specifications for vibration, shock, rain, dust, and salt fog.
Maximum Battery Current Drain
Model Frequency Minimum RF Operation Standby @ Receiver @ Transmit @
(MHz) Power Output 13.8V 13.8V Rated Power
D37KMA7JA5_K TX: 896-902 RX: 935-941 30 watts +12Vdc .5A 2.5A 14.5A
935-941
D37KMA7JA7_K TX: 896-902 RX: 935-941 30 watts +12Vdc .5A 2.5A 14.5A
935-941
D37KMA7JA7_K TX: 896-902 RX: 935-941 4 watts +12Vdc .5A 2.5A 4.5A
935-941
D37KMA7JA4_K TX: 896-902 RX: 935-941 30 watts +12Vdc .5A 2.5A 14.5A
935-941
TRANSMITTER
Output Impedance 50 ohms
Spurious and Harmonic More than 70dB below carrier (for EIA spec. RS152B)
Emissions
Frequency Stability ±.00015% of assigned center frequency from –30°C to +60°C ambient (+25°C reference)
Modulation 10K0F1D, 11K0F2D, and 11K0F3E
Audio Sensitivity 0.080V ±3dB for 60% maximum deviation @1000Hz
Audio Response +1, –3dB of a 6dB/octave pre-emphasis characteristic from 300 to 3000Hz
Audio Distortion Less than 2% @ 1000Hz, 60% maximum deviation
Maximum Frequency 6MHz within each of two groups, 896-902 and 935-941MHz
Separation
FM Hum and Noise: –40dB
EIA Method
RECEIVER
Channel Spacing 12.5kHz
Sensitivity: (per EIA spec. RS204C)
20dB quieting .40µV
EIA SINAD .30µV
Selectivity: EIA SINAD –70dB @ ±12.5kHz; –80dB @ ±25kHz
Spurious & Image Rejection 90dB
Intermodulation: EIA SINAD –70dB @ ±12.5kHz; –80dB @ ±25kHz
Input Impedance 50 ohms
Audio Output 105dB SPL @ less than 3% distortion
Maximum Frequency Separation 6MHz
Frequency Stability ±.00015% of assigned center frequency from –30°C to +60°C ambient
(+25°C reference)
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
ALL MEASUREMENTS IN TEST MODE WITH HEARCLEAR DISABLED.
FCC TRANSCEIVER DESIGNATION
ABZ89FT5665 (30 watts) ABZ89FT5703 (4 watts)
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