GME TX4400 - Specifications

PAGE 22 INSTRUCTION MANUAL TX4400
GENERAL
Compliance: Compliant with AS/NZS 4365
for radio communications
equipment in the UHF citizen
band and personal radio service.
Frequency Range: 476.425 MHz - 477.400 MHz
Number of Channels: 40 (plus 20 receive only)
Frequency Range
(receive only): 465 MHz - 485 MHz
Channel Spacing: 25 kHz
Operating Mode: Simplex or half duplex with
repeater talk-around.
Scanning Speed: 100 ms per channel (10
channels per second)
Antenna Impedance: 50 Ohms nominal
Nominal Battery
Voltage: 12 V DC
Operating Voltage
Range: 10 to 16 V DC
Standard Test Voltage: 13.8 V DC
Battery Polarity: Negative Earth
Overvoltage
Protection: 30 V DC maximum - At 18 V DC
the RF power is reduced and
the channel display flashes
‘Hi DC’ on receive.
Reverse Voltage
Protection: Diode Crowbar
Overcurrent protection: In-line 2 Amp fuse
Operating Temperature: -10° C to 60° C
TRANSMITTER
RF Output: 5 Watts
Spurious Emission: < - 70 dBc
Frequency Error: < ± 5 PPM
Modulation: FM
Maximum Deviation: < ± 5 kHz at + 20 dB AF
Limiting
Transmit Frequency
Response: + 6 dB per octave 300 Hz to 3
kHz, + 1, - 3 dB
Demodulated Audio
Signal to Noise: > 45 dB unweighted.
Current Consumption: 1.4 Amps with 50 Ohm
termination.
RECEIVER
RF Bandwidth: < 5 MHz
Intermediate
Frequencies: 21.4 MHz and 455 kHz
Sensitivity: - 123 dBm for 12 dB SINAD
unweighted.
Sensitivity of
Receive-only Channels: -107 dBm for 12 dB SINAD
Selectivity: - 6 dB ± 7.5 kHz
- 70 dB ± 25 kHz
Intermodulation
Immunity: 76 dB
Blocking Immunity: >100 dB
Spurious Response
Immunity: 70 dB
Audio Output Power: 3 Watts average into 4 Ohms.
Audio Signal to Noise: > 45 dB unweighted
Receiver Frequency
Response: - 6 dB per octave de-emphasis,
300 Hz to 3 kHz, + 1, - 3 dB.
Current Consumption: 210 mA muted.
600 mA Full Volume.
Conducted Spurious
Emission: < - 75 dBm
Squelch: Adjustable -125 dBm to
-109 dBm. Max. Hysteresis
6 dB typical.
MECHANICAL SPECIFICATION &
CONNECTIONS
Dimensions: 172 mm (W) x 95 mm (D) x
52 mm (H)
Weight: 626 grams
12 Volt Power Supply: Two core red and black cable
with bulkhead connector in rear
panel.
Antenna: SO239 panel socket
External Speaker: 3.5 mm Mono Jack
Microphone Port: 6 Way telephone style with
rubber strain relief.
SPECIFICATIONS