GME TX4500WS - Manual (Page 30)

PA G E 3 0 I n s t r u c t I o n m A n uA l t X 4 5 0 0 s
SPECIFICATIONS
ELECTrICAL
general
compliant specification: meets As/nZs 4365 for
radio communications
equipment in the uhF
citizen and personal
radio service.
Frequency range tX: 476.425 –
477.4125 mhz
number of channels: 80
channel spacing: 12.5 khz
operation mode: simplex or half duplex
with repeater talk
around.
scanning speed: 25 ms per channel
(40 channels per
second).
Antenna Impedance: 50 ohms nominal
nominal Battery Voltage: 12 V Dc
operating Voltage range: 10-16 V Dc
Battery Polarity: negative earth
standard test Voltage: 13.8 volts Dc
overvoltage Protection: 25 volts Dc maximum.
At 18 V Dc the channel
display flashes ‘hi
Dc’ for 5 seconds on
receive. the rF power
is reduced and tX
flashes on transmit.
reverse Voltage
Protection: Diode crowbar
overcurrent Protection: In-line 2 amp fuse
operating temperature: -10°c to 60°c
Transmitter
rF output: 5 w
spurious Emission: < -70 dBc
Frequency Error: < ± 1.5 khz
modulation: Fm
maximum Deviation: < ± 2.5 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: 1.7 amps with 50
ohms termination.
Receiver
Intermediate Frequencies: 38.85 mhz, 450 khz
sensitivity: -122 dBm for 12 dB
sInAD unweighted
selectivity: -6 dB at + 3.5 khz
-60 dB at ± 12.5 khz
Intermodulation
Immunity: -72 dB
Blocking Immunity: -98 dB
spurious response
Immunity: 70 dB
Audio output Power: 3 w average into
4 ohms
Audio signal to noise: > 45 dB unweighted
receive Frequency
response: -6 dB/octave
de-emphasis 300 hz to
3 khz + 1-3 dB.
current consumption: < 175 mA muted
750 mA Full volume.
conducted spurious
Emission: < -70 dBm
MECHANICAL SPECS & CONNECTIONS
Dimensions: 50 (h) x 171 (l) x
112 (D) mm
weight: 646 grams
12 volt Power supply: two core 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 are subject to change without notice or obligation
46885-4_TX4500S_IM.indd 30 4/06/14 3:08 PM