TX7200 Instruction Manual Page 7
Low Transmit Power Setting: The transmitter
has both HIGH and LOW power settings. If you are only
operating over short distances, are in a reasonably high
location or are close to a local repeater, try using the LOW
transmit power setting. This reduces the transmitter power
from 5 Watts to 1 Watt, effectively tripling the ‘talk’
time available.
General: Continuously monitoring a busy channel will
reduce the battery life since incoming signals will keep the
receiver awake and the squelch will stay open for longer
periods of time. This will draw much more power from the
battery pack. If you are expecting to receive a Selcall on a
busy channel, program that channel for ‘Quiet’ operation
and select the Quiet mode. The TX7200 will then stay
‘asleep’ until your Selcall Ident is received.
SPECIFICATIONS
General
Compliance:
AS/NZS 4295
Frequency Range:
450 - 520 MHz
Number of Channels:
125
Channel Spacing:
25 kHz / 12.5 kHz
Operating Mode:
Simplex or half duplex .
Scanning Speed:
40 ms per channel (25 channels
per second)
Antenna Impedance:
50 Ohms nominal
Battery Voltage:
7.2 Volts DC nominal
Operating Voltage Range:
6 - 9 Volts DC
Low Battery Alarm:
6.2 Volts DC
Reverse Voltage Protection:
Shunt Diode
Operating Temperature:
-10° C to +60° C
Transmitter
RF Output:
High: 5 Watts
Low: 1 Watt
RF Switching Bandwidth:
70 MHz
Spurious Emission:
< - 30 dBm
Frequency Stability:
± 5 PPM
Modulation:
FM
Maximum Deviation:
< ± 5 kHz at + 20 dB Limiting
Transmit Frequency
Response:
+ 6dB per octave 300 Hz to
3 kHz, + 1, - 3 dB
Audio Signal to Noise:
> 45 dB.
Current Consumption (max):
1.8 Amps @ 5 Watts
0.8 Amps @ 1 Watt
Receiver
RF Switching Bandwidth:
70 MHz
Intermediate Frequencies:
1st: 21.4 MHz
2nd: 450 kHz
Sensitivity:
- 122 dBm for 12 dB SINAD.
Adjacent Channel
Selectivity:
70 dB
Intermodulation:
72 dB
Blocking:
95 dB
Spurious Rejection:
65 dB
Spurious Emission:
-80 dBm
Audio Output Power:
0.5 watts at <10% distortion.
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:
15 mA Sleep Mode
40 mA muted
190 mA Full Volume
Mechanical Specification & Connectors
Dimensions:
135mm (W) x 63mm (D)
x 40mm (H)
Weight:
390 grams
Antenna:
TNC Female
All values are typical unless otherwise stated and are
subject to change without notice or obligation.
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