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 .
