Synthesised Radio Modules
Specification
ABSOLUTE MAXIMUM RATINGS
Storage Temperature............................................... -30 to +85 Celsius
Operating Temperature ........................................... -25 to +55 Celsius
Dimensions
Length = 36mm
Width = 51mm
Height = 14.5mm
MIN
458.500
400.000
860.000
12.5
3.0
TYPICAL
TX8000/RX8000
ELECTRICAL CHARACTERISTICS
Frequency Range
Channels
Channel Separation
Start up Time
Modulation
TRANSMITTER
RF Output Power
Analogue Input
Digital Input
Power Supply
RECEIVER
Sensitivity
Analogue Output
Digital Output
Power Supply
MAX
485.950
490.000
930.000
25.0
7.0
DIMENSION
MHz
MHz
MHz
KHz
mSecs
NOTE
UK
World
World
Factory
1
25.0
5.0
F3D
5.0
3.5
7.2
270.0
0.5
4.7
8
290.0
500.0
5.0
10.0
390.0
mW
Vp-p
V
V
mAmps
mod.
TTL
-112
2.0
5.0
5.5V
15.0
dBm
Vp-p
V
V
mAmps
10dBSIN
AD
+/-5KHz
TTL
5.0
12.0
12
18.0
Note: Switch mode power supplies can produce RF frequencies that will interfere with the receiver signal.
PART No.
TX8000.XXX
RX8000.XXX
RADIO PROPAGATION
With any radio system there are a number of factors
which affect the system performance. These are:
Transmitter power output.
Height of transmitter and receiver antenna.
Length and type of coaxial feeder cable to the
antenna.
Type and efficiency of the antenna.
Topography between transmitter and receiver.
The weather.
DESCRIPTION
Transmitter XXX = RF Frequency Band
Receiver XXX = RF Frequency Band
ANTENNA
X603 Quarter Wave Antenna
Low cost, mobile, omni-directional, short range
approximately 2km
X604 Mast Mounted Dipole Antenna
Omni-directional, base station, range approximately
10km
X605 High Gain Yagi Antenna
Directional beam of 40°, range approximately
10-20km, usually used on receivers only.
DS8000-1
Dec 02
©2002
REG No 277 4001, England.
Page 2
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