| The
special HX1 transmitter modules offer a 300mW
RF output VHF data link in Radiometrix SIL standard
pin-out and footprint. This makes the HX1 ideally
suited to those low power applications where existing
narrow band and wideband transmitters provide
insufficient range. Together with the matching
RX1 or BiM1R receiver a one-way radio data link
can be achieved over a distance up to 10km+ with
suitable choice of data rate and antennas. |
Figure 1: HX1-169.4125-3-5V |
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Features
- Standard frequency:169MHz band
- Other frequencies from 120MHz
to 180MHz
- Data rates up to 3kbps for standard
module
- Usable range over 10km
- Fully screened
- Low power requirements
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| The HX1 is a narrow
band radio transmitter module for use in long range
data transfer applications at ranges up to 10kilometres.
HX1 transmitter circuit is the BiM1T transmitter circuit
in the TX1 pin-out with slightly enlarged dimension
to accommodate extra Power Amplifier circuit to produce
300mW RF output and available for operation on 169MHz
European licence exempt frequency band. |
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Applications
- · Tracing and asset tracking systems
- · Meter reading systems
- · Industrial telemetry and telecommand
- · Data loggers
- · In-building environmental monitoring
and control
- · Social alarms
- · High-end security and fire alarms
- · DGPS systems
- · Vehicle data up/download
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Technical Summary
- Transmit power: 300mW (24.7dBm)
nominal
- Operating frequency: 169.4125MHz,
169.5625MHz
- Supply range: 5V regulated
- Current consumption: 140mA nominal
transmit
- Data bit rate: 3kbps max.
- Size: 43 x 15 x 5mm
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Evaluation Platform: Universal
Evaluation kit or Narrow
Band Evaluation Kit
Matching Receiver:
NRX1-169.4125-10
or RX1-169.4125-10
or CVR1-169.4125-10 |
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User interface
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Figure 2: HX1 pin-out and dimension
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| TX1H pin |
Name |
Function |
| 1, 3 |
RF GND |
RF Ground |
| 2 |
RF out |
50W
RF output to the antenna |
| 4 |
EN |
Pull high to enable
Transmitter |
| 5 |
Vcc |
5V regulated supply |
| 6 |
0V
|
Ground |
| 7 |
TXD |
DC coupled input
for 5V CMOS logic. Rin = 100kW |
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Note:
Pinout and footprint as TX1. (but PCB is longer) |
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Performance specifications
Absoule
maximum ratings
Operating temperature: -10°C to +60°C
Storage temperature: -30°C to +70°C
(Vcc = 5.0V / temperature = 20°C
unless stated)
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| General |
pin |
min. |
typ. |
max. |
units |
notes |
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| DC supply
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| Supply
voltage |
4
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-
|
5
|
-
|
V
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| TX Supply current |
4
|
-
|
140
|
-
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mA
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| RF |
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| RF power output |
2
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+23.7
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+24.7
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+25.7
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dBm
|
1
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| Spurious emissions |
2
|
-
|
-40
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-
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dBm
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| Adja. channel
TX power |
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-37
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dBm
|
2
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| Frequency accuracy |
|
- 2.5
|
0
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+2.5
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kHz
|
3
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| FM deviation (peak) |
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±2.5
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±3.0
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±3.5
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kHz
|
4
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| RF centre frequency |
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-
|
169.4125
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-
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MHz
|
5
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|
-
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169.5625
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-
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MHz
|
5
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| Channel spacing
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|
-
|
25
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-
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kHz
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| Number of channels |
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|
1
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| Antenna pin impedance |
2
|
-
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50
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-
|
W
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| Baseband |
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| Modulation bandwidth
@ -3dB |
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0
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-
|
3
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kHz
|
6
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| Modulation distortion
(THD) |
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TBA
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|
%
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| TXD input level
(logic low) |
6
|
-
|
0
|
-
|
V
|
7
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| TXD input level
(logic high) |
6
|
-
|
5.0
|
-
|
V
|
7
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| Dynamic timing |
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| TX select to full
RF |
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-
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5
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-
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ms
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Notes:
1. Measured into 50W resistive
load
2. For 1kbps Manchester encoded; the data bit rate is
limited to 3kbps NRZ max. to meet adjacent channel power
specification.
3. Total over full supply and temperature range
4. With 0V - 5.0V modulation input
5. Other VHF 120-180MHz by special order
6. 5V CMOS compatible
7. To achieve specified FM deviation |
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| Breaching any of these conditions
will invalidate type approval |
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Limitation of liability
The information furnished by Radiometrix
Ltd is believed to be accurate and reliable. Radiometrix
Ltd reserves the right to make changes or improvements
in the design, specification or manufacture of its
subassembly products without notice. Radiometrix Ltd
does not assume any liability arising from the application
or use of any product or circuit described herein,
nor for any infringements of patents or other rights
of third parties which may result from the use of
its products. This data sheet neither states nor implies
warranty of any kind, including fitness for any particular
application. These radio devices may be subject to
radio interference and may not function as intended
if interference is present. We do NOT recommend their
use for life critical applications.
The Intrastat commodity code for all our modules is:
8542 6000.
R&TTE Directive
After 7 April 2001 the manufacturer
can only place finished product on the market under
the provisions of the R&TTE Directive. Equipment
within the scope of the R&TTE Directive may demonstrate
compliance to the essential requirements specified
in Article 3 of the Directive, as appropriate to the
particular equipment.
Further details are available on The Office of
Communications (Ofcom) web site:
Licensing
policy manual
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