Module mounting considerations
The modules may be mounted vertically or bent horizontal to the motherboard. Note that the four
components mounted on the underside of the RX1 are relatively fragile – avoid direct mechanical
contact between these and other parts of the equipment if possible, particularly in situations where
extreme mechanical stresses could routinely occur (as a result of equipment being dropped onto the
floor, etc).
Good RF layout practice should be observed. If the connection between module and antenna is more
than about 20mm long use 50Ω microstrip line or coax or a combination of both. It is desirable (but not
essential) to fill all unused PCB area around the module with ground plane.
Variants and ordering information
The TX1 transmitter and RX1 receiver are manufactured in the following variants as standard:
For alarm applications on 173.225MHz:
TX1-173.225-10
RX1-173.225-10
Transmitter
Receiver
For general applications on 173.250MHz:
TX1-173.250-10
RX1-173.250-10
Transmitter
Receiver
Other variants can be supplied to individual customer requirements at frequencies from 151.300MHz to 173.250MHz
and/or optimised for specific data speeds and formats. However these are subject to minimum order quantity (MOQ) and
long lead time. Please consult the Sales Department for further information.
Some of the non-standard frequencies readily availble. i.e. no MOQ or long lead time, are as follows:
Frequency (MHz)
121.500
151.300
152.175
152.500
152.575
152.650
153.812
161.975
162.025
164.525
173.175
173.200
Partnumber
Type approval
Note 1, 2
TX1-121.500-10 / RX1-121.500-10
TX1-151.300-10 / RX1-151.300-10
TX1-152.175-10 / RX1-152.175-10
TX1-152.500-10 / RX1-152.500-10
TX1-152.575-10 / RX1-152.575-10
TX1-152.650-10 / RX1-152.650-10
TX1-152.812-10 / RX1-152.812-10
TX1-161.975-10 / RX1-161.975-10
TX1-162.025-10 / RX1-162.025-10
TX1-164.525-10 / RX1-164.525-10
TX1-173.175-10 / RX1-173.175-10
TX1-173.200-10 / RX1-173.200-10
Yes, Note 2
Yes, Note 2
Yes, Note 2
Yes, Note 2
Yes, Note 2
Yes, Note 2
Yes, Note 2
Yes, Note 2
Yes, Note 2
Yes, Note 2
Yes, Note 2
Note
1: NOT approved to ETSI standards
2: For specialised application, NOT for general purpose
e.g: 121.500MHz is an international distress frequency
Radiometrix Ltd., TX1 & RX1 Data Sheet
page 14
RADIOMETRIX [ RADIOMETRIX LTD ]
