Narrowband transceiver offers 128 channels
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Radiometrix product story
Edited by the Electronicstalk editorial team
Apr 8, 2008
General purpose VHF transceiver module covers any 3MHz switching bandwidth specified in the frequency range of 135-175MHz.
Incorporating automatic noise squelch and a 1200baud modem, the TR1M 128-channel 12.5/25kHz narrowband FM transceiver module is the latest release from Radiometrix.
It is intended as a general purpose VHF unit covering any 3MHz switching bandwidth specified in the frequency range of 135-175MHz and is capable of supporting datarates up to 5Kbit/s over distances up to 1km.
The synthesiser-based module shares a common pinout and features with the company's popular UHF TR2M product offering.
Like the TR2M, it offers RF designers an analogue and digital interface with a transmit power of +20dBm (100mW) and a receiver sensitivity of -118dBm (for 12dB SINAD).
The TR1M can be powered from any supply between 4.5 and 16V, with a low current consumption of 110mA for the transmitter (100mW output) and 27mA for the receiver.
The module is fully compliant with both ETSI EN300 220-3 and EN301 489-3 standards, and has an operating temperature range between -20 and +60C.
It is suitable for use in handheld terminals, heavy vehicle/machine remote controls, environmental monitoring, data loggers, industrial telemetry/telecommand and high-end security/fire alarm designs.
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