Low power modules

LPRS has launched the latest narrowband radio modules from Circuit Design.

The ultra-compact transmitter CDP-TX-05M-R and receiver CDP-RX-05M-R supersede the CDP-TX-04S-R and CDP-RX-03AS/BS-R while maintaining their low power consumption of 10 mW with multi-channel operation.

This allows the user to ensure reliable wireless communication by on-site selection to a channel that is not affected by local interference.

The modules operate at 426 MHz for Japan, 434 MHz or 869 MHz for Europe, and 915 MHz for the USA and each may be switched between four pre-programmed channels. In addition the alternative frequencies can be customised.

The modules are supplied in a shielded enclosure and require a small number of external components to produce a complete system for industrial use.

They are both pin compatible with the existing CDP-TX-04S-R and CDP-RX-03AS-R modules.

High frequency stability is ensured by the use of a TCXO as the reference oscillator circuit and the operating temperature range has been increased to -20 to +65 °C.

With the output of 10 mW (1 mW in Japan, 0.5 mW in the US) authorised for narrow band FM and double superhet receivers with high receive sensitivity in the European harmonised ISM band, a communication range of 600 m (line-of-sight) is possible.

Other standard features include R&TTE (EN300220) & RoHS compliant, four RF channels with narrowband FM 25 kHz channel spacing, high sensitivity double superhet receiver -120 dBm sensitivity (434 MHz SINAD 12 dB).