Narrowband transmitter is frequency programmable
Providing true narrowband FM performance, the NTX2B transmitter has been released by Radiometrix. The transmitter is available on user/factory programmable custom frequencies between 425 and 470MHz. Featuring a VCTCXO reference, the device offers greater stability and improved performance than the company's preceding transmitter, the NTX2.
Via microcontroller UART, users can re-program the transmitter to other channel frequencies in the band or store new frequency/power settings on EEPROM. On 434.075 and 434.650MHz European SRD frequencies, the 25kHz NTX2B operates at 10mW, while on the 458.700MHz UK frequency the transmitter operates at 25mW. For licensed US FCC Part 90 or legacy European Telemetry/Telecommand bands the device is available with 12.5 or 20kHz channel spacing.
Operation from 2.9 to 15V at a nominal current consumption of 18mA and less than 3uA in power-down mode is enabled by an internal LDO voltage regulator. This can be enabled within 5ms. Both digital and 3V pk-pk analogue signals can be transmitted by the NTX2B.
For a usable range of over 500m, the transmitter can be paired with the NRX2B receiver. This pairing is particularly useful for performance critical low-power wireless applications including security, sensor networks, industrial/commercial telemetry and remote control.
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