MikroElektronika's MIKROE-2902 OOK (on off keying) RX/TC Click is a wireless receiver with a working frequency of 433 MHz (sub GHz). The device allows a simple low-speed wireless ad hoc communication network between the receiver and compatible transmitter. It has ASK (Amplitude Shift Keying)/OK demodulator, analog received signal strength indicator (RSSI) output, and integrated suppression function. OOK RX click uses MICRF230 IC, 400 MHz to 450 MHz ASK/OOK receiver, RSSI and squelch from Microchip.
Filter corner frequencies depending on jumper configuration are given in table:
The working principle of the device is to decode the information embedded in the radio signal. ASK/OOK modulation is a method of encoding information and combining it into radio signals, which can be transmitted and received wirelessly. OOK modulation is similar to ASK, but is of binary type. The presence of a carrier signal is recognized as logic 1, while no carrier signal is recognized as logic 0. Compared with ASK modulation, this method has stronger immunity to noise and interference, and allows a larger communication distance.
OOK RX click electrical specifications：
The MIKROE-2903 OOK TX clicker board uses MICRF114 IC, 285 MHz to 445 MHz low-power integrated RF transmitter from Microchip Technology. The working principle of the device is to encode the information and embed it into the radio signal. OOK modulation is a method of encoding information and combining it into radio signals, which can be transmitted and received wirelessly. The transmission signal of OOK TX click is generated by the internal synthesizer of MICRF114 chip, which operates at a single frequency. The basic frequency of the external oscillator is 13.56 MHz, so the RF signal frequency is 433.95 MHz, which perfectly matches the OOK RX click. It works at the same frequency. The MICRF114 integrated circuit has only one RF output pin, which can easily match the onboard monopole PCB tracking antenna.
Onboard settings and indicators：
MIKROE-2903 and MIKROE-2902 transceivers and receivers can be used for remote low-speed communication applications, such as remote keyless access, remote fan or light control, garage or gate control, and any other applications involving one-way low data rate wireless connectivity.
