NOTE: The RF300-series transceivers are still available for customers who already own RF300-series transceivers, but for newer radio customers, the RF320-series is usually a better choice. The RF302 is a DRL UHF radio transceiver for customers who will have an FCC-assigned frequency in the range of 450 to 470 MHz. It's programmed to an exact user-specified frequency by Campbell Scientific using special software.