The RF300-series are radio transceivers used in Campbell Scientific radiotelemetry networks. The following table shows the frequency ranges assigned to each model.
|RF300||VHF||150 to 174 MHz|
|RF301||VHF||132 to 150 MHz|
|RF302||UHF||450 to 470 MHz|
|RF303||UHF||403 to 419 MHz|
419 to 435 MHz
These transceivers meet NTIA narrowband and FCC re-farming requirements for transmission.
The RF304 is a Dataradio 3412 UHF radio transceiver that is programmed to an exact user-specified frequency by Campbell Scientific using special software.
Besides the radio, each field station and repeater station must also have an RF500M Radio Modem or RF95(A) Radio Modem; base stations need an RF500M radio modem, RF500B base station, or RF232(A) base station.
|Power Output||5 W (at 13.3 V nominal)|
|Channel Spacing||12.5/25 kHz|
|Operating Temperature||-30° to +60°C|
|Humidity||95% maximum RH at 40°C (non-condensing)|
|Dimensions||11.7 x 8.4 x 5.6 cm (4.6 x 3.3 x 2.2 in.)|
The RF304 is compatible with the RF500M radio modems, RF500B base stations, RF95(A) radio modems, RF232(A) base stations, E.F. Johnson-series radios, and P50-series radios. The RF304 is NOT compatible with the RF310M radio modem, RF310B Base Station, and RF310-series radios.
Number of FAQs related to RF304: 1
It is possible to connect two antennas to a single radio via a properly specified (operating frequency and power handling capability) two-way, 50 ohm RF power divider. One example of this type of power divider is offered by Pasternack. Note that using a device like this will induce additional losses into the system (3 to 4 dB, typically).