Long-distance option for communication
Overview
The RF321 is a 400.5 to 416.5 MHz radio. Campbell Scientific’s RF320-series narrowband UHF/VHF radio transceivers provide a long-distance telemetry option for communicating with remote measurement stations. Each radio includes a configured Ritron DTX-L radio, a mounting bracket, and a cable for connecting the radio to a radio modem. The different models vary by the frequency ranges they support.
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Detailed Description
The RF321 is programmed by Campbell Scientific to the frequency that was assigned by the Federal Communications Commission (FCC). This frequency must be specified at time of order so that it can be programmed into the radio.
A user-supplied antenna is required for each radio; contact Campbell Scientific for more information about selecting the antenna and cable. Each radio must also be connected to an RF500M or RF310M radio modem.
Compatibility
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
Dataloggers
| Product | Compatible | Note |
|---|---|---|
| 21X (retired) | This data logger is only compatible if the RF500M radio modem is used. | |
| CR10 (retired) | This data logger is only compatible if the RF500M radio modem is used. | |
| CR1000 (retired) | This data logger is only compatible if the RF500M radio modem is used. | |
| CR1000X (retired) | This data logger is only compatible if the RF500M radio modem is used. | |
| CR10X (retired) | This data logger is only compatible if the RF500M radio modem is used. | |
| CR200X (retired) | The CR200X-series dataloggers are only compatible if the RF500M radio modem is used. | |
| CR206X (retired) | The CR200X-series dataloggers are only compatible if the RF500M radio modem is used. | |
| CR211X (retired) | The CR200X-series dataloggers are only compatible if the RF500M radio modem is used. | |
| CR216X (retired) | The CR200X-series dataloggers are only compatible if the RF500M radio modem is used. | |
| CR23X (retired) | This data logger is only compatible if the RF500M radio modem is used. | |
| CR295X (retired) | The CR200X-series dataloggers are only compatible if the RF500M radio modem is used. | |
| CR300 (retired) | This data logger is only compatible if the RF500M radio modem is used. | |
| CR3000 (retired) | This data logger is only compatible if the RF500M radio modem is used. | |
| CR310 | This data logger is only compatible if the RF500M radio modem is used. | |
| CR350 | This data logger is only compatible if the RF500M radio modem is used. | |
| CR500 (retired) | This data logger is only compatible if the RF500M radio modem is used. | |
| CR5000 (retired) | ||
| CR510 (retired) | This data logger is only compatible if the RF500M radio modem is used. | |
| CR6 | This data logger is only compatible if the RF500M radio modem is used. | |
| CR800 (retired) | This data logger is only compatible if the RF500M radio modem is used. | |
| CR850 (retired) | This data logger is only compatible if the RF500M radio modem is used. | |
| CR9000 (retired) | ||
| CR9000X (retired) |
Specifications
| Ritron Module | DTX-445 |
| FCC ID | AIERIT17-445 |
| Industry Canada ID | 1084A-RIT17445 |
| FCC Rule Parts | 90 |
| Industry Canada Rule Parts | RSS-119 |
| Frequency Range | 400.5 to 416.5 MHz |
| RF Channels | 8 independent Tx/Rx frequencies |
| Synthesizer Step | 6.25 kHz |
| Channel Spacing | 12.5 kHz |
| Frequency Stability | ±1.5 PPM (-30° to +60°C) |
| Input Voltage | 9 to 17 Vdc |
| Antenna Connector | BNC socket (female) |
| Dimensions | 14.5 x 7.6 x 3.5 cm (5.7 x 3 x 1.375 in.) |
| Weight | 0.2 kg (7.3 oz) |
Current Drain @ 12.5 Vdc |
|
| Receive Standby | 25 mA |
| Transmitter |
|
Receiver |
|
| Receiver Type | 12.5 kHz narrowband |
| Sensitivity | 0.25 μV (12 dB SINAD) |
| Adjacent Channel | -60 dB |
| Receiver Attack Time | < 10 ms (Tx to Rx) |
| Noise Squelch Sensitivity | PC adjustable (factory set for -121 dBm) |
Transmitter |
|
| RF Power Output | 2 W or 5 W (@ 12.5 Vdc) |
| Duty Cycle | 50% (< 13.5 V, 5 W output, 25°C) |
| Voice Emissions Designator | 10K0F3E |
| Data Emissions Designator | 9K8F1D, 11K0F2D, 11K0F3D |
| Transmitter Attack Time | < 10 ms |