UHF Radio Telemetry Systems

Our robust range of radio telemetry systems includes the A723 and A731 UHF radio telemetry units. Our telemetry systems are IP67 rated, making them ideal for harsh environments.

With the A723 already established as the best UHF radio RTU in the industry, Adcon have pushed the technology even further in the new Series 4. The new version has memory, 4-times the resolution of the series 3, integrated SDI-12 adapter, 4-times better radio sensitivity, 30% more battery capacity and much more.
If the area from which you will be collecting data does not have GSM/GPRS access, an RA440 can be installed where GSM/GPRS is available and act as a bridge to your UHF RTUs. The RA440 has two antennas, one connects to a 500mW UHF radio, the other to a Motorola quad-band GPRS modem. The unit can be powered by a standard solar panel.
The solar powered A724 addSWITCH can remotely start and stop devices. With a transmission distance of up to 1km there is no need to visit a site to activate a latching solenoid, you just simply send a radio command to the addSWITCH. The unit supports a wide range of latching solenoids.
Suitable for tricky terrains or to cross large distances. The A731 can successfully communicate through distances beyond 20km when installed properly.
Designed for unattended operation all year round, the A733 addWAVE is a universal logging, measuring and data transmission unit. It is solar powered and can be used in most environments. A multitude of parameters can be collected and transmitted from large scale networks using this device.
Powered by the equipment it is monitoring the A740 addNODE offers superior flexibility and expandability and is fully compatible to other Adcon RTU’s. The memory is good and upgrades are available. It provides Individually configurable I/O ports, analog and digital outputs and event triggered actions.
The A850 is an essential when using an Adcon RTU network whether it is GSM/GPRS, UHF radio, or a combination of both. It controls when and how to retrieve data from your RTUs in the field. There are several versions available all with upgradeable software.

Applications

  • Water quality monitoring;
  • Pressure / level monitoring;
  • Leak detection;
  • Flow monitoring (open channel and pipe);
  • Meteorology;
  • Rainfall, dust & wind monitoring;
  • Irrigation, agriculture & horticulture;
  • Automatic Meter Reading (AMR).

A723 UHF Radio Telemetry Unit

The A723 addIT is a short range "satellite" RTU that can be used in conjunction with a long range RTU or as a standalone application. It is a compact unit offering a total of 10 I/O ports and can be upgraded to transmit an additional 20 SDI-12 sensors by means of an optional A506 SDI-12 Adapter.

Customers appreciate the absolute ease of installation and operation of the A723. The logger, the radio and the battery pack form an integrated device, neatly packed into a single aluminium enclosure, giving no need to worry about interfacing between logger and radio, cabling, or proper installation inside a protective enclosure. It's simply a matter of clamping the device to a pole and plugging in your sensors.

You will find a license free frequency band for this device in virtually any country in the world. With an output power of 10mW it can operate on any frequency between 432MHz and 470MHz. While we rate the transmission distance of this device with up to 1km Line of Sight (a bit over half a mile), this distance can largely be extended by using any Adcon long range RTU (e.g. the A731, A733 or A740) as a relay station.

All major features of the A723 can be modified via radio, even the transmission frequency. With the exception of an occasional firmware upgrade, there is never any need to open up the unit.

RA440

The RA440 acts as a bridge between UHF RTUs and the GPRS network. Making this possible are one 500mW UHF radio (as found in our A733 addWAVE RTU) and one Motorola Quad-Band GPRS modem (as used in the A753 GSM RTU). The RA440 connects to the A850 Gateway by GPRS.

If you need to collect data from a remote area which is not covered by GSM, and if you have no place with mains power and internet or phone connection
nearby to install an A850 Telemetry Gateway, then you put up an RA440 in the nearest area which has GSM/GPRS coverage, and from here you reach out to the radio RTU by UHF. Power comes from a standard solar panel, charging the internal battery. To make it easier to hold spare parts the RA440 uses the same NiMH batteries as the A733 / A753 series of RTUs. If you need lots of power for frequent communication you can furthermore put a second battery pack inside the RTU, and also connect a standard 12V battery to its external power port.

The device comes with two antennas, a GSM antenna to be connected directly to the case, and an external antenna kit for UHF communication. Please do NOT connect both antennas to the RA440 directly! Since the RA440 communicates in parallel by GSM and by UHF the two antennas would create too much interference and therefore block each other.

What's even better is the fact that you can upgrade your A850 Telemetry Gateway to talk to not only one A440 or RA440, but to up to ten! That will let you build a local UHF network around the A850 in your office, and up to 9 UHF subnetworks anywhere in the world - as long as the RA440 has good GPRS connection!