Superior radios designed for MAXIMUM performance

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4RF has a long history of developing high performance radios, and the Aprisa SR family builds on this same engineering excellence.

The Aprisa SR and Aprisa SR+ are distance-engineered and optimised for SCADA and telemetry applications, providing reliable, robust performance however demanding the conditions: what we call ‘real world radio’. RF performance is unbeatable, with attention paid to every element of the design: transmitter, receiver, modulation and efficiency.

The receiver maintains exceptional low noise operation via excellent sensitivity for greater distance and high selectivity and intermodulation suppression for superior protection from interference.

This performance is complemented by fast switching circuitry and high transmit power ensuring long distance operation with exceptional system reliability and availability.


Which radio is best for me?

What are the major differentiating factors?

Aprisa SR
View the SR Datasheet 

Aprisa SR+

View the SR+ Datasheet

Speed Up to 19.2 Kbps   Up to 96 Kbps (216 Kbps with 50 Khz BW in 220 and 900 bands)
Bandwidths 12.5 or 25 Khz (order as different part numbers) 12.5 kHz, 25 kHz or 50 kHz (220 and 900 bands) Bandwidth is software selecable
Antenna Ports Single or Dual (order as different part numbers) Single or Dual, software selectable
Operation Serial or Ethernet bridge Serial and Ethernet. Bridge or Router mode with SNMP and IP filtering
automatic firmware rollout to remotes, enhanced diagnostics
Ports 2 Ethernet, 1 Serial 2 Ethernet, 2 Serial and 1 USB
Frequencies 136 Mhz and 400 Mhz bands
When ordering specify the operational frequency band you want.

 
215 – 240 MHz, 400 – 470 MHz, 450 – 520 MHz, 896 – 902 MHz, 928 – 960 MHz
When ordering specify the operational frequency band you want.

 

How about a hot swappable redundant base?

You don't need a special base station to operate a 4RF Aprisa SR+ network since each radio can be software selected to operate as a remote or a master.  However, for mission critical operations where you need a hot standby master station, 4RF has the answer.

4RF's Aprisa SR+ Protected 1+1 Master Station is the industry’s only available master station combining actual hot standby with hot swappable RF sections and full monitoring of both the active and standby radio.  
Click here to view the 1+1 Base Datasheet

“At 4RF we understand that two issues are key for the critical infrastructure SCADA customers. Having a seamless switchover in case of radio failure and not interrupting the data transfer when replacing a faulty radio. In addition while industry best practice is to place protected master stations at base station locations, sometimes a remote site can be equally crucial. For this reason, the Aprisa SR+ protected station can act as a master base station, a remote or a repeater, giving our customers both security and flexibility never seen before.”

Steve Moffat, 4RF COO.
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Need to migrate from your existing system to 4RF?

It just keeps getting better!

 The 4RF Migration Master Station (MMS) removes the major barriers of upgrading an outdated SCADA radio network.  During the transition, the MMS works alongside the legacy master station, utilizing the existing infrastructure and frequency assets, thus enabling companies to setup a high speed Aprisa SR+ radio network in parallel with the legacy network.  Communications with both newly installed Aprisa SR+ and legacy remotes occur seamlessly during the replacement process.

“4RF is leading the Ethernet evolution and this innovation is about to change the current market landscape.  The MMS opens the way for companies to install the Aprisa SR+, giving customers up to six times faster over the air data speeds with full management and security capabilities from day one.  Customers can naturally change out old or discontinued serial radios at their own pace and avoid a costly forklift project or significant network downtime.”

J.L. Betts, 4RF Sales Director, North America and a member of the ENTELEC Technical Advisory Board

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4RF Migration Master Station (MMS)

See the MMS Datasheet 

The 4RF MMS removes the major barriers of upgrading an outdated SCADA radio network.  During the transition, the MMS works alongside the legacy master station, utilizing the existing infrastructure and frequency assets, thus enabling companies to setup a high speed Aprisa SR+ radio network in parallel with the legacy network.  Communications with both newly installed Aprisa SR+ and legacy remotes occur seamlessly during the replacement process. 

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