Aurora represents the next generation of FlexRadio technology, delivering exceptional transmit performance, advanced digital signal processing, and intelligent protection systems. To ensure reliable operation and the best possible on-air results, it’s important to understand how Aurora manages factors such as SWR, antenna tuning, and adaptive RF processing.
The notes below highlight key differences from previous FlexRadio models and provide essential guidance to help new owners get started quickly and operate with confidence.
Powering On the Aurora:
Aurora is equipped with an internal auto-sensing power supply that operates from 110/220 VAC at either 60 Hz or 50 Hz. Connect the supplied IEC power cable from the rear-panel connector on the radio to an appropriate AC wall outlet.
A master power switch is integrated into the power entry module. This switch must be turned on before the radio will boot or respond to front-panel controls.
Ensure the AC source meets local electrical requirements before applying power to the unit.
SWR Sensitivity:
Aurora is more sensitive to SWR and manages it differently from other FlexRadio models.
Output power will begin to reduce automatically (SWR foldback) when SWR exceeds 1.7:1.
Transmission will stop, and a fault will be set if SWR exceeds 2.5:1.
External Linear Power Amplifier Usage – NOT RECOMMENDED
The use of an external linear power amplifier with Aurora is strongly discouraged. Most external linear amplifiers are designed to accept no more than 100 watts of RF drive. Connecting such an amplifier to Aurora’s 500-watt output will almost certainly result in damage to the external equipment and will constitute a violation of your warranty.
Always operate Aurora in accordance with its published specifications and approved configurations to ensure safe, reliable performance and to protect your investment.
Using an External Antenna Tuner:
When using an external tuner, set the TUNE Power slider to 3 or less.
This disables internal fault limits, allowing the external tuner to complete its tuning process.
Setting the TUNE Power to 4 or higher can cause faults during tuning.
TGXL Info: Aurora software integrates the TGXL tuner with the radio; however, tuner performance is still a “work in progress”. You may encounter situations where the TGXL fails to find a match or aborts the tune with low power, high power, or radio faults. We are working to correct this situation in a future software release.
APD (Adaptive Predistortion):
Aurora relies on APD to maintain optimal transmit signal quality.
APD should remain enabled at all times.
Internal ATU (Automatic Tuning Unit):
The internal ATU is rated for full-power operation up to 3:1 SWR.
It may be able to tune higher SWR loads, but it is not rated for full power beyond 3:1.
When operating above 3:1 SWR, reduce output power to prevent faults or damage.