Congratulations on your new Aurora transceiver. Aurora represents the next generation of FlexRadio technology, offering exceptional transmit performance, advanced signal processing, and intelligent protection systems. To ensure reliable operation and the best possible performance, it’s important to understand how Aurora manages factors such as SWR, tuning, and adaptive processing. The following notes highlight key differences from previous Flex models and provide essential guidance for new owners.
Powering On the Aurora:
The Aurora utilizes a 110/220 VAC (60 or 50 Hz) auto-sensing internal power supply. Connect the IEC power cable from the connector on the radio to your AC wall outlet. Please note that a master power switch is integrated into the power connector, and it must be turned on before the radio will boot.
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.
Use with an External Linear Power Amplifier – NOT RECOMMENDED
It is STRONGLY DISCOURAGED to use an external linear amplifier with Aurora. Most linear amplifiers are
designed to accept no more than 100 watts of drive. Connecting one to Aurora’s 500-watt output will
almost certainly result in damage to the external amplifier and will constitute a violation of your
warranty.
Using an External Tuner:
When using an external tuner, set the TUNE Power slider to 9 or less.
This disables internal fault limits, allowing the external tuner to complete its tuning process.
Setting the TUNE Power to 10 or higher can cause faults during tuning.
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.