Review on ๐ก NooElec ADS-B Discovery 5dBi Antenna Bundle - High Gain 1090MHz & 978MHz, SMA and MCX-Connected SDRs by Justin Live
Bad antenna 1090: accessories and consumables
Finally got around to testing them with a spectrum analyzer, signal generator and a 20dB bidirectional coupler. The 978MHz antenna has an SWR of approximately 1.2 at 978MHz. The 1090MHz antenna reflects 100% of the power at 1090MHz indicating an open circuit. I have checked that it is not shorted. Its return loss is a flat line at -20dBm (0dBm output - 20dB coupler loss) at any frequency within 200MHz of 1090MHz.
- Compatible with any SDR with SMA or MCX input
- Very expensive
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