PRODUCT OVERVIEW
This is a compact, cost-effective bandpass filter centered at 1090 MHz, purpose-built for ADS-B and Mode S applications. Typical insertion loss is under 3 dB in the passband, with rejection of 30 dB below 970 MHz and 33 dB from 1150–1300 MHz — enough to keep strong out-of-band signals from overwhelming your receiver before they get there. The filter uses SMA-F PCB edge-mount connectors, handles up to +10 dBm input power, and operates across a -30°C to +85°C range.
APPLICATIONS
If you're running an ADS-B feeder — dump1090, FlightAware, PlaneFinder, or your own SDR setup — this filter protects your receiver from what's around 1090 MHz, not just the signal itself.
Aircraft transponders are weak, and strong neighbors like FM broadcast, cellular/LTE, and other UHF sources can overload an SDR or LNA even when they're not close in frequency. This shows up as dropped messages or a noisy decode rate that has nothing to do with your antenna. Placed ahead of your SDR or LNA, this filter rejects that interference before it reaches the sensitive part of your chain.
Typical uses:
- ADS-B / Mode S feeders (dump1090, FlightAware, PlaneFinder, and similar)
- Protecting an LNA or SDR front end from nearby strong transmitters
- Research-grade or professional ADS-B monitoring stations
SPECIFICATIONS
Passband
1090 +/- 15 MHz
Frequency Minimum Attenuation
1075-1105 MHz 3 dB
DC-970 MHz 30 dB
1150-1300 MHz 33 dB
NOTES
- The filter uses SMA-F PCB edge mount connectors.
- Maximum RF input signal Level: +10 dBm
- Max DC voltage 0 VDC
RELATED PRODUCTS
Don't have an LNA yet? Our ADS-B Filtered LNA (15 dB gain) combines this filter's rejection with amplification in one part — a simpler starting point than buying filter and amplifier separately.
Building a dual-band ADS-B + UAT feeder? You'll need one filter per band, each on its own receive chain — this filter for 1090 MHz, plus the 978 MHz UAT Bandpass Filter for the UAT side. They're not combined in series; each covers its own antenna/SDR path.
