Begin with the place the antenna will live
Before comparing receivers, inspect the available position from somewhere safe. Which directions face open sky? Which face a wall, a hill or another building? Can you run power or network nearby? Is an outdoor installation permitted and safe? A receiver cannot negotiate with the building next door.
Draw a rough plan. Include the route of the coaxial cable, not just the antenna's final position. Then consider whether the computer and SDR could sit nearer the antenna with network carried further instead. Compare the practical risks of heat, moisture and access before choosing either arrangement.
Keep the first installation reversible. A secure indoor test can tell you whether the hobby interests you before you commission outdoor work.
A purchasing checklist, rather than a shopping cart
| Part | Check before buying | Common wrong assumption |
|---|---|---|
| Host | Exact model, image support, available ports, suitable power and storage. | The latest board automatically works with every image. |
| SDR | 1090 MHz support, driver support, connector, filtering and amplification already present. | Every USB radio works with the same decoder settings. |
| Antenna | Frequency, connector, mounting needs and outdoor rating if relevant. | The tallest antenna is automatically the best one. |
| Coax and adapters | Loss specified at or near 1090 MHz, actual length, connector gender and weather treatment. | A loss figure quoted at a much lower frequency still describes this installation. |
| Power and enclosure | Host requirements, heat, strain relief, ventilation and safe cable entry. | A box labelled waterproof solves condensation and overheating. |
Use the current project instructions and the manufacturers' actual specifications to fill this out. FlightAware's build guide and the ADSB.im project provide installation starting points. Their support lists, not this page's publication date, should decide compatibility. [1] [2]
Understand the radio before adding accessories
The RTL-SDR software stack supports a family of inexpensive USB receivers. Airspy-based reception takes a different integration path; airspy-conf documents one route into existing readsb or PiAware systems. Neither name means you can reuse every setting from the other. [3] [4]
Ask four concrete questions. Does the receiver already amplify? Does it filter? Does an accessory need power over the coax? Does your configuration actually provide that power safely and correctly? Check the product documentation before enabling a bias tee. Do not infer compatibility from a connector.
An amplifier and a filter solve different problems. An amplifier increases a signal and brings its own noise and overload considerations. A filter rejects frequencies outside its passband and also has insertion loss. Neither is a universal repair for poor placement. Keep accessory changes for a measured comparison.
Spend in stages
Our suggested buying order is an operating choice, not a laboratory ranking. First obtain the smallest complete setup that meets the chosen project's requirements. Then establish local reception. Improve placement where safe. Only then spend on a suspected bottleneck, with before-and-after evidence.
Include the unglamorous costs in your budget. Power, storage, adapters, mounting, a weather-suitable cable route and the time to maintain a remote box all count. A receiver that costs little but is awkward to reach can become surprisingly expensive in ladders.
No products on this page have been bench-tested by Skylark for this edition. We do not publish invented prices, universal range promises or a "best" badge based on a repository's popularity.
Sources and review notes
Documentation reviewed on 19 September 2026. Links lead to the source owners. Versions, account benefits and service terms can change. Hardware installation is not independently bench-tested for this edition.
- FlightAware: build a PiAware receiverOfficial setup guide. Hardware and image setup. Check current board support before buying.
- dirkhh / adsb-feeder-imageMaintainer repository. The project behind ADSB.im.
- Osmocom / rtl-sdr mirrorProject mirror. The README identifies the upstream Osmocom repository.
- wiedehopf / airspy-confMaintainer repository. Integration and configuration for airspy_adsb.