People searching “airspy vs sdrplay” are really asking one question: which SDR receiver do I buy so I don’t regret it? Here’s the honest answer, then the details.
The verdict: Buy the SDRplay RSPdx if you want one receiver that does everything — HF through UHF — with no extra hardware. Buy the Airspy R2 if you live on VHF/UHF (satellites, ADS-B, weak-signal work) and want the best raw performance there. If you only care about HF and VHF, the Airspy HF+ Discovery beats both on pure receive quality. Details below.
For the broader landscape of budget options, see our SDR dongles ranked guide — this comparison is about the step-up tier above the $30 dongles.
What you’re actually choosing between
Both are “real” SDR receivers — a big step up from RTL-SDR dongles in dynamic range, filtering, and software support. The difference is philosophy:
- SDRplay gives you one box that covers nearly everything (1 kHz to 2 GHz continuous) out of the box. No gaps, no accessories required.
- Airspy splits the job: the R2 is a VHF/UHF specialist (24–1700 MHz) with superb performance in its range, while HF needs either the HF+ Discovery (a separate, HF/VHF-optimized receiver) or an upconverter accessory.
That single design decision drives almost everything below.
Frequency coverage
| SDRplay RSPdx | Airspy R2 | Airspy HF+ Discovery | |
|---|---|---|---|
| Coverage | 1 kHz – 2 GHz continuous | 24 – 1700 MHz | 0.5 kHz – 260 MHz |
| HF (below 30 MHz) | Yes, native | No — needs SpyVerter upconverter | Yes, and excellent |
| Bandwidth | Up to 10 MHz | Up to 10 MHz | Up to 912 kHz |
| Antenna ports | 3 (switchable) | 1 | 1 |
The RSPdx’s party trick is that there are no gaps: longwave to microwaves in one receiver. The Airspy R2 simply cannot hear HF without the SpyVerter add-on, which adds cost and complexity. On the other hand, if your interest starts at 6 meters and goes up, that gap is irrelevant to you.
Software
This matters more than most buyers expect, because you’ll spend more time in the software than thinking about the hardware:
- SDRplay ships with SDRuno, a polished, full-featured Windows application with excellent HF tools (notch filters, noise reduction, memory panels). It also works with SDR++, SDR Console, GQRX, and CubicSDR.
- Airspy pairs with SDR# (SDRSharp) — fast, lightweight, plugin-rich, and the favorite of the VHF/UHF/satellite crowd. Also supported by SDR++, SDR Console, and GQRX.
Both ecosystems are mature. SDRuno is arguably friendlier for HF listening; SDR# is arguably snappier for VHF/UHF scanning and satellite passes. Neither is a reason to pick the “wrong” hardware — both receivers work with third-party software.
Performance where it counts
- HF listening (shortwave, MW, ham bands): The Airspy HF+ Discovery is the standout — its direct-sampling architecture gives it remarkably low noise on HF. The RSPdx is very good on HF too (its HDR mode was designed for exactly the crowded HF bands), just not quite at the Discovery’s level.
- VHF/UHF weak signal (satellites, tropo, EME): The Airspy R2’s 12-bit ADC and front-end filtering give it the edge for pulling weak signals out of strong-signal environments. This is the receiver satellite operators reach for.
- General scanning and ADS-B: Both are overkill in the best way. Either will run circles around an RTL-SDR dongle.
Price tiers (street reality)
SDRplay’s lineup is a clean ladder: the RSP1B is the budget entry into the ecosystem, the RSPdx is the flagship all-rounder. Airspy pricing sits in the same mid-tier neighborhood, with the HF+ Discovery and R2 each targeting their specialty. Nobody here is competing with $30 dongles — you’re paying for dynamic range and filtering that actually holds up with a real antenna.
We don’t track live Airspy/SDRplay listings at the moment, so check our SDR category for whatever SDR gear we’re currently watching — and the golden rule still applies: learn to read the price history before you buy.
The decision, by use case
Get the SDRplay RSPdx if: you want one receiver for everything — HF nets in the evening, 2m/70cm during the day, ADS-B on the side. No accessories, no coverage gaps, three antenna ports so your HF wire and your discone can stay connected at once. This is the right answer for most hams buying their first “real” SDR.
Get the Airspy R2 if: you know your playground is VHF and up — satellite passes, weak-signal VHF, UHF scanning, trunking. Accept that HF needs a SpyVerter, and in exchange get the best raw VHF/UHF performance in the class.
Get the Airspy HF+ Discovery if: HF and VHF are your whole world (shortwave listening, HF ham bands, 6m/2m). It’s the best pure listener of the three in its range, and it knows it.
Bottom line, one more time: Most hams should buy the SDRplay RSPdx — it’s the only one here with no asterisks. VHF/UHF specialists should buy the Airspy R2. HF-only listeners should buy the Airspy HF+ Discovery. Pick your use case, buy once, and spend the money you saved not buying twice on a better antenna.
Disclosure: HamDeals is reader-supported. If we add Airspy or SDRplay listings in the future, links may earn us a commission at no extra cost to you. Prices in our tracked SDR category are re-verified daily.