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SDR++ vs GQRX Performance Comparison on Multi-Core Systems

Been testing SDR++ 1.2.0 against GQRX 2.17 on my Ryzen 7 system with various SDR hardware (RTL-SDR v4, HackRF One, RSP1A). Interesting findings on CPU utilization and waterfall performance.

SDR++ advantages: Lower CPU usage (~15% vs 25% in GQRX), smoother waterfall on wide spans, better plugin ecosystem developing. The new Low-IF mode fixed the center spike issues I had with SDRplay units.

GQRX advantages: More mature, better AGC implementation, superior noise blanker, rock-solid stability. Remote control capabilities are excellent.

For casual monitoring and weak signal work, still preferring GQRX. But SDR++ is impressive for spectrum analysis and multiple VFO monitoring. Anyone else doing similar comparisons? Particularly interested in experiences with GNU Radio integration differences.

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SDR++ has been my go-to lately due to the lower resource usage and cleaner interface. The plugin architecture is really taking off - there are some excellent digital mode decoders available now. For contest monitoring across multiple bands simultaneously, it's superior to GQRX.

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I've found GQRX more stable for long-duration monitoring sessions, especially for weak signal EME work. The AGC behavior in SDR++ still needs work for moon bounce applications. Stick with GQRX for serious weak signal work until SDR++ matures more.

New to SDR and tried both - SDR++ is much easier to get running initially, but GQRX seems to have better documentation and community support. Which would you recommend for someone just getting started with RTL-SDR monitoring?

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