Benefit of the Receiver Bandwidth?

People often ask whether it is better to use a high‑quality receiver with small bandwidth or a low‑cost receiver with larger bandwidth.

To answer this, I performed several tests on VHF/UHF, using:

• a professional receiver with 1 MHz bandwidth
• a low‑cost receiver with 4 MHz bandwidth
• same antenna, same location, same time period

Result

• 1 MHz high‑quality receiver: 2773 decoded signals
• 4 MHz low‑cost receiver: 5671 decoded signals

Conclusion

A wider bandwidth gives you more signals at the same time — therefore, even a cheaper device with larger bandwidth may decode more simply because it “sees” more of the spectrum.

However:

• The quality (dynamic range, noise figure, phase noise, filtering) affects the decoding success rate on weak or overlapped signals
• The bandwidth determines how many channels you can monitor simultaneously

Practical takeaway

• If your goal is maximum number of signals → More bandwidth is usually the biggest benefit
• If you need very weak signals, dense signal environments, or professional-grade reliability → Receiver quality matters more
• In many COMINT/monitoring applications, bandwidth provides the largest operational advantage, especially in VHF/UHF
• The ideal setup is always a receiver that combines high bandwidth with high signal quality