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Customer
Reviewed in the United States on February 26, 2025
I don't like that the description says DC-4.0GHz operating frequency when the attenuation drops to nothing just before 2GHz. I'm being generous rounding up to 3 stars from 2.5 stars. It only operates through half the declared frequency range. Haven't verified the impedance.
Robert
Reviewed in the United States on January 27, 2025
This attenuator works perfectly for fine-tuning and testing my ham radio setup. The SMA connectors fit snugly, and it feels solid and well-made. It handles frequency adjustments smoothly without any noticeable signal loss. Great for protecting sensitive equipment during testing or calibration. If you’re into radio experiments, this is a handy tool to have around.
MarkG
Reviewed in the United States on December 30, 2024
This Radio Frequency Attenuator DC Double Female Head SMA Attenuator 50Ω is only fair as an attenuator. Using a VNA that reads pretty accurately in the .+/- 1 dB range, the attenuators are only fair. I'd consider this a +/- 1 dB thing, maybe worse in some cases.The 0 dB section is not very useful. It is generally in the - 0.5 dB range and has wide variation. The calibration check is an SMA barrel and is no worse than about - 0.1 dB over the 3 GHz range that I can measure.The - 10 dB section averages about - 10 dB but has wide excursions of +/- 0.5 dB and worse at the 3 GHz end.The - 20 dB section averages about - 19.5 dB and has even wider excursions, +/- 0.5 dB at the low end and worse above 1.5 GHz.The - 30 dB section ranges from - 29 dB to - 30.5 dB and has wide excursions above 1.5 GHz.I think coaxial attenuators, which do cost way more, are probably the better choice. If you do not need great accuracy, this may work.
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