This is a product with identical RF/electrical performance as the grade "A" variant, but with cosmetic problems:
The paint does not properly stay on the metal surface and peels off. If you order this B-grade variant, you are accepting this minor issue.
This is a cavity filter for the 868 MHz ISM band, used by LoRA, SigFox and many other narrow-band IoT technologies.
You can use it to attenuate any out-of-band interference. It will attenuate transmissions from nearby cellular band.
Both connectors are SMA (female).
It is not suitable for outdoor environments.
It can support up to 30W of RF power and has the following characteristics:
|868 MHz ISM Cavity Filter|
|Pass Band||863 - 870 MHz|
|Insertion Loss||<= 1.0 dB|
|Passband Ripple||0.2 dB|
|Rejection||>= 40 dB @ 833 MHz; >= 44 dB @ 903 MHz|
|Power||30 W average RF power (max)|
|Temperature||-10 to 50 Centigrade|
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