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I'd like to connect equipment to a coaxial surge protector. Is it needed for a properly grounded coaxial cable? How much attenuation does a typical coaxial surge protector cause over the range of frequencies it will pass?

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up vote 4 down vote accepted

APC has a unit that says "Insertion Loss: 0 dB to 3.0 dB over rated frequency range" in their documentation.

Product page:

BlackBox also has a unit that says: "Low signal loss." Read into that what you will.

Product page:`

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I don't think you'll have major loss... I already did it for one of my client and I didn't notify any performance downgrade on an internet connection before or after the cable plug in the surge protector. The speed test was the same after as before so...

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