Roofing filter

A roofing filter is a type of filter used in a HF radio receiver. It is usually found after the first receiver mixer. The goal of a roofing filter is to limit the passband of the first intermediate frequency (IF) stage. Strong signals outside the channel which may cause overloading and distortion by the following amplifier stages and mixers are blocked.

单词	Roofing filter
释义	Roofing filter 英语百科 Roofing filter A roofing filter is a type of filter used in a HF radio receiver. It is usually found after the first receiver mixer. The goal of a roofing filter is to limit the passband of the first intermediate frequency (IF) stage. Strong signals outside the channel which may cause overloading and distortion by the following amplifier stages and mixers are blocked.
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