Building a 50 MHz Notch Filter with Coax Cable
By DH8BQAThis project documents the construction of a coaxial 50 MHz notch filter to eliminate inter-band interference between 50 and 70 MHz transceivers. Using RG-213 coax and based on quarter-wave stubs, the filter achieved a 44 dB attenuation at 50.060 MHz while maintaining low insertion loss on 70 MHz. A dual-stub design broadened the notch response and minimized attenuation on 70 MHz to 0.2 dB. Fine-tuned using an FA-NWT network tester and Elecraft XG3 signal source, the filter effectively resolved interference for seamless dual-band operation.
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You will find this resource in just one category on our links directory. The title of the main category is Filters and it deals mainly with A wide collection of RF Filters, band-pass filters. The resource has been on our site since Wednesday Dec 18 2024, and it has been viewed 9 times. So far no one has rated it yet. Be the first to rate it!
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