Broadcast band filter
By VK3ILThis project involved designing a 7-pole Chebychev broadcast band filter to address severe interference issues caused by a new horizontal loop antenna on the KN-Q7A transceiver. The interference overwhelmed the transceiver’s front end, so a custom filter with a 3.5 MHz cutoff was built using silver mica capacitors and type 6 T130 toroidal cores. Encased in a diecast box with SO239 sockets, the filter blocks strong signals from the broadcast band, achieving over 100 dB attenuation. Tested up to 100W, it reduces interference effectively while maintaining low insertion loss across HF bands.
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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 Tuesday Nov 12 2024, and it has been viewed 33 times. So far no one has rated it yet. Be the first to rate it!
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