The filter published there is working without problem and needs no or very little tuning
post 11 Apr 2022
RF Filter Links →
Band-Pass Filters for HF Transceivers
from intrastation interference these handy and inexpensive filters can help
Clean Up Your Signals with Band-Pass Filters
design of band-pass filters that provide a level of selectivity and reliability heretofore unavailable
Clean Up Your Signals with Band-Pass Filters
a series of band-pass filters BPFs between 150 W transceivers and 1500 W amplifiers
Crystal band pass filters for QRSS applications
a good RX band pass filter will be an important feature of any future design
Coaxial Stub Filters
You should not need to use a narrowband filter after a transmitter
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from intrastation interference these handy and inexpensive filters can help
design of band-pass filters that provide a level of selectivity and reliability heretofore unavailable
a series of band-pass filters BPFs between 150 W transceivers and 1500 W amplifiers
a good RX band pass filter will be an important feature of any future design
You should not need to use a narrowband filter after a transmitter