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A "brick wall" filter would be required to attenuate an adjacent channel by that magnitude. Frankly, unless you're willing to spend thousands of dollars on an experiment, it isn't going to happen. Trying to have a 30+ db roll-off in a vary narrow span of less than a couple of hundred kHz just isn't going to happen without a LOT of LC pairs.
My suggest is to wait until the local station goes off the air as that will resolve the problem until the desired stations move.
Last edited by ADTech; 10-Jul-2017 at 12:41 AM.
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