Note: bandwidth is measured by the manufacturer at -3 dB; we measured shape factor at -60/-6 dB.

Note: Collins mechanical filters are no longer in production. INRAD has inventory on hand that should last until sometime in 2024. Once our inventory is sold, we will discontinue offering this item. There is no drop-in replacement available.

Note: The #726 installation kit for using this filter with the Collins 32S-3 and 75-S3 series is no longer available. We are unable to obtain any further supply of 453.25 and 453.75 MHz crystals.