The Collins F455FC-60 Mechanical Filter is a high-quality AM filter specifically designed for ham radio base stations. Made in the United States by Collins, this filter is ideal for filtering out unwanted frequencies and improving the overall performance of your radio communication equipment. The model numbers 75S-3B and 75S-3C indicate the specific design of this filter, catering to the needs of amateur radio enthusiasts looking to enhance their transmission capabilities on the AM band.

I listed this as used but it appears to be brand new but I'm not sure so I want to be honest. 73 de KC8FZR