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TUBES - FS: Amperex 4CX250F Ceramic Tube NOS Amperex 4CX250F Ceramic output tube. Tube was mistakenly purchased to replace a 4CX250B. As we found out, the circuit for the 4CX250B is a 6 Volt filament as is the 4CX250B. We then found out that the 4CX250F uses a 26.6 Volt filament source…… so this tube is up for sale as maybe it was developed for military use with that filament voltage? $50 shipped CONUS. Not interested in trades. Listing #1677338 by KH6JTM Submitted on 02/29/24 Submitted from c-73-242-208-180.hsd1.nm.comcast.net Click to Contact Back to Previous Page

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