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Old 05-15-2025, 11:06 AM
Videotechie Videotechie is offline
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Join Date: Jun 2022
Posts: 51
Kolster k23 radio-AWESOME KOLSTER Underrated

Awesome kolster k23 radio. Radios not mentioned much. Push pull output and electrified reproducer.
Each sub chassis has a brass plate with assembly title. Stamped tube designated for sockets. Main chassis. Has quick release for service.
Rutgers univ. Put online a kolster catalog with a wealth of info. Ties to federal and Columbia brands. Lots of photos showing radios being built, industrial installations, research.

I fixed the tuning gang by hand filing down the tight tolerances with the dial drum made of pot metal. There's a rectangle metal guide at the front left of tuning drum that can be dremeled out. I hand filed the dial drum instead. Lots of work. The capacitor gang appears to be made of aluminum and has makers mark.
Way underrated radios. That SAME online catalog states tuning cap cage made out of cast aluminum.
Should be a sweet sound when done.
These sets are seriously worth saving and restoring.
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Last edited by Videotechie; 11-05-2025 at 12:50 PM.
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