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MISC - Antique Dow Key DKC-RFB tube Preamp This listing is for a Dow Key 1.5 thru 30 mhz broadband preamp, with original box and instruction sheet it uses a 6CB6 tube, and requires 6.3 VAC for filaments and 125 VDC for B+. Those voltages are usually drawn from the tube receiver you are using. Comes in original box, with instruction sheet. Not tested, but circuit is extremely simple, and instruction sheet has schematic. Instruction sheet is dirty, dusty, box is the same. Previous exposure to smoke is likely, should clean up without too much effort. If you need a spare 6CB6 let me know and I will provide one for no extra charge. $15 plus shipping, send me your zip. PayPal, cash, check if I know you. 73 Bill W9VC Listing #1742787 by W9VC Submitted on 09/11/25 Submitted from c-68-38-21-15.hsd1.in.comcast.net Click to Contact Back to Previous Page

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