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1. [AMPS] ?: 8921 Pinout (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Fri, 16 Oct 1998 18:48:27 EDT; Hello everyone, Would anyone on this list happen to know the pinout for an 8921 (4CX600JA) ? Or an easy way to find it? Thanks in advance & 73, Marv WC6W * ___________________________________________; /archives//html/Amps/1998-10/msg00223.html (7,144 bytes)
2. [AMPS] ?: 8921 Pinout (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sat, 17 Oct 1998 10:49:19 -0400; No pin-out in my short form book Marv but I would be willing to bet it is the same as the 4CX250. You can use an ohmeter to cfm: 1 and ring Screen 2,4,6,8 Cathode 3,7 heater key grid Let me know if t; /archives//html/Amps/1998-10/msg00232.html (7,671 bytes)
3. [AMPS] ?: 8921 Pinout (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sat, 17 Oct 1998 22:58:52 +0100; In a word, weird. It may looks like a 4CX250/350/400 base, but IIRC the control grid is on the pin that's missing from a normal socket, and the center spigot is a heater connection. 73 from Ian G3SEK; /archives//html/Amps/1998-10/msg00245.html (7,386 bytes)

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