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1. [Amps] SB-220 grid current (score: 1): Author: "n5pu" <n5pu@cableone.net>; Date: Fri, 24 Nov 2006 15:18:43 -0600 (Central Standard Time); Hi Gang.......what could cause the grid meter to swing negative and no power out? Leon, N5PU _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contest; /archives//html/Amps/2006-11/msg00260.html (6,054 bytes)
2. Re: [Amps] SB-220 grid current (score: 1): Author: "Robert B. Bonner" <rbonner@qro.com>; Date: Fri, 24 Nov 2006 17:02:58 -0600; No plate voltage Hi Gang.......what could cause the grid meter to swing negative and no power out? Leon, N5PU _______________________________________________ Amps mailing list Amps@contesting.com htt; /archives//html/Amps/2006-11/msg00261.html (7,429 bytes)
3. Re: [Amps] SB-220 grid current (score: 1): Author: Gudguyham@aol.com; Date: Fri, 24 Nov 2006 18:09:32 EST; Hi Gang.......what could cause the grid meter to swing negative and no power out? Leon, N5PU Your grid shunt resistor .82 ohms is opened. I sell them. 73 Lou _________________________________________; /archives//html/Amps/2006-11/msg00262.html (6,589 bytes)
4. Re: [Amps] SB-220 grid current (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sat, 25 Nov 2006 12:27:20 -0500; No. No plate voltage causes the grid meter to pin at low levels of drive. In a GG amp a negative grid meter swing is caused by a short from the cathode to chassis ground. That can be a shorted tube; /archives//html/Amps/2006-11/msg00264.html (7,004 bytes)
5. Re: [Amps] SB-220 grid current (score: 1): Author: Gudguyham@aol.com; Date: Mon, 27 Nov 2006 01:55:26 EST; In a GG amp a negative grid meter swing is caused by a short from the cathode to chassis ground. That can be a shorted tube or anything on the cathode shorted to the chassis. In an Sb-220, if the amp; /archives//html/Amps/2006-11/msg00266.html (7,167 bytes)

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