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1. [AMPS] SB-220 G-G mods (score: 1): Author: measures@vcnet.com (measures); Date: Wed, 1 Dec 1999 05:57:26 -0700; Yes, however, the grid-resonance moved only a small amount. I reversed the mod so that I could use grid fusing resistors. The amplifier was apparently stable either way. At the time, I was using low; /archives//html/Amps/1999-12/msg00003.html (7,494 bytes)
2. [AMPS] SB-220 G-G mods (score: 1): Author: w1nr@eecorp.com (Michael McCarthy, W1NR); Date: Tue, 30 Nov 1999 21:57:55 -0500; Well, at the start of the CQWW CW Contest, my SB-220 smoked. One of a near new set of Eimac 3-500Z's developed a grid-cathode short and smoked the grid bypass choke. After some research, it appears t; /archives//html/Amps/1999-11/msg00001.html (7,158 bytes)

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