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1. [Amps] Drake L-7 arcing on 80m (score: 1): Author: Bill Dzurilla <billdz.geo@yahoo.com>; Date: Sun, 16 May 2010 09:55:52 -0700 (PDT); Hello, I recently acquired an L-7 amp and I tried it out yesterday. I used my Pro II as the exciter, an amp keyer, and a dummy load. There seems to be some problem on 80, unfortunately. On all bands,; /archives//html/Amps/2010-05/msg00176.html (7,236 bytes)
2. Re: [Amps] Drake L-7 arcing on 80m (score: 1): Author: "Bill, W6WRT" <dezrat1242@yahoo.com>; Date: Tue, 18 May 2010 10:31:32 -0700; ORIGINAL MESSAGE: REPLY: Yes, almost certainly. Once a capacitor arcs, the blisters that form are a source of corona which leads to decreased voltage capability in the future. If you can polish out t; /archives//html/Amps/2010-05/msg00179.html (7,452 bytes)
3. Re: [Amps] Drake L-7 arcing on 80m (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Tue, 18 May 2010 14:10:24 -0400; Take the cover off, bypass the interlock, and do a visual when in operation. There could be a switch problem or fixed cap causing the variable to arc. Carl KM1H ______________________________________; /archives//html/Amps/2010-05/msg00180.html (9,077 bytes)
4. Re: [Amps] Drake L-7 arcing on 80m (score: 1): Author: Alek Petkovic <vk6apk@bigpond.com>; Date: Wed, 19 May 2010 06:26:33 +0800; G'day Bill Do as Carl suggests. A friend, VK6RK, had a L7 with the exact same symptom. In his case, you could actually hear the plates rubbing or touching when the amplifier was switched off as well.; /archives//html/Amps/2010-05/msg00185.html (10,589 bytes)
5. Re: [Amps] Drake L-7 arcing on 80m (score: 1): Author: Bill Dzurilla <billdz.geo@yahoo.com>; Date: Tue, 18 May 2010 19:26:54 -0700 (PDT); Thanks to all who responded on and off line. As suggested by Carl, I removed the cover and tried it again. Rig was connected to a Heathkit Cantenna dummy load. As suggested by several, I set the Load; /archives//html/Amps/2010-05/msg00190.html (10,645 bytes)
6. Re: [Amps] Drake L-7 arcing on 80m (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Tue, 18 May 2010 22:47:50 -0400; That is strange. Try placing a thin insulator on top of the cap: teflon, polystyrene, fiberglass, etc and see if its just the coil or the cap arcing independently and not from one to the other. Also; /archives//html/Amps/2010-05/msg00192.html (11,406 bytes)

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