- 1. [Amps] Alpha 87A Question (score: 1)
- Author: jon s <k9js_j@yahoo.com>
- Date: Sat, 17 Sep 2005 13:50:35 -0700 (PDT)
- I am relaying this for my Father (AI9U) who does not subscribe Last night he was back at his station after a 10 day period of non-use FT920/Alpha 87A/3 ele Steppir/40_80 Dipole With the Amplifier Off
- /archives//html/Amps/2005-09/msg00178.html (6,930 bytes)
- 2. Re: [Amps] Alpha 87A Question (score: 1)
- Author: David Kirkby <david.kirkby@onetel.net>
- Date: Sat, 17 Sep 2005 22:30:50 +0100
- Parasitic oscillation!! They get blamed for everything on here, but perhaps even they are not that troublesome. Is sounds like something has probably shorted the incoming mains supply to me. I suspec
- /archives//html/Amps/2005-09/msg00180.html (7,562 bytes)
- 3. Re: [Amps] Alpha 87A Question (score: 1)
- Author: R.Measures <r@somis.org>
- Date: Sat, 17 Sep 2005 16:01:01 -0700
- Hello, Jon -- Around 40% of the owners I surveyed reported inexplicable sudden events that required factory service to correct. When Dick. WØID was a participant on AMPS. he told me he had see
- /archives//html/Amps/2005-09/msg00185.html (8,861 bytes)
- 4. Re: [Amps] Alpha 87A Question (score: 1)
- Author: David Kirkby <david.kirkby@onetel.net>
- Date: Sun, 18 Sep 2005 02:01:33 +0100
- If I understand the orginal poster correctly, the amp made the "incredible bang" when it was "Off". That I take as meaning the power switch was in the Off position. Perhaps I misunderstood the meanin
- /archives//html/Amps/2005-09/msg00190.html (9,186 bytes)
- 5. Re: [Amps] Alpha 87A Question (score: 1)
- Author: "m.ford" <k1ern@direcway.com>
- Date: Sat, 17 Sep 2005 21:55:32 -0400
- What "Off" means exactly needs some clarification. It used to mean physical disconnection of the mains but nowadays it means logic state "zero". This however conflicts with the English term "one off"
- /archives//html/Amps/2005-09/msg00192.html (7,991 bytes)
- 6. Re: [Amps] Alpha 87A Question (score: 1)
- Author: R.Measures <r@somis.org>
- Date: Sun, 18 Sep 2005 04:15:27 -0700
- When the standby switch is in the amp-off position, there's high-V present. agreed, David ... Richard L. Measures, AG6K, 805.386.3734. www.somis.org _______________________________________________ Am
- /archives//html/Amps/2005-09/msg00202.html (9,535 bytes)
- 7. Re: [Amps] Alpha 87A Question (score: 1)
- Author: jon s <k9js_j@yahoo.com>
- Date: Sun, 18 Sep 2005 16:13:45 -0700 (PDT)
- Thanks to everyone so far for their thoughts The 87A was completely "OFF" - not in standby. I understand that there is still some power running some some of the circuits as the meters indicate excite
- /archives//html/Amps/2005-09/msg00217.html (9,343 bytes)
- 8. Re: [Amps] Alpha 87A Question (score: 1)
- Author: David Kirkby <david.kirkby@onetel.net>
- Date: Mon, 19 Sep 2005 00:41:46 +0100
- I can't help feel you have not looked hard enough. For something to flash like that, it must leave some indication of where it happened. From what others have said here many times, there can be probl
- /archives//html/Amps/2005-09/msg00218.html (9,537 bytes)
- 9. Re: [Amps] Alpha 87A Question (score: 1)
- Author: "Keith Dutson" <kdutson@sbcglobal.net>
- Date: Sun, 18 Sep 2005 21:21:36 -0500
- My 87A blew in a similar manner, but I was not here to hear the bang. It was also completely off. The 240 circuit breaker (30A) was tripped. Both fuses were blown. Replacing the fuses did no good. I
- /archives//html/Amps/2005-09/msg00224.html (11,130 bytes)
- 10. Re: [Amps] Alpha 87A Question (score: 1)
- Author: R.Measures <r@somis.org>
- Date: Mon, 19 Sep 2005 07:29:34 -0700
- Agreed. The mystery of where a SB-220 flashes when it makes a big-bang took many moons to solve. Turns out it is from an anode-cooler's top-screw - usually V2 - upward to the bottom side of the perfo
- /archives//html/Amps/2005-09/msg00228.html (11,172 bytes)
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