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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+AL1200\,\s+high\s+input\s+swr\,\s+all\s+bands\s*$/: 8 ]

Total 8 documents matching your query.

1. [Amps] AL1200, high input swr, all bands (score: 1): Author: Kevin Normoyle <knormoyle@surfnetusa.com>; Date: Mon, 18 Oct 2010 00:05:19 -0700; I must have fried something in my AL-1200 and would be interested in thoughts. Details: Was operating on 15M, rtty, when it died. I watch temps with an infrared thermometer so I wasn't expecting to h; /archives//html/Amps/2010-10/msg00274.html (8,013 bytes)
2. Re: [Amps] AL1200, high input swr, all bands (score: 1): Author: Alek Petkovic <vk6apk@bigpond.com>; Date: Mon, 18 Oct 2010 15:29:26 +0800; Amplifier input/output relays? Are they making and breaking as they should? I fixed a AL811 amp once which had the relays cooked. Dunno how they do things in the 1200. Knowing Ameritron, it will be j; /archives//html/Amps/2010-10/msg00275.html (9,230 bytes)
3. Re: [Amps] AL1200, high input swr, all bands (score: 1): Author: "Hsu" <hsu4qro@gmail.com>; Date: Mon, 18 Oct 2010 15:55:47 +0800; In 2000, My TS-830s allmost kill me due to this problem. The relay seems have problem and 6146B flash over,when the problems solved,I made a big mistake, when it power on, I pull the upper cover from; /archives//html/Amps/2010-10/msg00277.html (10,265 bytes)
4. Re: [Amps] AL1200, high input swr, all bands (score: 1): Author: Hal W5GHZ <w5ghz@yahoo.com>; Date: Mon, 18 Oct 2010 07:11:51 -0700 (PDT); Kevin, Check out the two Zener diodes above the filament transformer mounted on the wall. The high duty cycle may have burned out one or both. Hal W5GHZ I must have fried something in my AL-12; /archives//html/Amps/2010-10/msg00279.html (8,603 bytes)
5. Re: [Amps] AL1200, high input swr, all bands (score: 1): Author: "knormoyle@surfnetusa.com" <knormoyle@surfnetusa.com>; Date: Mon, 18 Oct 2010 12:20:36 -0700; some more info -swapped amp out with al-80b during contest..everything fine, so cabling etc not an issue. Tests are into dummy load. -756 pro II drives the amp. With the rig's auto-tuner off, swr is; /archives//html/Amps/2010-10/msg00281.html (8,380 bytes)
6. Re: [Amps] AL1200, high input swr, all bands (score: 1): Author: TexasRF@aol.com; Date: Mon, 18 Oct 2010 16:28:30 EDT; Kevin, when you say no plate current, do you mean there is no idling plate current when the amplifier is keyed on? Gerald K5GW In a message dated 10/18/2010 2:21:06 P.M. Central Daylight Time, knormo; /archives//html/Amps/2010-10/msg00282.html (8,840 bytes)
7. Re: [Amps] AL1200, high input swr, all bands (score: 1): Author: "knormoyle@surfnetusa.com" <knormoyle@surfnetusa.com>; Date: Mon, 18 Oct 2010 14:45:51 -0700; Billy, AA4NU and Gerald K5GW both I guess asked the same question.. do I see any plate current due to bias when the amp is keyed to transmit (even if no rf in) I'll check that again tonight. My recol; /archives//html/Amps/2010-10/msg00283.html (8,460 bytes)
8. Re: [Amps] AL1200, high input swr, all bands (score: 1): Author: "Roger (K8RI)" <sub1@rogerhalstead.com>; Date: Mon, 18 Oct 2010 18:09:02 -0400; I have to ask as I'm not familiar with the AL-1200, but the legal limit CCS is well within the ratings of the tube, so: Is the cooling in the AL1200 anemic, if one has to be concerned with the RTTY o; /archives//html/Amps/2010-10/msg00284.html (9,942 bytes)

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