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Total 8 documents matching your query.

1. [RTTY] Amp/Temp (score: 1): Author: Courtney Judd <k4wi@k4wi.net>; Date: Sat, 07 Oct 2017 09:58:10 -0500; I am looking for any ideas or your thoughts on what would be the safe or maximum operating temperature of a HF amplifier in rtty operation. My setup here is a FT5000 driving an Alpha 86 to about 1200; /archives//html/RTTY/2017-10/msg00024.html (8,476 bytes)
2. Re: [RTTY] Amp/Temp (score: 1): Author: Rudy Bakalov via RTTY <rtty@contesting.com>; Date: Sat, 7 Oct 2017 11:21:22 -0400; Id venture to guess that the answer largely depends on the quality of the materials used in a particular amp. That said, heres my experience with a similar amp, 2 x GU74, based on the old Alpha 91 pl; /archives//html/RTTY/2017-10/msg00025.html (9,694 bytes)
3. Re: [RTTY] Amp/Temp (score: 1): Author: Mark Mumaw <nu6x@esedona.net>; Date: Sat, 7 Oct 2017 08:43:26 -0700; My Acom 2000A will regularly get up to 70C (158F). With your rear intake fan,the added exhaust fans and assuming you have good ventilation, especially on the intake, I wouldn't be too concerned. I h; /archives//html/RTTY/2017-10/msg00026.html (9,611 bytes)
4. Re: [RTTY] Amp/Temp (score: 1): Author: "David G3YYD" <g3yyd@btinternet.com>; Date: Sat, 07 Oct 2017 12:22:01 -0500; RTTY contesting when running with not many takers is when the highest long term duty cycle happens. It can get as high as 70 to 80% TX time. Otherwise it is normally around 50%. If worried about this; /archives//html/RTTY/2017-10/msg00027.html (9,813 bytes)
5. Re: [RTTY] Amp/Temp (score: 1): Author: "Jeff" <keepwalking188@ac0c.com>; Date: Sat, 7 Oct 2017 12:04:00 -0500; I ran a 76PA for many years with the added muffen fan. The temps would move up but nothing into the danger zone. The critical parameter for temp is the seal temp which David mentions. But here you ar; /archives//html/RTTY/2017-10/msg00028.html (11,141 bytes)
6. Re: [RTTY] Amp/Temp (score: 1): Author: Bill Turner <dezrat@outlook.com>; Date: Sat, 7 Oct 2017 18:02:11 +0000; The most critical point in the entire amp is the temperature of the tube seals, i.e. where the glass and metal or ceramic and metal meet. The max temp varies from tube to tube and will be specified i; /archives//html/RTTY/2017-10/msg00029.html (7,556 bytes)
7. Re: [RTTY] Amp/Temp (score: 1): Author: groupsrichart@gmail.com; Date: Sat, 7 Oct 2017 15:11:09 -0400; The Alpha 86 is a real beast. According to the manual the manufacturer rated it for "continuous operation at a power output of 1500 watts PEP, keyed CW, SSTV, RTTY or AM, with no time limit (rated fo; /archives//html/RTTY/2017-10/msg00030.html (9,383 bytes)
8. [RTTY] Amp/Temp (score: 1): Author: Courtney Judd <k4wi@k4wi.net>; Date: Mon, 09 Oct 2017 09:08:20 -0500; Thanks guys for all the comments on my question about temperature and my amplifier. I feel better now that everyone pretty well confirmed that I was pretty safe!. The wife's comment about frying eggs; /archives//html/RTTY/2017-10/msg00032.html (7,230 bytes)

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