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Total 15 documents matching your query.

1. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: wa9als@starband.net (WA9ALS - John); Date: Thu, 4 Oct 2001 17:45:04 -0500; Near the end of the CQWWRTTY test (30+ hrs), while running only 1000W, we heard a buzz from somewhere near the AL-1200. I yelled wildly at Alan to hit ESC to kill transmit. I then investigated and fo; /archives//html/RTTY/2001-10/msg00102.html (10,266 bytes)
2. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: jflanders2@home.com (Jerry Flanders); Date: Thu, 04 Oct 2001 20:05:53 -0400; The AL-1200 is a pretty rugged amp. Quoting from Ameritron's literature on it:"it can deliver power of more than 2500 watts PEP two tone output for a half hour!". You were running it at only 40% of t; /archives//html/RTTY/2001-10/msg00104.html (8,729 bytes)
3. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: wa9als@starband.net (WA9ALS - John); Date: Thu, 4 Oct 2001 19:45:32 -0500; Well, I'm certain I could've fried an egg on the top of it - I hate to think what it would be like at 2500 watts! ;-); /archives//html/RTTY/2001-10/msg00105.html (8,641 bytes)
4. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: w8ik@subich.com (Joe Subich, K4IK); Date: Thu, 4 Oct 2001 21:11:17 -0400; 2500 Watts PEP two tone is about 600 Watts DC (6dB peak to average for a two tone signal) ... RTTY is a single tone mode. 1000 watts RTTY at 50% duty cycle is putting a real hurt to that amplifier ..; /archives//html/RTTY/2001-10/msg00106.html (9,942 bytes)
5. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: w7why@harborside.com (Tom Osborne); Date: Thu, 04 Oct 2001 15:02:00 +0100; HI John Once the arcing starts, it makes a carbon trail between the 2 contacts and you have to take it apart and clean all the carbon off the bandswitch or it will follow the path between the switch; /archives//html/RTTY/2001-10/msg00108.html (8,232 bytes)
6. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: jflanders2@home.com (Jerry Flanders); Date: Fri, 05 Oct 2001 00:00:37 -0400; The reason I bought my AL-1200 was because it appeared to be such a rugged amp and appeared fully capable of RTTY service at the maximum legal 1.5 KW. What I quoted before is from advertising literat; /archives//html/RTTY/2001-10/msg00112.html (10,573 bytes)
7. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Fri, 05 Oct 2001 03:42:15 -0700; _________________________________________________________ You're right about the AL-1200 not being built for QRO RTTY contesting. I had the tank assembly get so hot it melted the solder connections,; /archives//html/RTTY/2001-10/msg00115.html (9,737 bytes)
8. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: wa9als@starband.net (WA9ALS - John); Date: Fri, 5 Oct 2001 07:27:37 -0500; Bill wrote: You're right about the AL-1200 not being built for QRO RTTY contesting. I had the tank assembly get so hot it melted the solder connections, once on 80 meters and once on 160 meters. When; /archives//html/RTTY/2001-10/msg00119.html (9,821 bytes)
9. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: w8ik@subich.com (Joe Subich, K4IK); Date: Fri, 5 Oct 2001 09:39:16 -0400; Jerry, The advertising claim is LOWER than the manual specification - normally things are the opposite. If the amplifier is rated for 1/2 hour of continuous carrier at 1500 Watts, I would expect it t; /archives//html/RTTY/2001-10/msg00120.html (11,698 bytes)
10. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: wa7fab@cdsnet.net (Van K7VS); Date: Fri, 5 Oct 2001 08:26:27 -0700; John, my two cents. Over the years on RTTY I used an NCL-2000 at 600 watts out no problems...3 - 4 db down from 1500 watts out. For many years used Amp Supply linears called LK-550. Had two of them b; /archives//html/RTTY/2001-10/msg00123.html (10,013 bytes)
11. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: k4ww@home.com (Shelby Summerville); Date: Fri, 5 Oct 2001 14:49:07 -0400; As a "happy without any problem" owner of an AL-1200, I take exception to your opinion, to which you are entitled! I have seen a HF-2500 exhibit the same problem, unless the drive power was reduced!; /archives//html/RTTY/2001-10/msg00130.html (11,103 bytes)
12. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: jjreisert@alum.mit.edu (Jim Reisert); Date: Fri, 5 Oct 2001 12:02:52 -0700 (PDT); The HF-2500 is extremely sensitive to grid current. 5 or so years ago, we used one in an SSB contest at KC1XX and the thing shut down on a frequent basis. NEVER AGAIN. We have at least 4 (maybe more); /archives//html/RTTY/2001-10/msg00131.html (9,362 bytes)
13. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Fri, 05 Oct 2001 15:12:51 -0700; _________________________________________________________ I've run my HF-2500 for about three years now and the only time it shut down was from pilot error. At 1500 watts out, normal grid current in; /archives//html/RTTY/2001-10/msg00138.html (9,545 bytes)
14. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: wa9als@starband.net (WA9ALS - John); Date: Fri, 5 Oct 2001 17:36:28 -0500; Their web page says 1500 watts carrier, 1 hour per FCC.; /archives//html/RTTY/2001-10/msg00139.html (8,311 bytes)
15. [RTTY] AL-1200 arcing during QRO RTTY contesting (score: 1): Author: w7ti@dslextreme.com (Bill Turner); Date: Sat, 06 Oct 2001 06:30:16 -0700; _________________________________________________________ I didn't know that. Over the phone, they have several times told me no limit. Bill, W7TI; /archives//html/RTTY/2001-10/msg00145.html (8,258 bytes)

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