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Total 22 documents matching your query.

1. [Amps] TL922A and AL80A (score: 1): Author: tgeorgen at lsil.com (Georgens, Tom); Date: Wed Mar 19 00:55:37 2003; Hello All The TL922 manual says "DO NOT under any circumstance OPERATE your exciter in CW mode when the linear is in the SSB mode. Failure to head this warning may cause immediate, extensive damage t; /archives//html/Amps/2003-03/msg00699.html (8,352 bytes)
2. [Amps] TL922A and AL80A (score: 1): Author: w8ji at contesting.com (Tom Rauch); Date: Wed Mar 19 04:49:20 2003; in may The TL922, like the SB220, was designed when the power limit was 1kw CW DC plate input power. Power supplies and cooling systems were designed for power level, plus a safety factor. mA it Sur; /archives//html/Amps/2003-03/msg00700.html (9,809 bytes)
3. [Amps] TL922A and AL80A (score: 1): Author: 2 at vc.net (rlm); Date: Wed Mar 19 07:40:44 2003; The 922's HV-xfmr is ok with voice mode on the SSB tap and CW mode on the CW tap, however, since key-down/A? mode has about triple the current draw, the I^2 x R Cu-loss in the windings is substantia; /archives//html/Amps/2003-03/msg00701.html (10,783 bytes)
4. [Amps] TL922A and AL80A (score: 1): Author: 2 at vc.net (rlm); Date: Wed Mar 19 07:41:01 2003; ** True ** So the amplifier was designed beyond the tube's ratings? ** ... and remember, there is such thing as a VHF oscillation in a HF amplifier. ** Not according to the characteristic curves. **; /archives//html/Amps/2003-03/msg00702.html (11,358 bytes)
5. [Amps] TL922A and AL80A (score: 1): Author: n3ji at yahoo.com (Joe Isabella); Date: Wed Mar 19 09:50:51 2003; Since I run a '922, I have a question: The "quarter S-unit" isn't my concern. But would the added cooling + heavy duty XFMR provide added headroom? In other words, I know it won't affect the signal s; /archives//html/Amps/2003-03/msg00704.html (8,686 bytes)
6. [Amps] TL922A and AL80A (score: 1): Author: 2 at vc.net (rlm); Date: Wed Mar 19 10:32:46 2003; ** for RTTY contesting, yes. ** Operating the tubes within their linear region makes for good linearity. 3-500Z/8002 IMD is over 42db down, which is better than virtually all radios. ** It would be; /archives//html/Amps/2003-03/msg00708.html (9,445 bytes)
7. [Amps] TL922A and AL80A (score: 1): Author: W4EF at dellroy.com (Michael Tope); Date: Wed Mar 19 10:44:28 2003; We had a TL-922A at our college club station when I was an undergraduate. I don't recall running it in the CW position very often even though we operated a lot of CW. Being young and dumb we ran the; /archives//html/Amps/2003-03/msg00709.html (7,933 bytes)
8. [Amps] TL922A and AL80A (score: 1): Author: n3ji at yahoo.com (Joe Isabella); Date: Wed Mar 19 11:03:20 2003; Pete & others, First, thanks for the info. I'm not looking to increase the voltage over what it is (unless you mean the increase is from it not being loaded down so far). In the High V position, mine; /archives//html/Amps/2003-03/msg00710.html (10,753 bytes)
9. [Amps] TL922A and AL80A (score: 1): Author: tgeorgen at lsil.com (Georgens, Tom); Date: Wed Mar 19 13:39:49 2003; Thanks for the answers to my questions. What precipitated my question was a specific situation. I have a contest station in Barbados and I have a number of amplifiers down there. The main amps, a AL1; /archives//html/Amps/2003-03/msg00715.html (12,408 bytes)
10. [Amps] TL922A and AL80A (score: 1): Author: w8ji at contesting.com (Tom Rauch); Date: Wed Mar 19 20:31:26 2003; The only real way to answer that would be to measure the amplifier before and after the changes on voice, but you can be very sure any changes in IM performance would be minimal. The only real impro; /archives//html/Amps/2003-03/msg00716.html (8,797 bytes)
11. [Amps] TL922A and AL80A (score: 1): Author: w8ji at contesting.com (Tom Rauch); Date: Wed Mar 19 20:45:49 2003; AM requires the amp run 1/4 or less of the peak output that you load the amp for. The amp would have perhaps 25% efficiency under carrier conditions. At 500w input that's maybe 125w or so out, you c; /archives//html/Amps/2003-03/msg00717.html (8,847 bytes)
12. [Amps] TL922A and AL80A (score: 1): Author: w8ji at contesting.com (Tom Rauch); Date: Wed Mar 19 20:56:14 2003; IP quality is The AL80's have a good reputation, are reliable, and are definately not "splatter boxes" even when pushed a bit beyond ratings. The "400mA limit" is not a point where suddenly you will; /archives//html/Amps/2003-03/msg00718.html (9,444 bytes)
13. [Amps] TL922A and AL80A (score: 1): Author: 2 at vc.net (rlm); Date: Wed Mar 19 21:35:06 2003; My TL-922 produces c. 1400w-pep in either AM or SSB. In AM, the carrier level is c. 350w, and the indicated anode/plate current with or without modulation is 400mA. Tuneup for both involves sending; /archives//html/Amps/2003-03/msg00719.html (9,125 bytes)
14. [Amps] TL922A and AL80A (score: 1): Author: 2 at vc.net (rlm); Date: Wed Mar 19 21:38:13 2003; ** When a single 3-500Z is driven by 100w, IMD is not good. - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00720.html (9,747 bytes)
15. [Amps] TL922A and AL80A (score: 1): Author: W4EF at dellroy.com (Michael Tope); Date: Wed Mar 19 22:31:03 2003; You guys keep arguing about whether a single 3-500z can be run linearly at 550mA anode current in SSB service. Has anyone actually measured the difference in IMD for a single tube run at 400mA and 5; /archives//html/Amps/2003-03/msg00722.html (8,521 bytes)
16. [Amps] TL922A and AL80A (score: 1): Author: k7fm at teleport.com (k7fm); Date: Wed Mar 19 22:39:32 2003; Rich replied: "** Not in my copy of "Care and Feeding ..." Rich, it is in my copy. Page 68 of the third printing,1978, under 4.3.2 What Makes a Tube Linear. Seems to me that was one of the points of; /archives//html/Amps/2003-03/msg00723.html (8,101 bytes)
17. [Amps] TL922A and AL80A (score: 1): Author: w8ji at contesting.com (Tom Rauch); Date: Thu Mar 20 00:47:38 2003; I'm not sure why this stuff always gets so drawn out and personal or emotional, but of course IM has been tested Mike. When operated according to the manual, IM3 in the 80A was typically about -38 t; /archives//html/Amps/2003-03/msg00725.html (8,681 bytes)
18. [Amps] TL922A and AL80A (score: 1): Author: n3ji at yahoo.com (Joe Isabella); Date: Thu Mar 20 08:54:36 2003; Gents, I was on 3880 kHz this morning and I paid close attention to all the meters, and found this: HV (under load) = 1900V, Ip = 450mA, 855W DC Input, Ig ~125mA, RF output ~300W Carrier. The PEP was; /archives//html/Amps/2003-03/msg00732.html (10,285 bytes)
19. [Amps] TL922A and AL80A (score: 1): Author: stevek at jmr.com (Steve Katz); Date: Thu Mar 20 10:49:59 2003; [Steve Katz] I surely have no data, but I do have an AL80B on hand and it doesn't require anything close to 100W to drive to Ip >400mA. In fact, my exciter in its TUNE position, which runs half powe; /archives//html/Amps/2003-03/msg00738.html (9,022 bytes)
20. [Amps] TL922A and AL80A (score: 1): Author: 2 at vc.net (2); Date: Thu Mar 20 12:45:27 2003; ** How many watts of drive is needed to produce 550mA of I-plate/anode? - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2003-03/msg00739.html (8,771 bytes)

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