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Total 226 documents matching your query.

21. Re: [Amps] Bad tubes from Ebay (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Thu, 28 Sep 2006 20:38:47 -0500
Ok neat, I stand corrected. No BeO I'm glad posters here have been able to buy and use tubes from all sorts of sources. That's great. I'll tell you this just isn't the case with everybody. How do you
/archives//html/Amps/2006-09/msg00348.html (10,770 bytes)

22. Re: [Amps] shipping damage (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Fri, 29 Sep 2006 21:48:34 -0500
There you go shipping business by ham for hams. For $1000 a day I'll drive any ham gear from any place USA to any other place USA. Guaranteed to get there in one piece. Rattle NOT OK. I'll even do it
/archives//html/Amps/2006-09/msg00374.html (8,027 bytes)

23. Re: [Amps] shipping damage (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Fri, 29 Sep 2006 22:37:57 -0500
NO Pack to take a 4 foot drop to its head. A friend bought a 3K Classic X from a California ham. The seller took the amplifier to the loading dock at his business, shipping dock staff was to palletiz
/archives//html/Amps/2006-09/msg00376.html (8,267 bytes)

24. Re: [Amps] "10 Meter Ban" to be lifted ... (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Thu, 12 Oct 2006 14:15:57 -0500
I spent several years of my life as one of the "authorized" handful doing 77SX conversions. We had quite the assembly line running at one time. My first SX arrived in three boxes. The big crate, the
/archives//html/Amps/2006-10/msg00095.html (11,282 bytes)

25. Re: [Amps] "10 Meter Ban" to be lifted ... (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Thu, 12 Oct 2006 15:33:22 -0500
HAHAHA, Any of you guys actually run amplifiers? You guys plug them into 120 or what? Yeah I'm feisty today. A correctly ran 8877 will exactly put out 2500 watts... It will put exactly 1500 watts int
/archives//html/Amps/2006-10/msg00100.html (9,612 bytes)

26. [Amps] 1000 Watt Limit to 1500 OUT (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Sun, 15 Oct 2006 14:47:01 -0500
The old legal limit was 1000W DC as measured on the meters. There was no written PEP number. This was something "The marketing department" came up with to make things sound bigger. The SSB position o
/archives//html/Amps/2006-10/msg00148.html (11,364 bytes)

27. Re: [Amps] 1000 Watt Limit to 1500 OUT (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Sun, 15 Oct 2006 20:36:25 -0500
That is correct Not so hoakie but very practical. The ssb position on those amps like the SB220, Drake etc. raised the plate voltage and plate current to maintain the same plate load impedance that y
/archives//html/Amps/2006-10/msg00152.html (12,424 bytes)

28. Re: [Amps] Peak Power (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Mon, 16 Oct 2006 07:53:34 -0500
**At that point the FCC decided to establish a rule of +125% positive modulation peaks. And for ham radio... What is the maximum percentage of modulation allowed in a class C plate modulated AM trans
/archives//html/Amps/2006-10/msg00165.html (8,829 bytes)

29. [Amps] THE WRECK (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Mon, 16 Oct 2006 08:08:00 -0500
This is off topic, but needs to be shared. I'm a bit stressed. My great family day and construction of my second six meter beam was disturbed by the sound of two 18 wheelers doing a head on collision
/archives//html/Amps/2006-10/msg00167.html (8,277 bytes)

30. Re: [Amps] Peak Power (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Mon, 16 Oct 2006 11:28:03 -0500
You make some interesting points Hal, Sort of funny that my bud was cited by them OPERATING his transmitter not him. While he had a Bird 43 (what the feds consider the only real wattmeter) his was no
/archives//html/Amps/2006-10/msg00177.html (11,883 bytes)

31. Re: [Amps] Fixed Transmitting Capacitors: REVISITED (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Tue, 17 Oct 2006 17:03:08 -0500
This is a great question and the answer is pretty simple but not too obvious. How can the same part be trusted in an amp? It isn't that the capacitor is of low value or quality. It's the current rati
/archives//html/Amps/2006-10/msg00189.html (10,947 bytes)

32. Re: [Amps] Testing amp with no air flow (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Thu, 19 Oct 2006 08:07:35 -0500
About 30 seconds Then PHZIT... Seriously, there's no spec for that because you aren't supposed to do it. Reason, you have a 150 watt light bulb in 1/16th the amount of space of a 150 watt light bulb.
/archives//html/Amps/2006-10/msg00193.html (9,719 bytes)

33. Re: [Amps] Testing amp with no air flow (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Thu, 19 Oct 2006 08:10:04 -0500
Actually that's 50W but the same deal I will soom be ready to apply power for the first time to a homebrew 8877 amp. I need to make adjustments under the chassis with the tube filament lit and was wo
/archives//html/Amps/2006-10/msg00194.html (8,961 bytes)

34. [Amps] Missused words (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Thu, 19 Oct 2006 08:19:30 -0500
Sorry for the misused words, I just noticed the "Corrections" Microsoft Word's autocorrect makes to my posts. I suppose I misspell and it fixes with its favorite word. I'm going to have to reread mor
/archives//html/Amps/2006-10/msg00195.html (6,830 bytes)

35. Re: [Amps] Testing amp with no air flow (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Thu, 19 Oct 2006 21:24:44 -0500
OK so here's what we've done to provide potential ways to safeguard the tubes and tweak the bottom side. 1. Wife's hairdryer at base or fins running on cold. 2. Wife's vacuum / shop vac sucking throu
/archives//html/Amps/2006-10/msg00208.html (12,447 bytes)

36. Re: [Amps] Testing amp with no air flow (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Fri, 20 Oct 2006 10:55:20 -0500
Yes the YC-156 is a huge Brutus tube. One with 3CX15K internals. But also a 15V 15 amp filament (a 225 watt light bulb) If that had been an older designed tube like say a 3CX3000 the anode could have
/archives//html/Amps/2006-10/msg00215.html (8,034 bytes)

37. Re: [Amps] More information for "What NOT to buy".. (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Mon, 23 Oct 2006 13:10:39 -0500
I think its pretty hard to beat a Drake L4B for a starter amp. They were built pretty well. The only weak link in the thing is really the Power supply caps as most need replacing due to age at this t
/archives//html/Amps/2006-10/msg00247.html (9,050 bytes)

38. Re: [Amps] More information for "What NOT to buy".. (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Mon, 23 Oct 2006 13:30:59 -0500
BOOM. Hi Clint, Here's a radical question for you to ponder: WHY NOT HOMEBREW YOUR OWN LINEAR AMPLIFIER? If you're serious about wanting "...to learn", you'll do just that, and in spades too! ~73~ Ed
/archives//html/Amps/2006-10/msg00249.html (7,780 bytes)

39. Re: [Amps] More information for "What NOT to buy".. (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Mon, 23 Oct 2006 19:18:31 -0500
Hi Bud, all. Lets face it the SB-220 has been the workhorse of ham radio for 30 years. It was cheap, compact and popular. However, the SB-220 was a modified cheapened up version of the L4 design. Bad
/archives//html/Amps/2006-10/msg00258.html (11,339 bytes)

40. Re: [Amps] 3CX3000 Tuned Input Calibration (score: 1)
Author: "Robert B. Bonner" <rbonner@qro.com>
Date: Thu, 26 Oct 2006 12:43:57 -0500
BOB, Sorry I didn't respond to this post earlier, the input impedance of a 3 BY 3 is closer to 35 OHMS if I remember correctly. While this resistor procedure will get you very close it takes tweaking
/archives//html/Amps/2006-10/msg00287.html (9,458 bytes)

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