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21. Re: [Amps] HV Diodes (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Fri, 17 Oct 2014 08:57:30 -0400; A roller inductor is the last thing you want in a ham amp of desktop size anway. Ulvin Tremendus in Spain has the dual 8877's already. Carl KM1H we have been waiting on that dual 8877 amp with roller; /archives//html/Amps/2014-10/msg00113.html (10,925 bytes)
22. Re: [Amps] HV Diodes (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Fri, 17 Oct 2014 12:06:07 -0400; At that low power level that size roller is usually adequate but the moving parts wear and create intermittents. They become a maintenance headache for some owners. Its a cute little amp but it reall; /archives//html/Amps/2014-10/msg00120.html (12,980 bytes)
23. Re: [Amps] 3CX3000s (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Fri, 17 Oct 2014 16:08:46 -0400; Remote it in another room as can be done with the Henry 8K. OTOH at "legal" power not as much air is needed. (-; Carl KM1H Why one 3CX3000A7 amp? why not? If the 3CX-3000F7 is used, then NO socket is; /archives//html/Amps/2014-10/msg00131.html (9,148 bytes)
24. Re: [Amps] Solid State Amps (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Fri, 17 Oct 2014 17:56:27 -0400; Ive noticed over a wide swath of amp and other forums that SS is becoming more popular but seemingly misunderstood by most even more so than tube amps. The majority appear to be the newer generation; /archives//html/Amps/2014-10/msg00135.html (18,308 bytes)
25. Re: [Amps] Solid State Amps (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Fri, 17 Oct 2014 20:46:51 -0400; I didnt say anything about code so why do you want to bastardize the thread by including it? I didnt say anything about smarts, aka mental ability either. Many can run circles around both of us but h; /archives//html/Amps/2014-10/msg00144.html (21,810 bytes)
26. Re: [Amps] Solid State Amps (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Fri, 17 Oct 2014 20:57:02 -0400; When my folks moved out to Longg Island then merda was heard daily and many of my new friends had vowels for the last letter of the family name. I almost married a Del Pozzo and no she wasnt from Lon; /archives//html/Amps/2014-10/msg00145.html (20,590 bytes)
27. Re: [Amps] Solid State Amps (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Fri, 17 Oct 2014 21:02:53 -0400; Thanks Win, I was going to ask my #2 son who just retired from the USAF and is living in Garmisch for the translation but he was already in bed. He speaks German as a native and has decided to stay a; /archives//html/Amps/2014-10/msg00146.html (19,524 bytes)
28. Re: [Amps] solid state amps (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Fri, 17 Oct 2014 21:16:58 -0400; The market is for VHF and higher as there is little use at HF except for us poor hams. Look for devices built for the HF or low VHF ISM market that must meet stringent IMD specs. These have replaced; /archives//html/Amps/2014-10/msg00148.html (9,950 bytes)
29. Re: [Amps] AL-1200 Tuning Capacitor Range (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Sat, 18 Oct 2014 11:59:48 -0400; If the tank is resonating at "almost" unmeshed and there are two resonance points as you continue the rotation youre fine, leave it alone. Carl KM1H Thanks, both. Had I given this more than passing t; /archives//html/Amps/2014-10/msg00165.html (10,514 bytes)
30. Re: [Amps] HV Diodes (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Sat, 18 Oct 2014 12:27:57 -0400; Ive been told by several diode manufacturers that adding all that parallel resistor and capacitor crap, as they usually called it, could actually be bad for the circuit. It took decades before the AR; /archives//html/Amps/2014-10/msg00167.html (19,799 bytes)
31. Re: [Amps] Solid State Amps (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Sat, 18 Oct 2014 16:02:00 -0400; My NCL-2000 amplifier uses 8122 tubes. The day they fail, I will junk that amplifier, because NOS 8122 tubes are scarce and expensive. I just see them on eBay, offered for a starting bid of $750 for; /archives//html/Amps/2014-10/msg00173.html (10,281 bytes)
32. Re: [Amps] Fwd: Ten-Tec Titan 425 - input SWR high (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Sun, 19 Oct 2014 13:39:57 -0400; Pull one tube and stuff a rag in the hole. Go to 20M and drive with 20-30W and use the Tune and Load controls to peak the output at no more than 30ma Grid current. Write down the maximum power out. S; /archives//html/Amps/2014-10/msg00191.html (14,760 bytes)
33. Re: [Amps] Solid State Amps (or rather the NCL-2000...) (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Sun, 19 Oct 2014 15:54:19 -0400; You can also run it in the CW position for 3dB less heat (-; Carl KM1H Carl, There are alternatives Manfred. Get a pair of 8072's and some defunct 8122's. Machine off the finned radiator and push ont; /archives//html/Amps/2014-10/msg00195.html (11,967 bytes)
34. Re: [Amps] Solid State Amps (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Sun, 19 Oct 2014 15:59:16 -0400; With all your spare time how about coming up with a substitution chart plus what changes are needed for a wide range of RF devices that are no longer in production with some unobtainium? This would i; /archives//html/Amps/2014-10/msg00197.html (17,759 bytes)
35. Re: [Amps] MLA2500B on WARC bands (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Sun, 19 Oct 2014 17:15:32 -0400; Remove 4T from the top of the plate choke to remove the 12M resonance to the CB band. Remember that there is no tuned input in that amp so some rigs may fold back power. Also keeping the grid current; /archives//html/Amps/2014-10/msg00199.html (8,959 bytes)
36. Re: [Amps] Dentron Amp (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Sun, 19 Oct 2014 20:25:47 -0400; The MLA is more compact than the L but the Ameritron will fit left to right behind the tank coil. The input resistor has to be moved to under the relay and a 1/4" hole drilled in the steel center div; /archives//html/Amps/2014-10/msg00204.html (10,097 bytes)
37. [Amps] WTD: LK-800-TNY mod documentation (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Mon, 20 Oct 2014 18:22:03 -0400; This is the mod done by Bill Edwards, K4BWC (SK), at Omega Electronics; the amp itself now has a 120V power cord and the remote transformer box has a 240VAC cable. I have an amp in for service that I; /archives//html/Amps/2014-10/msg00210.html (7,503 bytes)
38. Re: [Amps] Comments solicited on AL-82 amp (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Sat, 25 Oct 2014 18:31:31 -0400; The AL-82 has had a long history of expensive tube arcs since the Chinese 3-500's dont hi-pot even close to the Eimacs and they arent gettered as well either in production. Later models added a surge; /archives//html/Amps/2014-10/msg00227.html (11,568 bytes)
39. Re: [Amps] Transformer needed (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Tue, 28 Oct 2014 10:50:38 -0400; Unless you will be doing RTTY contesting you can get by with a lot less current capability. The AL-811H transformer is hard to beat for price, includes a filament winding that can be tweaked for thos; /archives//html/Amps/2014-10/msg00231.html (8,190 bytes)
40. Re: [Amps] Alpha 8410 using 4CX1500B - why? (score: 1): Author: "Carl" <km1h@jeremy.qozzy.com>; Date: Wed, 29 Oct 2014 18:45:29 -0400; Welcome to tetrodes Manfred. Very few are designed for very low IMD and excessive, IMO, idle current is a way to appease the masses in the ham world. The 600W dissipation Russian GU-74B was fraudulen; /archives//html/Amps/2014-10/msg00242.html (14,365 bytes)

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