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1. [AMPS] True Or Not True #2 (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Fri, 07 Sep 2001 14:07:16 +0700; If your s-meter is sitting How many db increase for every one S-unit, using as factory standard ??. de YD1BIH _________________________________________________________________ Get your FREE download; /archives//html/Amps/2001-09/msg00094.html (8,780 bytes)
2. [AMPS] Schematic of HF Amplifire 4CX250B (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Tue, 11 Sep 2001 15:26:44 +0700; You can download from this site : http://i5uxj-2.cln.it/amp/schemi/pdf/7506039.pdf File size about 3MB in PDF Format. de YD1BIH To: <amps@contesting.com> _____________________________________________; /archives//html/Amps/2001-09/msg00198.html (11,404 bytes)
3. [AMPS] The Care and Feeding (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Wed, 16 May 2001 15:17:46 +0700; Any body knows website address, that publish a book of "The Care and Feeding of Power Grid Tubes", except of Eimac website that has not been updated since last two years. Firson - yd1bih ____________; /archives//html/Amps/2001-05/msg00301.html (6,741 bytes)
4. [AMPS] Dirty Output (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Mon, 21 May 2001 09:19:24 +0700; Hello.. I was building pre amp. to drive 4-400A in class AB1 for radio frequencies in 3.800 Khz. The pre amp is 6L6 in class A with passive grid input, and have tuned output in 3.800 Khz. The problem; /archives//html/Amps/2001-05/msg00368.html (7,318 bytes)
5. [AMPS] Dirty Output (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Mon, 28 May 2001 16:00:58 +0700; -- The problem solved, when I changing 1mh RF Choke with 4K7 Carbon resistor on this 6L6 Grid, thanks for all response that I have received from this reflector. de YD1BIH ___________________________; /archives//html/Amps/2001-05/msg00473.html (7,352 bytes)
6. [AMPS] Matching Input (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Wed, 04 Apr 2001 10:39:42 +0700; I am building Grounded Grid linear Amplifier with two EIMAC 3-500Z, and drive by my "813 exiter", approx 200 watt with 50 ohm load, in 80 meter band. I am not using matching input in 3-500Z Amplifier; /archives//html/Amps/2001-04/msg00043.html (7,223 bytes)
7. [AMPS] Floating Ground (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Wed, 04 Apr 2001 15:53:43 +0700; Why floating ground (ground and negative separated between 50 ohm resistor) always use in modern HV Power Supply, And why in stand by mode, tube also biasing for cut off voltage, and why not cutting; /archives//html/Amps/2001-04/msg00052.html (7,151 bytes)
8. [AMPS] Plate Impedance (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Wed, 25 Apr 2001 17:51:08 +0700; In SSB Amplifier, plate current have variation following voice modulated, How to determine plate impedance with varation in current flow. de YD1BIH ___________________________________________________; /archives//html/Amps/2001-04/msg00520.html (6,751 bytes)
9. [AMPS] Tube X-Ray Emission (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Fri, 02 Mar 2001 16:14:47 +0700; I was read in old tube warning massage that in tube electron emission contain a X-ray emission too. How this X-Ray emission intensity ?, is it dangerous when we are using large tube ??. Salam dari Ja; /archives//html/Amps/2001-03/msg00025.html (6,933 bytes)
10. [AMPS] Power Limit (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Mon, 19 Mar 2001 08:39:40 +0700; Any body can help, Our Goverment here in Indonesia, will change regulation for Amateur radio power limit, we need some input from various country about power limit in your country, inculde HF,VHF,UHF; /archives//html/Amps/2001-03/msg00165.html (6,860 bytes)
11. [AMPS] 3-500Z (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Mon, 19 Mar 2001 08:45:44 +0700; In my experience with same tube, When plate getting red with small fraction of plate current ma, probably something wrong with tube cathode bias, make sure cathode bias working properly. de Firson -; /archives//html/Amps/2001-03/msg00166.html (8,087 bytes)
12. [AMPS] Tube Shorting (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Fri, 23 Mar 2001 10:10:10 +0700; I have same problem with GU-80, I am taking car 40A battery, plus cable attach to control grid, and filamen lead attach to minus and short it only for a second. I think this is a gambling way, probab; /archives//html/Amps/2001-03/msg00205.html (8,023 bytes)
13. [AMPS] Two XFMR in parallel (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Wed, 17 Jan 2001 17:03:23 +0700; I have two unit transformer with different manufacturer, one of them are 1880 volt and 0.6A RMS secunder, and another are 1870 volt and 0.4A RMS secunder. Actual voltage when connected to AC line are; /archives//html/Amps/2001-01/msg00405.html (8,234 bytes)
14. [AMPS] Re: Two XFMRs Parallel... (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Thu, 25 Jan 2001 08:45:29 +0700; Thanks for you all for your help, that is very useful for me.... 73 Best Regard, Salam dari Jakarta Firson - YD1BIH _________________________________________________________________________ Get Your; /archives//html/Amps/2001-01/msg00597.html (7,940 bytes)
15. [AMPS] Fertility (score: 1): Author: firson@hotmail.com (Firson Maryutenli); Date: Tue, 30 Jan 2001 12:22:07 +0700; May be out of topic, Is there any research about HF High Power radiation to our human fertility. Firson - YD1BIH _________________________________________________________________________ Get Your Pri; /archives//html/Amps/2001-01/msg00702.html (7,564 bytes)
16. [AMPS] Zero Bias in GG Amp. (score: 1): Author: firson@hotmail.com (Firson, YD1BIH); Date: Thu, 02 Sep 1999 10:58:31 GMT; Thanks for Mr.Egen, Karlsson and Perzonka, for yours attention to my problem, by the way, almost old version Grounded Grid Amplifier using zero bias in their cathode, I don't know what limitation hap; /archives//html/Amps/1999-09/msg00010.html (7,268 bytes)
17. [AMPS] TB 4/1250 datasheet (score: 1): Author: firson@hotmail.com (Firson, YD1BIH); Date: Mon, 30 Aug 1999 03:06:26 GMT; I found used tube, manufactured by AMPEREX France, Type of the tube is TB 4/1250, I do not find a kind of this tube in ARRL handbook datasheet, any body know and give me information data sheet for th; /archives//html/Amps/1999-08/msg00339.html (6,974 bytes)
18. [AMPS] 4-400A On AB1 (score: 1): Author: firson@hotmail.com (Firson, YD1BIH); Date: Wed, 14 Jul 1999 03:36:42 GMT; Hi All, I am try to build linear amp using single 4-400A, I don't know, how much drive required for 4-400A in class AB1..Any body could describe me, how much is it ??. Firson - YD1BIH _______________; /archives//html/Amps/1999-07/msg00264.html (7,251 bytes)
19. [AMPS] 4-400A On AB1 (score: 1): Author: firson@hotmail.com (Firson, YD1BIH); Date: Wed, 14 Jul 1999 04:45:23 GMT; I am sorry, the configuration is, tuned grid input, 750 volt in screen, and 2500 volt in plate..Thanks in advance Firson YD1BIH To: <amps@contesting.com> _____________________________________________; /archives//html/Amps/1999-07/msg00266.html (8,364 bytes)
20. [AMPS] 4-400A On AB1 (score: 1): Author: firson@hotmail.com (Firson, YD1BIH); Date: Mon, 19 Jul 1999 06:06:00 GMT; Thanks for your kind attention to my problem,.... Now !! I have homebrewed exciter with 1 watt output using 6CL6 to drive my current linear amp using pair of 6146B, but in future I want to replace th; /archives//html/Amps/1999-07/msg00354.html (9,243 bytes)

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