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References: [ +from:ohashi@ny.airnet.ne.jp: 20 ]

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1. [AMPS] DC Filaments??? (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Sat, 04 Nov 2000 10:26:39 +0900; Peter, Thank you very much for your nice information. As I mentioned in my previous post, I swap my 211's every half year. This is intended to reverse the DC polarity for each tube's filament. I was; /archives//html/Amps/2000-11/msg00050.html (8,327 bytes)
2. [AMPS] DC Filaments??? (score: 1): Author: ohashi@ny.airnet.ne.jp (Kazuo Ohashi); Date: Wed, 01 Nov 2000 10:24:23 +0900; Greetings AMP folks, from Japan ! I have no experiences to use DC to 813 but I am using DC for 211(GE's VT-4C) with thoriated-tungsten filament for my home brew stereo amplifier. I applied the revers; /archives//html/Amps/2000-10/msg00003.html (8,449 bytes)
3. [AMPS] 2KD-5 (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Tue, 02 Nov 1999 22:25:18 +0900; Hello, I have added 20cm length steel wire with 1 mm dia in series for the filament of 3-500Z in my 2KD-5. Resulting the voltage became just 5.0V. It was 5.5V before steel wire added. '73 de JA2DHC/1; /archives//html/Amps/1999-11/msg00070.html (7,485 bytes)
4. [AMPS] 2KD-5 (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Tue, 02 Nov 1999 23:30:55 +0900; My 2KD-5 is an EXPORT VERSION for Japan. The primary winding is just 200V. TNX Rich, Stainless wire parasti suppressor works fine. '73 de JA2DHC/1 Kazuo Ohashi QTH: Fujisawa, Kanagawa, Japan PBBS: JA; /archives//html/Amps/1999-11/msg00074.html (7,543 bytes)
5. [AMPS] Alminum Capacitor (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Thu, 16 Sep 1999 00:03:28 +0900; Greetings from Japan ! I got 8 pcs of Aluminum Capacitors (Not used JUNK) at Japanese HAM FAIR last month. The printing on the capacitor is as follows; 560uF 450V, 105 degree C, MKH Nippon Chemicon S; /archives//html/Amps/1999-09/msg00122.html (7,354 bytes)
6. [Re: [AMPS] Dentron MLA2500 Question/s] (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Thu, 16 Sep 1999 23:08:16 +0900; Hello folks! I have an MLA-2500B (serial#:3458) which does not have any tuned input inside. I hear MLA-2500 did not have low voltage tap of 600V on the xfmr. The full winding is for 800V. '73 de JA2D; /archives//html/Amps/1999-09/msg00135.html (7,245 bytes)
7. [AMPS] Re: Alminum Capacitor (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Thu, 16 Sep 1999 23:17:24 +0900; Folks, VY TNX ! Today, I found similar kind of capacitor was used in a switching power supply for PC. It is 100uF 450V and same manufacturer, grade and exterior. The power supply is 100W capability.; /archives//html/Amps/1999-09/msg00136.html (7,143 bytes)
8. [AMPS] 3CX300A1 for AB1 GG (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Tue, 27 Jul 1999 21:11:20 +0900; Greetings from Japan!! I have an MLA-2500B working well, however worry about degradation of the tubes of 8875, wonder triode. It's difficult to find spare tubes now. I am considering conversion to us; /archives//html/Amps/1999-07/msg00516.html (8,512 bytes)
9. [AMPS] 3CX300A1 for AB1 GG (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Tue, 27 Jul 1999 23:12:04 +0900; Tnx for prompt res. Yes, I know these two articles, but I like GG amp instead of GC. '73 de JA2DHC/1 Kazuo Ohashi QTH: Fujisawa, Kanagawa, Japan PBBS: JA2DHC@JL1ZND.11.JNET1.JPN.AS WebPage: http://ww; /archives//html/Amps/1999-07/msg00519.html (8,309 bytes)
10. [AMPS] 3CX300A1 for AB1 GG (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Tue, 27 Jul 1999 23:36:21 +0900; I think high impedance bias circuit (about 1-5Kohm) can secure from over drive of G1, as positive region swing generates more bias voltage. '73 de JA2DHC/1 Kazuo Ohashi QTH: Fujisawa, Kanagawa, Japan; /archives//html/Amps/1999-07/msg00521.html (8,381 bytes)
11. [AMPS] 3CX300A1 for AB1 GG (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Wed, 28 Jul 1999 00:21:55 +0900; Very quick response !! You are right if no ALC is used. My idea assumes 1-10 mA grid current (yes, it is little bit AB2), but ALC reduces driving power from the excitor, resulting total IMD is not so; /archives//html/Amps/1999-07/msg00526.html (8,472 bytes)
12. [AMPS] parasitic suppresser (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Sat, 22 May 1999 20:42:24 +0900; I found burned parasitic suppresser in my Henry 2KD-5. The silver plated tape coil looks OK but two resistors inside of the coil were completely broken. I made new parasitic suppresser which was refe; /archives//html/Amps/1999-05/msg00279.html (7,213 bytes)
13. [AMPS] HV Capacitor becoming bad ? (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Sat, 06 Feb 1999 12:29:49 +0900; HV meter of my Henry 2KD-5 shows strange. Immediate after POWER ON, indicates 3.0KV and moving up to 3.2 KV 2 minutes later at stand-by state (no idle current to 3-500Z x2). Is this a sign of bad HV; /archives//html/Amps/1999-02/msg00198.html (7,229 bytes)
14. [Fwd: [AMPS] DENTRON MLA 2500 JUMPER SETIINGS FOR 117V] (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Sun, 13 Dec 1998 23:24:55 +0900; This is a multi-part message in MIME format. --713958128701EAA23093C706 Content-Type: text/plain; charset=iso-2022-jp Content-Transfer-Encoding: 7bit Hello AMP folks from Japan!! I have an MLA-2500B; /archives//html/Amps/1998-12/msg00211.html (9,887 bytes)
15. [Fwd: [AMPS] DENTRON MLA 2500 JUMPER SETIINGS FOR 117V] (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Sun, 13 Dec 1998 23:24:29 +0900; This is a multi-part message in MIME format. --763CF7B53D9D6159A531CBA1 Content-Type: text/plain; charset=iso-2022-jp Content-Transfer-Encoding: 7bit Hello AMP folks from Japan!! I have an MLA-2500B; /archives//html/Amps/1998-12/msg00212.html (9,886 bytes)
16. [AMPS] Para OSC ? (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Sun, 13 Dec 1998 23:32:29 +0900; My Henry 2KD-5 recently became to show paraosc if IP exceeds over 400mA. What are considerable causes? Degradation of 4-500A? '73 de JA2DHC/1 Kazuo Ohashi QTH: Fujisawa, Kanagawa, Japan PBBS: JA2DHC@; /archives//html/Amps/1998-12/msg00213.html (6,967 bytes)
17. [AMPS] Para OSC ? (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Mon, 14 Dec 1998 07:24:10 +0900; Thanks Carl. Operating Freq is 14MHz. I need to check it again. IP meter shows 400mA even no exciting input from FT-980 once voice input exceeds 400mA. I couldn't hear ARC SOUND. '73 de JA2DHC/1 Kazu; /archives//html/Amps/1998-12/msg00224.html (7,166 bytes)
18. [AMPS] Line input wiring (score: 1): Author: ohashi@ny.airnet.ne.jp (ohashi); Date: Wed, 23 Dec 1998 00:21:47 +0900; Greetings from Japan!! My DENTRON MLA-2500B uses 3 wires AC input cord, 2 wires for AC 234V and the third wire is for chassis GND which is connected to the GND pin out of 3 pin in a wall outlet Regar; /archives//html/Amps/1998-12/msg00324.html (8,661 bytes)
19. [AMPS] ALC from SB-200 reduces FT-900 power on CW (score: 1): Author: ohashi@ny.airnet.ne.jp (Kazuo Ohashi); Date: Thu, 24 Sep 1998 23:00:37 +0900; Greetings from Japan!! I am using FT-980 & Henry 2KD-5. I think Yaesu's ALC is sensitive and shows similar phenomena to W0OPW's. I added a ZENER DIODE at ALC wire between amp and FT-980 in series. Th; /archives//html/Amps/1998-09/msg00258.html (8,706 bytes)
20. [AMPS] Dentron ML-2500 (score: 1): Author: ohashi@ny.airnet.ne.jp (Kazuo Ohashi); Date: Sun, 30 Aug 1998 13:29:08 +0900; Greeting from Japan!! ** In reply to shane@icu2.net ** I have an MLA-2500B with a pair of 8875 which still have 800W PEP output on 14MHz band. 3 month ago, my MLA-2500B happened to make layer short i; /archives//html/Amps/1998-08/msg00246.html (8,404 bytes)

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