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41. [AMPS] parasitic suppressors (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Sat, 13 Dec 1997 00:39:53 -0600; Small is a very general term...compared to what? With > 4 Joules @ 50 volts flowing, small Eimac tube wires are small enough to be zapped, according to Eimac. "Thoriated tungsten filaments are capabl; /archives//html/Amps/1997-12/msg00266.html (12,758 bytes)
42. [AMPS] 4-1000 Screen Voltage (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Sat, 13 Dec 1997 09:39:55 -0600; There was a construction article for an amp of this in the January 1974 issue of Ham Radio by W4OQ. I built the amp and used it for a while years ago. If you will pass along details, such a what the; /archives//html/Amps/1997-12/msg00270.html (7,848 bytes)
43. [AMPS] 4-1000 Screen Voltage (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Sat, 13 Dec 1997 18:24:19 -0600; K5PC wrote: Sorry...typo...440ma IP is the best my 100 watt exciter will do with 6000 volts on the plate. The efficiency is 58% because the B&W 850A tank coil is not correct for a plate load this hig; /archives//html/Amps/1997-12/msg00279.html (7,677 bytes)
44. [AMPS] Re: Storing/Operating Tubes Horizontally (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Mon, 24 Nov 1997 20:54:43 -0600; I was always told the reason most glass Eimac tubes and later post/RCA 811A's cannot be stored or operated horizontally has nothing to do with the filament. It is the strength of the material that h; /archives//html/Amps/1997-11/msg00347.html (7,932 bytes)
45. [AMPS] Meter bezel for Alpha 77 SX/DX (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Sun, 12 Oct 1997 13:31:09 -0500; 99% of all Alpha 77 parts are still sold off the shelf, Paul. The meters are made by Modutec. Metermaster is my dealer for them in Houston, TX. (((73))) Phil K5PC -- FAQ on WWW: http://www.contesting; /archives//html/Amps/1997-10/msg00070.html (7,705 bytes)
46. [AMPS] Bird Thruline Line Section Question (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Wed, 15 Oct 1997 20:58:04 -0500; I have a Bird part number 4522-002-5 50 ohm line section that did not come with any meters. What is the correct meter movement to use with this device? Does anyone have Bird's telephone number? (((73; /archives//html/Amps/1997-10/msg00090.html (7,623 bytes)
47. [AMPS] Bird Line Section Follow-up (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Thu, 16 Oct 1997 10:22:40 -0500; Thanks to all for your help with the meters etc. I talked to Bird today, and the meters are indeed 30 ua. They are 3.5 inch round meters; same as used in the model 43 unit. The part number is 2080-00; /archives//html/Amps/1997-10/msg00097.html (6,981 bytes)
48. [AMPS] The Emtron DX2 amp: A 50ohm 50 Watt resistor in B+? (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Fri, 17 Oct 1997 00:28:35 -0500; That is Svetlana's recommended value for that tube. You never want this resistor to open during an event. 10 ohms is ok up to about 3 kv. I am running 20 ohms on my Alpha 77SX with good results. (((7; /archives//html/Amps/1997-10/msg00102.html (8,881 bytes)
49. [AMPS] The Emtron DX2 amp: A 50ohm 50 Watt resistor in B+? (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Fri, 17 Oct 1997 13:03:36 -0500; I do not! I have to pay "retail" for my tubes. It is always best to be conservitive. Most modern day designs are hanging on the ragged edge on component parts at the 1500 watt level. That is correct.; /archives//html/Amps/1997-10/msg00112.html (10,615 bytes)
50. [AMPS] The Emtron DX2 amp: A 50ohm 50 Watt resistor in B+? (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Sun, 19 Oct 1997 13:24:24 -0500; Not shrapnel, Chris. The tremendous amonnt of power available in such a small space can actualy vaporize internal windings and ruin bearings in the blower. Putting a copper screen over the blower out; /archives//html/Amps/1997-10/msg00118.html (9,877 bytes)
51. [AMPS] Perfect Amplifier (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Mon, 01 Sep 1997 22:59:09 -0500; IMO, number one on the list with a ceramic tube amp is grid-trip protection. snip... Not too bad in the Colonies any more...$25-$35 @ flea markets and re.radio.swap. A good point was made by Rich. Ma; /archives//html/Amps/1997-09/msg00022.html (13,919 bytes)
52. [AMPS] silver plating (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Wed, 03 Sep 1997 11:22:47 -0500; Peter: I have always read and been lead to believe that it is the aging process that makes the difference. Dirty copper conducts less than clean copper, but dirty silver plated copper conducts about; /archives//html/Amps/1997-09/msg00056.html (8,414 bytes)
53. [AMPS] 8877 Parasitic Suppression Requirements (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Wed, 03 Sep 1997 14:18:57 -0500; Hi Rod, Not true at all. You are playing Russian Roulette with that AL-1500. The layout has a lot to do with Ameritron getting by without a suppressor. All transmitting tubes known to man require the; /archives//html/Amps/1997-09/msg00060.html (8,949 bytes)
54. [AMPS] SB-220 continued (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Sat, 6 Sep 1997 09:20:25 -0500; Swap the tubes in their sockets. Does the problem stay with the suspect tube? If it does, replace the tube that shows color in stby. GL! (((73))) Phil, K5PC -- FAQ on WWW: http://www.contesting.com/a; /archives//html/Amps/1997-09/msg00114.html (8,075 bytes)
55. [AMPS] Linear with 4CX800A (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Sat, 6 Sep 1997 23:50:42 -0500; snip...... So far, so good.....but throwing stones from the protection of a glass house is not good operatinf practice, methinks. Absolutely correct.....several numbers to "plug in here".... You just; /archives//html/Amps/1997-09/msg00134.html (13,161 bytes)
56. [AMPS] cores (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Fri, 12 Sep 1997 12:39:45 -0500; Alpha has been using them for years, Peter. The 77 series uses stacked cores for 80 and 160 meters in the pi, as well as 20-160 meters in the L. 4500 watts is no problem, but it would take a third on; /archives//html/Amps/1997-09/msg00279.html (7,534 bytes)
57. [AMPS] AUTEK RF-1 (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Mon, 22 Sep 1997 10:07:10 -0500; I have both the Autek and the Almost All Digital Electronics L/C Meter II. The L/C Meter II is far superior to the Autek, and much easier to use. Almost All Digital Electronics is at (206)351-9316, o; /archives//html/Amps/1997-09/msg00349.html (7,311 bytes)
58. [AMPS] Alpha 77 amps (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Sun, 03 Aug 1997 04:54:50 -0500; You are correct, Peter. Only the Alpha 77DX and SX's have 160 meter capability, and it was an afterthought to say the least. added, Actually, it was the original Peter Dahl 50 mfd @ 5kv replacement c; /archives//html/Amps/1997-08/msg00019.html (11,441 bytes)
59. [AMPS] Alpha 77 amps (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Sun, 03 Aug 1997 14:54:07 -0500; As I stated in earlier posts, 160m was truly an afterthought on the 77DX/SX's. A pair of the same doorknobs (858S's) are used in the plate block. The current through them on 10m is far in excess of t; /archives//html/Amps/1997-08/msg00023.html (9,734 bytes)
60. [AMPS] Good Source For R.F. Rated Doorknob Caps. (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Mon, 04 Aug 1997 10:55:42 -0500; The Davilyn Corp. in N. Hollywood, Ca. has lots of big amp parts. They have a catalog available. The 858 type 1000pf and 500pf @ 7.5kv doorknobs are $8.00 each. They also have HiQ brand caps 2000-500; /archives//html/Amps/1997-08/msg00033.html (7,812 bytes)

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