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1. Re: [Amps] mobile amp (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Tue, 8 Mar 2005 00:22:32 -0600; No joke...I just bought a 1948 Ford today, and the radio is kaput. Thanks for the info on the vibrators and coils, Will! One never knows who is lurking out there in need of weird stuff!! (((73))) Ph; /archives//html/Amps/2005-03/msg00209.html (7,583 bytes)
2. Re: [Amps] Alpha 77Dx -Adding Grounded Grid Filament Choke (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Sat, 5 Mar 2005 14:18:52 -0600; Gerald, I buy mine from Allied Electronics. Siemens is now EPCOS. They are available in about 20 models, from 90 to 800 volts break-down. The highest price of the lot is $3.19. I use the EC-145 ($2.; /archives//html/Amps/2005-03/msg00117.html (9,377 bytes)
3. Re: [Amps] Alpha 77Dx -Adding Grounded Grid Filament Choke (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Sat, 5 Mar 2005 14:02:30 -0600; Siemens EC 145 98 is what I came up with for the YC-156. (((73))) Phil, K5PC _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman; /archives//html/Amps/2005-03/msg00116.html (9,783 bytes)
4. Re: [Amps] Alpha 77Dx -Adding Grounded Grid Filament Choke (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Fri, 4 Mar 2005 17:24:55 -0600; While you are 'in the area" check for heater voltage at the tube pins with a good RMS voltmeter. I have never found a 77DX/SX with the proper heater voltage. I assume the transformers were wound for; /archives//html/Amps/2005-03/msg00069.html (10,526 bytes)
5. Re: [Amps] AL-1500 Circuit Diagram (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Tue, 1 Mar 2005 20:47:13 -0600; 160 meters on the Alpha 77DX/SX has always appeared to me to be an after-thought. They can be made to work with several mods. One of them is, as Dr. Schmidt suggests, is a filament choke in the heat; /archives//html/Amps/2005-03/msg00014.html (9,341 bytes)
6. Re: [Amps] Shipping Damage (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Thu, 24 Feb 2005 15:03:52 -0600; As a retired pilot for a major package freight company, I have witnessed many incidents where package damage occurred during the sorting process. This is not a problem unique to one carrier...all fr; /archives//html/Amps/2005-02/msg00775.html (10,414 bytes)
7. Re: [Amps] AL-1200 vs AL-1500 (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Thu, 24 Feb 2005 13:45:55 -0600; I remember us talking about the 3CX1200's in you store when they first hit the market. You thought at that time that the tube would be the 4-1000A of the 21st century. I think time has proven you ri; /archives//html/Amps/2005-02/msg00768.html (8,700 bytes)
8. Re: [Amps] Fwd: Pi-L In-circuit Adjustment Question (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Wed, 23 Feb 2005 18:50:31 -0600; Right on David, but leave the tube in its socket. At least, put it back in place before you make the final installation of the taps on the coil. The larger the tube, the more the shape of the RF dec; /archives//html/Amps/2005-02/msg00703.html (9,638 bytes)
9. Re: [Amps] Fwd: Pi-L In-circuit Adjustment Question (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Mon, 21 Feb 2005 10:14:07 -0600; Okay boys and girls, IMO, there are several miss-statements in the above. Your homework for today is to identify them and correct them lest some of our newer readers take this as gospel and loose a b; /archives//html/Amps/2005-02/msg00648.html (10,397 bytes)
10. Re: [Amps] Pi-L In-circuit Adjustment Question (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Sat, 19 Feb 2005 15:14:58 -0600; Mike, Set the tune C and load C to the values from the charts or formulas. Do not touch them after they are set. Assuming that the L coil has been checked for proper value and installation, it is us; /archives//html/Amps/2005-02/msg00603.html (8,104 bytes)
11. Re: [Amps] Pi-L Check (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Thu, 17 Feb 2005 17:47:19 -0600; John, In the 23rd addition (and others) of the Bill Orr Handbook "Radio Handbook," on page 14-22 there is a chart (Figure 44) that shows cathode circuit values for grounded-grid amplifiers. Range is; /archives//html/Amps/2005-02/msg00567.html (7,730 bytes)
12. Re: [Amps] SB 200 Puzzler (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Fri, 11 Feb 2005 20:10:07 -0600; . It appears to me that It's picked up some added capacity on 40 and 75 meter positions and thats the reason the plate tuning capacitor is tuning to less capacity ( 20 mtr.area ) for resonance in the; /archives//html/Amps/2005-02/msg00443.html (8,203 bytes)
13. Re: [Amps] Two quick loading questions (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Thu, 10 Feb 2005 00:41:26 -0600; Full smoke out the door with an eye on the grids is the best way to tune a GG amp. KISS in full force. Bob Amen, Bob! I tune for full smoke out the door, then adjust the loading cap. until both the f; /archives//html/Amps/2005-02/msg00384.html (8,349 bytes)
14. Re: [Amps] Quick 220 outlet? (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Tue, 8 Feb 2005 17:53:52 -0600; Despite whatever stories anyone has ever heard about anyone else successfully detecting any voltage potential with their body, the fact remains that it is a dangerous and possibly lethal practice. Th; /archives//html/Amps/2005-02/msg00324.html (9,352 bytes)
15. Re: [Amps] Inductance Variations (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Tue, 8 Feb 2005 14:20:18 -0600; Next question is related in that tank circuits in most commercial amplifiers use a shorting switch to select the inductance values. Where as, the amp. circuit designs in ARRL Handbook, etc. use a non; /archives//html/Amps/2005-02/msg00317.html (8,406 bytes)
16. Re: [Amps] Quick 220 outlet? (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Mon, 7 Feb 2005 15:22:57 -0600; Look inside your distribution panel and you'll see that the breakers alternate between legs (which is also how/why 220V breakers work on two adjacent breaker locations). One difference is that 230v b; /archives//html/Amps/2005-02/msg00255.html (9,107 bytes)
17. Re: [Amps] High C out (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Fri, 21 Jan 2005 17:28:50 -0600; Well, I wasn't for sure as I cant decipher what he wants. He mentioned wanting to know how to increase the inductance by 300 nH, which squeezing the coil would raise it. In a Pi-L, the load C is in b; /archives//html/Amps/2005-01/msg00436.html (10,657 bytes)
18. Re: [Amps] INRUSH (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Sun, 26 Dec 2004 16:32:08 -0600; By the way, the filter is 2 units of 194uF @ 30KV and weigh around 200 pounds each. in my opinion the filter bank is too much oversized for a 3-phase powersupply even when no bridge rectifier is used; /archives//html/Amps/2004-12/msg00348.html (7,800 bytes)
19. Re: [Amps] Tuning (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Wed, 22 Dec 2004 18:31:41 -0600; Subject: Re: [Amps] Tuning "Why not do a bench test with a good dummy load and a wattmeter? Make a chart, and tune up in your favorite hangout area...." Because you need the antenna you want to use w; /archives//html/Amps/2004-12/msg00272.html (9,507 bytes)
20. Re: [Amps] Tuning (score: 1): Author: "Phil Clements" <philk5pc@tyler.net>; Date: Wed, 22 Dec 2004 13:04:26 -0600; Move the VFO up/down in frequency until your wattmeter reading decreases. That is fairly close to the limit. (for me anyway!) (((73))) Phil, K5PC -- Original Message -- From: "kwasny" <kwasny@netzero; /archives//html/Amps/2004-12/msg00264.html (8,274 bytes)

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