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1. [Amps] Air Gap (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Mon, 17 Jan 2005 18:34:59 -0600; I am getting parts together for my first amp. I have 3, 4-1000a tubes ,chimneys ,sockets and fil transformers . I plan on a single tube amp for my first try , it will be for 15 and 20 meters. The pow; /archives//html/Amps/2005-01/msg00329.html (7,070 bytes)
2. RE: [Amps] Air Gap (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Mon, 17 Jan 2005 22:29:09 -0600; Thanks , I want to "make" as much of the parts as I can. I have retired early and money is short but I have a big junk box and I like to say I made this. I machined the rotors and stators for this ab; /archives//html/Amps/2005-01/msg00333.html (8,891 bytes)
3. RE: [Amps] Air Gap (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Tue, 18 Jan 2005 08:53:25 -0600; I understand things better after I build something, I think my skull is a little thick at times. That is why for my first amp will be a monoband for 15m and maybe 20m with a change in coils. If it wo; /archives//html/Amps/2005-01/msg00344.html (8,025 bytes)
4. RE: [Amps] Tetrodes in GG Configuration (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Wed, 19 Jan 2005 22:22:49 -0600; When I brought up a question the other day about the 4-1000a and GG amp is because I have one new tube and some others with just a few hours on them and it will be my first amp so I also want to use; /archives//html/Amps/2005-01/msg00386.html (9,731 bytes)
5. [Amps] New Variaic Question (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Sun, 30 Jan 2005 14:59:18 -0600; I am building my first amp , now starting on the power supply. It will have a 240v 10 amp Powerstat. I have a 4 pole "latching" relay that I think I will wire so it has a safety drop out , then a DPD; /archives//html/Amps/2005-01/msg00622.html (7,483 bytes)
6. RE: [Amps] New Variaic Question (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Sun, 30 Jan 2005 15:28:05 -0600; Wow , that's a lot of power , no wonder it pops my breakers , but when I do get it to run it shows almost no load until I switch in the rest of the system. So I will add a soft start to my 120v coil; /archives//html/Amps/2005-01/msg00625.html (9,163 bytes)
7. RE: [Amps] 10dB and propagation (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Sun, 6 Feb 2005 09:04:45 -0600; Do you know how I can get a map of the duct locations , I have never been lucky enough to live close to one ? Rich kd0zz I used to wonder how come I could use a tri-band beam, advertised at 8 db gain; /archives//html/Amps/2005-02/msg00193.html (7,636 bytes)
8. RE: [Amps] New FET's (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Wed, 9 Feb 2005 22:29:52 -0600; I just had to jump in on this, where I worked we did a lot of testing of parts for the military. When they request that each bolt to hold a tail on a airplane be machined to an extra close tolerance; /archives//html/Amps/2005-02/msg00377.html (8,053 bytes)
9. [Amps] shipping (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Thu, 24 Feb 2005 12:24:17 -0600; I had to add my 2 cents on this, my mom used to work at the main post office down town St. Louis. She always said not to over make a package as "fragile glass" because as they sort them they would ma; /archives//html/Amps/2005-02/msg00754.html (6,983 bytes)
10. [Amps] QRO ? (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Thu, 4 Aug 2005 22:17:05 -0500; I am thinking about building my first amp and was wondering if I could use a large tube ( 4-1000a ) at reduced voltage when I first start out and then as I build confidence replace the lesser parts w; /archives//html/Amps/2005-08/msg00138.html (7,089 bytes)
11. [Amps] Sort Start (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Tue, 9 Aug 2005 11:15:01 -0500; Gentleman, I have started bread boarding my power supply. So far I have it set for the filament transformer and fan to come on first, run for 3 ( adjustable ) min then kick in a relay for 0 to280v to; /archives//html/Amps/2005-08/msg00335.html (7,085 bytes)
12. [Amps] Soft Start (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Tue, 9 Aug 2005 22:05:54 -0500; Thanks for the help guys, and a special thanks to KK4MS for the link to RF parts showing the inrush protectors. http://www.rfparts.com/inrush.html Rich , kd0zz _______________________________________; /archives//html/Amps/2005-08/msg00358.html (6,410 bytes)
13. [Amps] Soft Start (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Fri, 12 Aug 2005 11:21:10 -0500; OK guys I made the subject soft start , but that about the only thing right this time. The resistor should be big enough , 50ohms 100w. It all worked one part at a time but when I hooked it all up to; /archives//html/Amps/2005-08/msg00439.html (7,623 bytes)
14. [Amps] Spike Caps (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Sat, 3 Sep 2005 12:25:43 -0500; My power supply is about complete, did a test run to 3200v DC, and no problem. It should be good for 4500+ @1amp. My question is that I have HV diodes blocks, ECG-548's and would it do any good (or h; /archives//html/Amps/2005-09/msg00022.html (6,278 bytes)
15. Re: [Amps] 4-1000 (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Sun, 11 Sep 2005 11:34:37 -0500; Jack, if and when your get good information on a 4-1000 amp I sure could use a picture or two of the input/output relay set up, I have seen it on a schematic where the input is on the far left and th; /archives//html/Amps/2005-09/msg00091.html (7,605 bytes)
16. Re: [Amps] 4-1000 Amp (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Mon, 12 Sep 2005 13:56:38 -0500; -- Dear Rich, 1. What anode voltage and current is your supply rated at? It is a transformer I had originally planned to use with a 8877 class tube but got the deal on the 4-1000's, it has 3600v ac s; /archives//html/Amps/2005-09/msg00101.html (7,662 bytes)
17. [Amps] Plate Cap (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Sun, 2 Oct 2005 15:53:02 -0500; After reading the thread on plate cap minimums, I thought I would list the photo of the var plate cap I finisher earlier this week. http://photos.groups.yahoo.com/group/rfamplifiers/vwp?.dir=/Parts+i; /archives//html/Amps/2005-10/msg00057.html (7,124 bytes)
18. [Amps] Good Ground on 160 (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Sat, 15 Oct 2005 14:08:35 -0500; But you must remember that the other end of the antenna system must be a vertical, with a LARGE capacitor hat when you use the well casing. Without a good capacitor hat most of the signal will go st; /archives//html/Amps/2005-10/msg00417.html (7,263 bytes)
19. [Amps] AC Wiring 400 amp (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Thu, 20 Oct 2005 11:23:30 -0500; Gentlemen, may I make an addition to the AC wiring notes. It took a little talking to the power company but I had them install a 400 amp transformer on my pole in front. It has a 380 amp commercial r; /archives//html/Amps/2005-10/msg00509.html (7,222 bytes)
20. Re: [Amps] 866 rectifiers (score: 1): Author: "Rich" <rdjmgmt@socket.net>; Date: Tue, 6 Dec 2005 08:56:01 -0600; Now you're talking, it brings back memories of my novice rig, a Johnson Valiant Viking, the blue glow of the 866 and the thump from the cluster of 6146's. I could feel it on the bench. Why did I get; /archives//html/Amps/2005-12/msg00045.html (8,318 bytes)

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