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Total 34 documents matching your query.

1. [Amps] Resonance in PiNetworks (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Tue May 27 08:40:59 2003; The following facts about Pi Networks, especially those in typical HF power amplifiers, can be readily deduced by analyzing the circuit using straightforward circuit theory. 1. The network transfer f; /archives//html/Amps/2003-05/msg00205.html (8,247 bytes)
2. [Amps] modern 811 designs? (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Mon Apr 7 11:23:49 2003; Dan: Someone suggested that you use 8x811A in parallel. Before starting to punch out the holes for all of those sockets (not to mention the 200W filament transformer) I would suggest you consider the; /archives//html/Amps/2003-04/msg00064.html (8,957 bytes)
3. [Amps] QRO Balun? (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Tue Apr 15 12:58:07 2003; I have read the comments on the use of an RF transformer to step up the output impedance of the PINET simply for the purpose of trying to get away with an undersized loading capacitor. This sounds li; /archives//html/Amps/2003-04/msg00155.html (7,922 bytes)
4. [Amps] QRO Balun? (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Tue Apr 15 14:38:28 2003; Phil: I agree with your overall opinion that this was an economic tradeoff. However, you are oversimplifying a major point, which was what aroused my attention. That is the issue of power loss. The c; /archives//html/Amps/2003-04/msg00157.html (8,750 bytes)
5. [Amps] QRO Balun? (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Tue Apr 15 15:14:29 2003; Pete: Yes, restricting the transformer to <4MHZ makes a big difference in its design. It can make a HUGE difference. Unfortunately, as happens way too frequently here, people who post the original in; /archives//html/Amps/2003-04/msg00158.html (8,878 bytes)
6. [Amps] Central Electronics 600L (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Sun Apr 20 08:30:47 2003; I am trying to find some info on the RF transformers used in this unusual amp. Contrary to what I have heard, it was not a fully broadband amp. It has bandswitched transformers for each band (80-10).; /archives//html/Amps/2003-04/msg00191.html (6,879 bytes)
7. [Amps] Fwd: IM and big amps (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Mon Mar 3 20:11:20 2003; /archives//html/Amps/2003-03/msg00079.html (6,072 bytes)
8. [Amps] 8877s, ETO and the General Electric Contract (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Tue Mar 4 07:36:46 2003; Dave: Thank you for sharing some meaningful data to help counteract some of the local QRM. It also helps to support the notion that much of the data that is being passed off as fact in these parts, b; /archives//html/Amps/2003-03/msg00092.html (8,405 bytes)
9. [Amps] Solid State Amps: 1500 watts is cheap if . . . (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Tue Mar 4 09:19:58 2003; not support the gross waste of channel space that occurs with AM and FM. 10MHZ, we will require MOSFETS with t(on)+t(store)+t(off) of well under 25nS. What device would you recommend that we use to; /archives//html/Amps/2003-03/msg00101.html (7,211 bytes)
10. [Amps] IM big amps (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Tue Mar 4 10:00:24 2003; I am puzzled by your comment about the best radio/amp combos are those requiring 100%......... As stated, the comment's intent is not clear, so how about first clearing that up? It could mean simply; /archives//html/Amps/2003-03/msg00103.html (7,843 bytes)
11. [Amps] IM Distortion (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Wed Mar 5 10:15:57 2003; Ian: I read your description of the GW4RFX measurments, which strike me as being a quite practical approach to estimating splatter. Yes, this procedure could readily be codified and performed with mo; /archives//html/Amps/2003-03/msg00173.html (8,124 bytes)
12. Fwd: [Amps] Why hasn't solid state replaced tubes? (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Wed Mar 5 11:39:56 2003; /archives//html/Amps/2003-03/msg00186.html (8,898 bytes)
13. [Amps] Re: IM Distortion (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Wed Mar 5 13:15:18 2003; Ian: I totally agree with everything you say, especially the technical issues. As I have preached many times, the real problem(s) appear when we attempt to reduce complex technical phenomena to one-l; /archives//html/Amps/2003-03/msg00196.html (12,600 bytes)
14. [Amps] Re: IM Distortion (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Thu Mar 6 08:25:22 2003; Ian: There are a few very technical points to consider here (that actually do affect the relavence of all of this) and I think it best we discuss it offline. If we come to any earth-shaking conclusio; /archives//html/Amps/2003-03/msg00253.html (8,761 bytes)
15. [Amps] Transformer and Inductor theory (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Sun Mar 9 21:06:56 2003; The problems with the transformer debate are primarily due to an incorrectly applied simpification: The 'transformer rule', that the secondary voltage equals N times the primary voltage. It is only v; /archives//html/Amps/2003-03/msg00407.html (7,081 bytes)
16. [Amps] Transformer and Inductor theory (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Mon Mar 10 08:03:15 2003; Rich: Just a few added notes about modern, commercial ignition systems (label that "Passenger Car/Truck"), with which I have had intimate dealings (but not relations) thru my engineering company. Alt; /archives//html/Amps/2003-03/msg00420.html (9,522 bytes)
17. [Amps] AL-80B questions (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Mon Mar 10 08:29:03 2003; Rich: Send one of those suppressors and I will do a thorough measurement. Let's stop all the hand waving and get some real numbers. It would also be helpful to make one identical to the kryptonite on; /archives//html/Amps/2003-03/msg00421.html (9,359 bytes)
18. [Amps] New PINET Software (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Mon Mar 10 09:12:05 2003; I have just finished a sequence of updates/enhancements to the Pi Netwotk analyzer program which I have developing. The response to the initial version was far better than I anticipated, encouraging; /archives//html/Amps/2003-03/msg00422.html (9,768 bytes)
19. [Amps] AL-80B questions (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Tue Mar 11 10:01:41 2003; Rich: My statements about the RF resistance are results of simple application of the "theory" of RF resistance as stated in Terman. I accept it as the authority, despite its age. If you want to dispu; /archives//html/Amps/2003-03/msg00445.html (10,025 bytes)
20. [Amps] Public Apology (score: 143): Author: RFlabnotes at aol.com (RFlabnotes@aol.com); Date: Tue Mar 11 11:21:24 2003; To all readers of this list: A few days ago I posted a comment about some faulty data in ON4UN's book. Within 5 minutes of hitting ENTER, I knew that I had done slightly wrong. I stand by my comments; /archives//html/Amps/2003-03/msg00448.html (7,484 bytes)

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