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1. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: af4mp at mindspring.com (Zyg Skrobanski); Date: Mon Mar 3 15:06:10 2003; All new AM broadcast transmitters are now solid state, as well as many FM and TV transmitters too. Please check out R. F. Electronics at: http://users.aol.com/rfelectron/rfelect.htm -- Zyg AF4MP Rosw; /archives//html/Amps/2003-03/msg00069.html (8,952 bytes)
2. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: af4mp at mindspring.com (Zyg Skrobanski); Date: Mon Mar 3 15:20:38 2003; Ouch, my apologies, I didn't know they were that bad! -- Zyg AF4MP Roswell GA USA; /archives//html/Amps/2003-03/msg00072.html (8,697 bytes)
3. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: af4mp at mindspring.com (Zyg Skrobanski); Date: Mon Mar 3 19:58:28 2003; Does the TS2000 have a transmitter with bad IMD? What's the problem? -- Zyg AF4MP Roswell GA USA; /archives//html/Amps/2003-03/msg00078.html (8,829 bytes)
4. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: af4mp at mindspring.com (Zyg Skrobanski); Date: Mon Mar 3 20:59:32 2003; How about the Icom IC-PW1 solid state amplifier? Output power: CW, RTTY: 1 kW at 180 - 264 V AC; 500 W at 90 - 132 V AC input SSB 1 kW PEP at 180 - 264 V AC; 500 W PEP at 90 - 132 V AC input Driving; /archives//html/Amps/2003-03/msg00080.html (8,744 bytes)
5. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: af4mp at mindspring.com (Zyg Skrobanski); Date: Tue Mar 4 07:32:18 2003; Is the IMD normally measured by using a two-tone test? If so, does the particular frequency of the tones (within a normal audio 3KHz bandwidth) change the IMD, i.e. which two tones would give the wo; /archives//html/Amps/2003-03/msg00091.html (8,598 bytes)
6. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: af4mp at mindspring.com (Zyg Skrobanski); Date: Tue Mar 4 09:05:18 2003; This thread has got me interested. What should be the minimum acceptable IMD spec for a transceiver? An amplifier, I think, will either pass through the transceiver's IMD or make it worse. I quickly; /archives//html/Amps/2003-03/msg00099.html (10,288 bytes)
7. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: af4mp at mindspring.com (Zyg Skrobanski); Date: Tue Mar 4 17:14:28 2003; Hi Ian, Does a transmitter with poor 3rd order IMD therefore have any noticeable distortion in the voice quality due to the speech intermod products within the audio bandwidth? If the system/amplifie; /archives//html/Amps/2003-03/msg00130.html (10,620 bytes)
8. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: af4mp at mindspring.com (Zyg Skrobanski); Date: Tue Mar 4 21:10:03 2003; Looking at the ARRL graphs of transceiver IMD testing, and comparing different rigs by their 3rd order products, if one rig has poor 3rd IMD results it does not necessarily follow (according to the; /archives//html/Amps/2003-03/msg00138.html (11,781 bytes)
9. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: af4mp at mindspring.com (Zyg Skrobanski); Date: Wed Mar 5 17:13:36 2003; The ARRL IMD testing graphs show that the IMD products are not exact mirror images as they appear on either side of the center frequency and may vary by 5 DB or so, that's probably OK if the rig is; /archives//html/Amps/2003-03/msg00209.html (9,185 bytes)
10. [Amps] MRF150 based 1500 watt amp design/cost (score: 208): Author: af4mp at mindspring.com (Zyg Skrobanski); Date: Wed Mar 5 21:41:03 2003; design for a fairly clean 600 watt HF amplifier based on 4 MRF150 transistors. combiner that, with some modification, should be able to handle 1.5 KW. Isn't that the same information that the R. F.; /archives//html/Amps/2003-03/msg00224.html (8,175 bytes)
11. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: af4mp at mindspring.com (Zyg Skrobanski); Date: Thu Mar 6 16:31:22 2003; Whenever a situation occurs that causes the IMD products, above and below a center frequency, to be uncorrelated. Please explain then, why the ARRL testing of IMD in apparently healthy transmitters; /archives//html/Amps/2003-03/msg00268.html (8,909 bytes)
12. [Amps] Why hasn't solid state replaced tubes? (score: 208): Author: af4mp at mindspring.com (Zyg Skrobanski); Date: Thu Mar 6 17:12:18 2003; What claim? I was looking at the IMD graphs that the ARRL publishes whenever it tests a transmitter, and noticed that the IMD products, shown on those graphs, were not symmetrically a mirror image a; /archives//html/Amps/2003-03/msg00272.html (9,326 bytes)

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