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1. [AMPS] Re: Variable Screen Voltage! (score: 1): Author: k7fm@teleport.com (Lamb); Date: Thu, 16 Mar 2000 06:53:18 -0800; Or if the regulation of the RF drive voltage was poor, or if the grid bias shifted when grid current was drawn. if I think the answer to that is that distortion is reduced in gg because of negative; /archives//html/Amps/2000-03/msg00739.html (12,384 bytes)
2. [AMPS] Re: Variable Screen Voltage! (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 16 Mar 2000 15:03:01 -0000; not mpg If you go back to my favourite work (Pappenfus et al) he goes into this into some detail. He says 'tetrode tubes can be used in cathode-driven amplifiers. The power gain is considerably highe; /archives//html/Amps/2000-03/msg00743.html (8,331 bytes)
3. [AMPS] Re: Variable Screen Voltage! (score: 1): Author: 2@vc.net (measures); Date: Thu, 16 Mar 2000 08:00:44 -0700; How do you keep the screen/cathode voltage constant if there is a substantial resistance in the cathode? AB1 amplifiers are not well suited for NFB. When the grid draws current, the exciter is no lo; /archives//html/Amps/2000-03/msg00746.html (11,401 bytes)
4. [AMPS] Re: Variable Screen Voltage! (score: 1): Author: philk5pc@tyler.net (Phil Clements); Date: Thu, 16 Mar 2000 09:59:23 -0600; Been there, did that! It works very nicely. I built mine from the article in the January 1974 issue of Ham Radio, by W4OQ. (((73))) Phil, K5PC -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Su; /archives//html/Amps/2000-03/msg00747.html (11,232 bytes)
5. [AMPS] Re: Variable Screen Voltage! (score: 1): Author: 2@vc.net (measures); Date: Thu, 16 Mar 2000 09:14:37 -0700; The 30S-1 uses a cathode driven tetrode. power gain is about 11. - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesti; /archives//html/Amps/2000-03/msg00751.html (7,776 bytes)
6. [AMPS] Re: Variable Screen Voltage! (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Thu, 16 Mar 2000 17:21:22 -0000; Very true. It also has RF negative feedback, which, I suggest, is why the power gain is about 11. 73 Peter G3RZP -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com; /archives//html/Amps/2000-03/msg00756.html (7,370 bytes)
7. [AMPS] Re: Variable Screen Voltage! (score: 1): Author: Peter_Chadwick@mitel.com (Peter Chadwick); Date: Fri, 17 Mar 2000 08:43:35 -0000; It also has additional deliberate negative RF feedback. 73 Peter G3RZP -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@con; /archives//html/Amps/2000-03/msg00766.html (7,310 bytes)

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