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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+tank\s+calculations\s+\-\s+need\s+input\s*$/: 12 ]

Total 12 documents matching your query.

1. [Amps] tank calculations - need input (score: 1): Author: "ka1mwp" <ka1mwp@comcast.net>; Date: Sat, 17 Oct 2009 16:49:39 -0400; GU-84b based amp ? tetrode boards for control. OK so, working again on my amp, 2.3kv on plate, 350v (when ON) to G2 and G1 has -65v. I have well over 1 amp available for plate current if needed. Used; /archives//html/Amps/2009-10/msg00238.html (8,140 bytes)
2. Re: [Amps] tank calculations - need input (score: 1): Author: jeff millar <jeff@wa1hco.net>; Date: Sat, 17 Oct 2009 17:34:05 -0400; When I play with this design, it appears that 5 uH for the inductor at 3.8M is just too low. Rp 1000 Cstrays 20 p Ctune 410 pF L 5 uH Cload 1660 pF Those values seem to agree with what you described.; /archives//html/Amps/2009-10/msg00239.html (10,053 bytes)
3. Re: [Amps] tank calculations - need input (score: 1): Author: "Bill, W6WRT" <dezrat1242@yahoo.com>; Date: Sat, 17 Oct 2009 16:04:35 -0700; ORIGINAL MESSAGE: REPLY: That's backwards. All the way out (unmeshed) is minimum capacitance. Is that leading you the wrong way? 73, Bill W6WRT _______________________________________________ Amps ma; /archives//html/Amps/2009-10/msg00240.html (7,638 bytes)
4. Re: [Amps] tank calculations - need input (score: 1): Author: "ka1mwp" <ka1mwp@comcast.net>; Date: Sat, 17 Oct 2009 19:10:28 -0400; Well, I can see turning it clockwise lowers the value...as I sit here and double check... Out is increasing value (CCW) it gets looser and opens the plates... ORIGINAL MESSAGE: REPLY: That's backward; /archives//html/Amps/2009-10/msg00241.html (7,764 bytes)
5. Re: [Amps] tank calculations - need input (score: 1): Author: Roger <sub1@rogerhalstead.com>; Date: Sat, 17 Oct 2009 22:44:59 -0400; That's backwards to mine. Does the screw have right or left hand threads. If CCW would be backing the screw out it's pushing the plates closer together. The screw should be held in place so it can on; /archives//html/Amps/2009-10/msg00242.html (8,668 bytes)
6. Re: [Amps] tank calculations - need input (score: 1): Author: "ka1mwp" <ka1mwp@comcast.net>; Date: Sun, 18 Oct 2009 08:02:05 -0400; Comet CV05c - 650n/5 Hooked up to a GME LC200 inductance meter Watching the capacitance as I turn, not that it matters.. The issue is why does the amp need LOTS AND LOTS of capacitance :) That's back; /archives//html/Amps/2009-10/msg00243.html (9,692 bytes)
7. Re: [Amps] tank calculations - need input (score: 1): Author: jeff millar <jeff@wa1hco.net>; Date: Sun, 18 Oct 2009 09:33:00 -0400; When i responded to your original email, I ignored the in/out more/less capacitance because you said that you could get 1.5 kW out. That means you can get a match. That email didn't make it to the li; /archives//html/Amps/2009-10/msg00244.html (12,034 bytes)
8. Re: [Amps] tank calculations - need input (score: 1): Author: "DF3KV" <df3kv@t-online.de>; Date: Sun, 18 Oct 2009 19:48:30 +0200; I don愒 see anything wrong how you set the pi components. All values are the same with my calculations. 1000pf for C2 plus 1500pf total added should load nicely with 5焙 on 80m at a Q of 12. What kin; /archives//html/Amps/2009-10/msg00247.html (10,983 bytes)
9. Re: [Amps] tank calculations - need input (score: 1): Author: jeff millar <jeff@wa1hco.net>; Date: Sun, 18 Oct 2009 20:42:37 -0400; If you want a Q of 12, values of about 430pf, 4.6 uH, 1900 pF do work. But you really only need a Q of about 7 to comfortably match 1000 Ohms to 50 Ohms. The Q of 12 rule was created in the days of h; /archives//html/Amps/2009-10/msg00249.html (12,586 bytes)
10. Re: [Amps] tank calculations - need input (score: 1): Author: "DF3KV" <df3kv@t-online.de>; Date: Mon, 19 Oct 2009 03:01:47 +0200; Yes, a Q of 7 is OK at that impedance if harmonics at only -24db are acceptable. Multi-Op stations are more interested in -35 to -40db. With such low Q one should make use of Pi-L. 73 Peter If you wa; /archives//html/Amps/2009-10/msg00250.html (13,177 bytes)
11. [Amps] tank calculations - need input (score: 1): Author: "chuck" <ka1mwp@comcast.net>; Date: Mon, 19 Oct 2009 14:40:23 -0400; I'm going to move the inductance up into the low 7's tonight and see where C2 works. I'm sure a good look at a scope will also let me know whats going on, I may have something else Happening not bein; /archives//html/Amps/2009-10/msg00267.html (9,121 bytes)
12. Re: [Amps] tank calculations - need input (score: 1): Author: "Chuck Partain" <CPartain@telecast-fiber.com>; Date: Mon, 19 Oct 2009 14:39:10 -0400; I'm going to move the inductance up into the low 7's tonight and see where C2 works. I'm sure a good look at a scope will also let me know whats going on, I may have something else Happening not bein; /archives//html/Amps/2009-10/msg00292.html (9,160 bytes)

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