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41. Re: [Amps] Parasitics & Filament Sag (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Sat, 26 Aug 2006 19:41:22 -0400; Hal, You raise a good point which could be extrapolated like this: Parasitic oscillation MAY be the cause for SOME grid-to-filament shorts. There has been equal number of situations where the applica; /archives//html/Amps/2006-08/msg00685.html (10,459 bytes)
42. Re: [Amps] Parasitics & Filament Sag (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Sat, 26 Aug 2006 22:48:33 -0400; I wouldn't know, I never owned one. However, the amp that we used the nichrome on was a HB 2 X 813 amp. Myself and my co-colaborator, got a 'ticket' from the FCC. It seems we were throwing VHF spurs; /archives//html/Amps/2006-08/msg00688.html (9,836 bytes)
43. Re: [Amps] Parasitics & Filament Sag (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Sun, 27 Aug 2006 13:48:03 -0400; Snip: You are a charlatan and a fool ... you have perverted engineering science to promote your own snake oil and take advantage of those who do not have the background and ability to see through you; /archives//html/Amps/2006-08/msg00712.html (10,262 bytes)
44. Re: [Amps] Parasitics & Filament Sag (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Sun, 27 Aug 2006 14:51:11 -0400; You gotta be kidding me?!??? Mike(y) W3SLK -- Original Message -- From: "Tom W8JI" <w8ji@w8ji.com> To: "Mike Sawyer" <w3slk@uplink.net>; "Joe Subich, W4TV" <w4tv@subich.com>; <AMPS@CONTESTING.COM> Se; /archives//html/Amps/2006-08/msg00717.html (10,093 bytes)
45. Re: [Amps] Parasitics & Filament Sag (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Sun, 27 Aug 2006 15:07:00 -0400; beneficial if you had figured out WHY. 73, John WA4TT John, That's a good point. As a member of the "design team", (I say that tongue in cheek), that they were installed as a preventative measure. T; /archives//html/Amps/2006-08/msg00720.html (10,098 bytes)
46. Re: [Amps] Parasitics & Filament Sag (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Tue, 29 Aug 2006 12:27:02 -0400; "813s don't need a VHF suppressor because they are pushing the limit at 28MHz." On the contrary, I remember seeing a single 813 amp for 50Mhz in a handbook somewhere. Also, my problem was spur genera; /archives//html/Amps/2006-08/msg00773.html (9,703 bytes)
47. Re: [Amps] Parasitics & Filament Sag (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Wed, 30 Aug 2006 07:33:27 -0400; Rich asked, "Did the 813 have a metal anode or a carbon anode?" They were the familiar RCA's with the thick carbon plate. Mod-U-Lator, Mike(y) W3SLK _______________________________________________ Am; /archives//html/Amps/2006-08/msg00799.html (9,692 bytes)
48. Re: [Amps] I need coil clips (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Sun, 3 Sep 2006 09:00:28 -0400; Ken, Try Moyer's Electronics in Pottsville/Sunbury/Hazelton, PA. Here's their web site or give them a call on Tuesday since I believe the are closed. Ray WD2AFJ does a lot of business with them and h; /archives//html/Amps/2006-09/msg00056.html (7,342 bytes)
49. Re: [Amps] Parasitics & Filament Sag (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Mon, 4 Sep 2006 08:46:20 -0400; Peter, Show me concrete evidence that the voltage and current are not in phase when XL=XC. Basic AC theory demonstrates that resonance is the point where all that's left is Z=R, where R is the DC res; /archives//html/Amps/2006-09/msg00066.html (9,442 bytes)
50. Re: [Amps] Parasitics & Filament Sag (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Mon, 4 Sep 2006 09:51:43 -0400; Whoa Nellie! The way reactances are taught here are: XL) XL=2*p*f*L where as p= 3.14 (for all practical purposes), f= frequency, and L= inductance in henries. Then XL is the reactive component in ohm; /archives//html/Amps/2006-09/msg00068.html (8,892 bytes)
51. Re: [Amps] *** SPAM *** Re: Parasitics & Filament Sag (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Mon, 4 Sep 2006 18:19:03 -0400; Peter said: "Is this a bit clearer?" To some extent but what I and I believe others are looking at is a typical L-R-C type of circuit. Not where you have R in the L branch and R in the C branch. This; /archives//html/Amps/2006-09/msg00082.html (7,349 bytes)
52. Re: [Amps] Gerritsen Sentencing (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Tue, 19 Sep 2006 17:29:58 -0400; Who is Jack Gerritsen? Mod-U-Lator, Mike(y) W3SLK -- Original Message -- From: "Gary Smith" <wa6fgi@sbcglobal.net> To: "tentenlist" <tentenlist@ten-ten.org>; "TenMeters" <TenMeters@yahoogroups.com>;; /archives//html/Amps/2006-09/msg00228.html (7,414 bytes)
53. [Amps] New Amps Group (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Tue, 19 Sep 2006 21:33:57 -0400; There's a new amplifier group. Without any of the 'censorship' you have come to love. Mod-U-Lator, Mike(y) W3SLK http://groups.yahoo.com/group/ham_amplifiers _________________________________________; /archives//html/Amps/2006-09/msg00235.html (6,203 bytes)

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