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References: [ +from:k7rdx@charter.net: 219 ]

Total 219 documents matching your query.

81. Re: [Amps] Surface Cleaning Tarnished Aluminum (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Tue, 24 Apr 2007 09:38:54 -0700
If you treat the aluminum with a caustic chemical to clean,remove pits,etc.You MUST polish to a high shine if you want to maintain it`s voltage breakdown rating.Rough aluminum is like two sharp surfa
/archives//html/Amps/2007-04/msg00251.html (9,159 bytes)

82. Re: [Amps] Surface Cleaning Tarnished Aluminum (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Tue, 24 Apr 2007 11:06:30 -0700
A much diluted batch of muriatic acid eches alum really well,followed by rinse in water. Also works really well for cleaning silver plated parts,ceramic tubes,etc...Dip in/out fast depending on dilut
/archives//html/Amps/2007-04/msg00258.html (11,178 bytes)

83. Re: [Amps] Surface Cleaning Tarnished Aluminum "YC156" (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Wed, 25 Apr 2007 21:53:12 -0700
Don`t think so...I do know metals having made my living for over 40yrs doing so...Soaking for several minutes would render your suggested results,however I dipped and rinsed in a matter of less than
/archives//html/Amps/2007-04/msg00310.html (14,371 bytes)

84. Re: [Amps] New Guy, Old 813 amp (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Thu, 26 Apr 2007 21:05:49 -0700
The LDG amp module is easy to install and use in a HB amp. The purists will all agree against using an L network for cathode matching and I tend to agree to some extent. I bought an LDG amp module fo
/archives//html/Amps/2007-04/msg00334.html (11,736 bytes)

85. Re: [Amps] New Guy, Old 813 amp (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Fri, 27 Apr 2007 08:18:06 -0700
Bob,did you use a toroidal balancing transformer before the coupling caps and cathodes?(Like Alpha 77sx) A pair of 8877`s must look close to 25 ohms at the input.The LDG module will cycle if more tha
/archives//html/Amps/2007-04/msg00340.html (15,710 bytes)

86. Re: [Amps] New Guy, Old 813 amp (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Fri, 27 Apr 2007 12:16:17 -0700
I have done this both ways,thru a seperate choke and thru the cathode side of the filament choke...Same results both ways...73,Jim.. -- Original Message -- From: "Tom W8JI" <w8ji@w8ji.com> To: "k7rdx
/archives//html/Amps/2007-04/msg00345.html (10,436 bytes)

87. [Amps] sk-265A tube socket (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Sun, 6 May 2007 17:53:20 -0700
Anyone know what tube a SK-265A socket fits?Thanks in advance,Jim.. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/
/archives//html/Amps/2007-05/msg00044.html (6,083 bytes)

88. Re: [Amps] sk-265A tube socket (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Sun, 6 May 2007 19:45:55 -0700
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2007-05/msg00048.html (8,216 bytes)

89. Re: [Amps] Transformer question... (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Tue, 8 May 2007 17:31:53 -0700
Carl`s right about the older transformers...They were designed for choke input supplys and high voltage/low current tubes of that era,and probably with a current rating of 300-400ma. The best money s
/archives//html/Amps/2007-05/msg00083.html (10,737 bytes)

90. Re: [Amps] Replacement plate choke for Alpha 76 (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Mon, 21 May 2007 21:29:05 -0700
If the RFParts choke won`t work, the Alpha probably has another smoked component(s)Bandswitch?Tube shorted? I`m using one of their chokes here in my modified DTR-2000L (8877)& it works very well with
/archives//html/Amps/2007-05/msg00159.html (9,355 bytes)

91. Re: [Amps] Replacing oil in a Bird load (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Thu, 7 Jun 2007 08:30:37 -0700
Try a Farm supply store.I bought several gallons of mineral oil from Big R here in Central Wa.As I recall I paid around 13.00 per gallon.Good quality stuff with no corrosive additives. I replaced the
/archives//html/Amps/2007-06/msg00034.html (7,984 bytes)

92. Re: [Amps] HV transformer buzzing!! Help Please (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Sun, 10 Jun 2007 13:30:01 -0700
Remove the trans,take it to a electric motor rewind shop and have it vacuum impregnated....No baloney with shims,etc,etc,...End of story...Jim K7RDX.. -- Original Message -- From: "EP Swynar" <gswyna
/archives//html/Amps/2007-06/msg00055.html (14,566 bytes)

93. Re: [Amps] Kenwood TL-922A Amp (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Sun, 24 Jun 2007 10:26:15 -0700
I had lightning here a few yrs ago...Not a direct hit,but close...The relay contacts welded together in my amp.Symptoms:The amp would key up and show zsac but drive was sent directly to the antenna a
/archives//html/Amps/2007-06/msg00140.html (9,862 bytes)

94. [Amps] YC-156 Tube for sale (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Fri, 6 Jul 2007 08:34:21 -0700
I have FS a nice YC-156A pull,tested. Pse contact me off list for more info..400.00 shipped Cont USA only..Jim K7RDX.. _______________________________________________ Amps mailing list Amps@contestin
/archives//html/Amps/2007-07/msg00049.html (6,154 bytes)

95. [Amps] Transformer question (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Sat, 7 Jul 2007 20:09:21 -0700
I have a 2kva isolation/240-120 step down transformer I want to use to power a rf deck with 120v filament transformer&blower. Is it necessary to switch the 240 primary or can the primary be hooked di
/archives//html/Amps/2007-07/msg00081.html (6,342 bytes)

96. Re: [Amps] Transformer question (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Sun, 8 Jul 2007 08:13:41 -0700
I understand what your`e saying...Iv`e done it that way many times too,what I want to do is run a balanced input drawing equal current from both legs of the 240v ac mains as well as isolating the rf
/archives//html/Amps/2007-07/msg00086.html (8,806 bytes)

97. Re: [Amps] Transformer question (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Sun, 8 Jul 2007 11:10:26 -0700
I have always isolated the neutral from chassis in my amps and I know for a fact that running 120vac filament transformers,120vac blower,relay supplys,primary switching relays,etc has to unbalance th
/archives//html/Amps/2007-07/msg00089.html (8,740 bytes)

98. Re: [Amps] SELL: Johnson Bros Verniers (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Sat, 14 Jul 2007 14:05:55 -0700
Ron has good stuff for sale as well as his Cuz Lou W1QJ....Iv`e bought parts from both and they were good parts delivered fast with no BS along the way....We need more guys to list their stuff here b
/archives//html/Amps/2007-07/msg00231.html (9,488 bytes)

99. Re: [Amps] SB-200 DATA (score: 1)
Author: <k7rdx@charter.net>
Date: Thu, 19 Jul 2007 0:08:10 -0700
_______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2007-07/msg00341.html (8,979 bytes)

100. Re: [Amps] FW: economics 3501 (score: 1)
Author: "k7rdx" <k7rdx@charter.net>
Date: Sun, 29 Jul 2007 07:40:30 -0700
Why are we bitching about gas prices when we have to pay less than most Countries world wide? We need a ration system to slow oil company profits? I just returned from Eu and gas here is very reasona
/archives//html/Amps/2007-07/msg00507.html (20,451 bytes)

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