Search String: Display: Description: Sort:

Results:

References: [ +from:sub1@rogerhalstead.com: 1109 ]

Total 1109 documents matching your query.

61. Re: [Amps] What is happening? (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Mon, 15 Oct 2007 14:34:52 -0400
I'm still receiving bounce messages from stuff that was posted back on the 10th. Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.conte
/archives//html/Amps/2007-10/msg00191.html (8,217 bytes)

62. Re: [Amps] Considering an Alpha 76PA (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Wed, 31 Oct 2007 14:28:37 -0400
The 76A is a nice amp. The only real considerations are watching the grid current on tune up and of course the price of the tubes. There are two versions with the difference being 2 or 3 tubes. Ther
/archives//html/Amps/2007-10/msg00291.html (9,102 bytes)

63. Re: [Amps] [TowerTalk] Interesting Merger in the Works? (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Tue, 6 Nov 2007 05:06:02 -0500
It's Vertex which makes it: Mo' To' Tex Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2007-11/msg00071.html (10,321 bytes)

64. Re: [Amps] Vertex_Yaesu Merger (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Tue, 6 Nov 2007 12:36:26 -0500
It takes little searching through older Yaesu radio models on the net to find that they used many solid state components that were near the end of life cycle which would have made supporting them af
/archives//html/Amps/2007-11/msg00086.html (12,839 bytes)

65. Re: [Amps] Import Tube in AL-1500F (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Tue, 6 Nov 2007 18:33:27 -0500
Try http://www.rfparts.com/ for one. I'm using a pair of the imported 3-500Zs in my Henry 2K4 which so far seem to be doing well. I have no experience with the metal/ceramic imports. Good Luck, Roger
/archives//html/Amps/2007-11/msg00099.html (9,771 bytes)

66. Re: [Amps] Tom W8JI (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Sat, 10 Nov 2007 00:23:15 -0500
Tom's expertise was one of the main reasons I joined the group as I knew I could count on good engineering practices in his answers. Roger (K8RI) _______________________________________________ Amps
/archives//html/Amps/2007-11/msg00127.html (7,065 bytes)

67. Re: [Amps] operating a transformer in oil (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Sat, 10 Nov 2007 14:41:51 -0500
I've not tried it with small transformers but it should work. How much would be gained is another matter. Normal transformers should run into I^2R loss problems well before they even approach satura
/archives//html/Amps/2007-11/msg00136.html (10,075 bytes)

68. Re: [Amps] 8877 Filament choke (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Thu, 15 Nov 2007 17:41:42 -0500
What about when running one on 6-meters? Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2007-11/msg00210.html (8,777 bytes)

69. Re: [Amps] 8877 Filament choke (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Thu, 15 Nov 2007 22:34:05 -0500
Thanks, I just might have that edition down in the basement...some where. Roger (K8RI) _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.c
/archives//html/Amps/2007-11/msg00218.html (11,151 bytes)

70. Re: [Amps] Bird 1KW+ Load Resistor/possible danger ! (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Sat, 17 Nov 2007 13:39:48 -0500
PCBs will typically have a sharp smell while the safe stuff smells like...oil such as castor oil, mineral oil, or motor oil. Silicone oil normally has no discernable odor, but it 's doubtful it woul
/archives//html/Amps/2007-11/msg00229.html (12,624 bytes)

71. Re: [Amps] BeO (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Sun, 18 Nov 2007 16:04:19 -0500
Just send them to me and I'll see they are properly taken care of. If you package them properly, I will even do so for no charge. Roger (K8RI) _______________________________________________ Amps mai
/archives//html/Amps/2007-11/msg00259.html (7,112 bytes)

72. Re: [Amps] BeO in tubes (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Sun, 18 Nov 2007 17:08:06 -0500
Although they say to wear all kinds of protective clothing and follow procedures they pretty much say it'll give you a rash or might cause difficulty in breathing. The MSDS at http://www.brushwellma
/archives//html/Amps/2007-11/msg00262.html (17,295 bytes)

73. Re: [Amps] BeO in tubes/tinwhiskers (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Sun, 18 Nov 2007 18:55:39 -0500
Although the "Tin Whiskers" caused by the elmination of lead in electronics may sound off topic in the AMPS reflector they are quite relevant as many of our newer commercial amps contain not only pri
/archives//html/Amps/2007-11/msg00266.html (10,987 bytes)

74. Re: [Amps] Winding large inductors (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Tue, 20 Nov 2007 17:59:23 -0500
Much depends on the tubing you'll be working with. IE, "temper" which depends on manufacture and it changes with age, heat, and how much the tubing has been "worked". New, "dead soft" 1/4" Copper tu
/archives//html/Amps/2007-11/msg00292.html (10,204 bytes)

75. Re: [Amps] Winding large inductors (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Tue, 20 Nov 2007 22:20:54 -0500
Using 1/4" tubing with 1/4" spacing a second coil could be wound at the same time, or you can hold a 1/4" thick piece of wood or plastic between the winding being laid down and the previous winding.
/archives//html/Amps/2007-11/msg00294.html (13,581 bytes)

76. Re: [Amps] Amplifier with Remote Capability (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Wed, 21 Nov 2007 22:03:43 -0500
In that case, why not go for the real thing? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEBTOX:IT&item=300173154309&_trksid=p3984.cTODAY.m238.lVI It only has about 13 hours to go.
/archives//html/Amps/2007-11/msg00315.html (8,376 bytes)

77. Re: [Amps] Amplifier with Remote Capability (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Wed, 21 Nov 2007 22:49:25 -0500
I think this is the third time it's been on there. Previously it had a BIN of something like $3,200 or $3,400 and narry a nibble. This time he started out much lower and will probably get more than t
/archives//html/Amps/2007-11/msg00318.html (9,637 bytes)

78. Re: [Amps] Amplifier with Remote Capability (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Thu, 22 Nov 2007 00:39:35 -0500
What's the difference between the D7 and the A7 (8877) which is running over a $1,000 with the imports on the order of $500 plus? Roger (K8RI) _______________________________________________ Amps ma
/archives//html/Amps/2007-11/msg00323.html (11,301 bytes)

79. Re: [Amps] Soft 572b's (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Thu, 22 Nov 2007 00:59:23 -0500
IIRC (It was a while back) The only thing I had to do to mine to go on 10 was the band switch mod. No other changes. Same for the DTR-2000 and MLA-2500. I don't remember any filter change. Roger (K8
/archives//html/Amps/2007-11/msg00324.html (8,716 bytes)

80. Re: [Amps] Amplifier with Remote Capability (score: 1)
Author: "Roger" <sub1@rogerhalstead.com>
Date: Fri, 23 Nov 2007 11:02:32 -0500
I would think the DC motors and relays could be replaced with stepper motors and the 741s could still be used as comparitors from the pots in a bridge. It should give the ability to adjust the speed
/archives//html/Amps/2007-11/msg00347.html (9,867 bytes)

Current List: 61 - 80
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20]
This search system is powered by Namazu