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41. [Amps] Off topic ( Foam Wings ) (score: 1)
Author: donroden@hiwaay.net
Date: Wed, 30 Sep 2009 14:06:39 -0500
Carden 40% Extra 300 underpowered with a 3W70cc twin...... What do you have ? Don WA4NPL _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.
/archives//html/Amps/2009-09/msg00375.html (7,523 bytes)

42. [Amps] Emtron DX-3 (score: 1)
Author: donroden@hiwaay.net
Date: Fri, 02 Oct 2009 10:28:50 -0500
Anyone running an Emtron DX-3 or have one for sale ? Don WA4NPL _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-10/msg00022.html (6,208 bytes)

43. Re: [Amps] Henry 2K-2 (score: 1)
Author: donroden@hiwaay.net
Date: Thu, 08 Oct 2009 11:38:56 -0500
Shorter ..... I have tested 4-400s in a SB-220, but you cant close the cover. 3-500s should work just fine. Don WA4NPL _______________________________________________ Amps mailing list Amps@contestin
/archives//html/Amps/2009-10/msg00141.html (8,440 bytes)

44. Re: [Amps] Blower Restrictor QU? (score: 1)
Author: donroden@hiwaay.net
Date: Thu, 15 Oct 2009 14:35:13 -0500
Something to keep the impeller from falling out during shipping ? Don WA4NPL _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/
/archives//html/Amps/2009-10/msg00219.html (8,120 bytes)

45. Re: [Amps] Peter Dahl XFMR question (I Have one!) (score: 1)
Author: donroden@hiwaay.net
Date: Mon, 19 Oct 2009 09:13:28 -0500
In commercial service, the 5KV tap would work for a single 4CX1500B. (and running 208vac the 6kv tap might be used ) Don WA4NPL [Hide Quoted Text] My Goodness! I just picked up a new old stock Peter
/archives//html/Amps/2009-10/msg00258.html (8,754 bytes)

46. Re: [Amps] Peter Dahl XFMR question (I Have one!) (score: 1)
Author: donroden@hiwaay.net
Date: Mon, 19 Oct 2009 15:58:37 -0500
I mistyped ... I had a (FIVE) 5CX1500B running 5KV at .6 amps for years. Don WA4NPL _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/m
/archives//html/Amps/2009-10/msg00273.html (11,209 bytes)

47. Re: [Amps] Peter Dahl XFMR question (I Have one!) THANKS ALL!! (score: 1)
Author: donroden@hiwaay.net
Date: Mon, 19 Oct 2009 16:29:02 -0500
$2,200 plus freight if commercial service and needed immediatly. $400-500 if some ham needs a big transfornmer. Don WA4NPL _______________________________________________ Amps mailing list Amps@conte
/archives//html/Amps/2009-10/msg00274.html (10,809 bytes)

48. Re: [Amps] AL-1200 Relay Confusion (score: 1)
Author: donroden@hiwaay.net
Date: Sat, 24 Oct 2009 10:27:10 -0500
If the AC impedance is high enough ........ Don WA4NPL _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-10/msg00317.html (7,558 bytes)

49. Re: [Amps] TL922 Power Plugs (score: 1)
Author: donroden@hiwaay.net
Date: Tue, 03 Nov 2009 11:41:13 -0600
My article 250 says ground everything as many times as you can and then add three more grounds..... LOL !!! Don WA4NPL _______________________________________________ Amps mailing list Amps@contesti
/archives//html/Amps/2009-11/msg00024.html (8,342 bytes)

50. Re: [Amps] B- questions (score: 1)
Author: donroden@hiwaay.net
Date: Sun, 08 Nov 2009 10:39:03 -0600
Klystrons have cathode voltages of -12KV @ 10 amps or more. The same rules of safety apply to any potentials above OR below ground, Don WA4NPL _______________________________________________ Amps mai
/archives//html/Amps/2009-11/msg00126.html (8,078 bytes)

51. Re: [Amps] High Voltage wire (score: 1)
Author: donroden@hiwaay.net
Date: Tue, 01 Dec 2009 19:31:49 -0600
Neon wire is #14 stranded. I run a 30 foot piece between a 35KW FM transmitter and it's remote power supply..... 4 amps @ 9KV. Don WA4NPL _______________________________________________ Amps mailing
/archives//html/Amps/2009-12/msg00022.html (8,201 bytes)

52. Re: [Amps] Advice (score: 1)
Author: donroden@hiwaay.net
Date: Sun, 06 Dec 2009 21:35:33 -0600
WAAY-TV ran a Varian 4KM150LA for over 200,000 hours @ 55KW out. It was the longest lasting Varian Klystron in 1992 ( written up in Broadcast Engineering )and lasted another 17 years. Over a quarter
/archives//html/Amps/2009-12/msg00183.html (8,350 bytes)

53. Re: [Amps] Conservation of Energy! (score: 1)
Author: donroden@hiwaay.net
Date: Mon, 07 Dec 2009 11:27:30 -0600
And the losses due to the heating...... how do they reclaim the heat and the losses ? Don WA4NPL _______________________________________________ Amps mailing list Amps@contesting.com http://lists.con
/archives//html/Amps/2009-12/msg00194.html (8,179 bytes)

54. Re: [Amps] "Stacking" power supplies?? how? (score: 1)
Author: donroden@hiwaay.net
Date: Mon, 14 Dec 2009 20:32:51 -0600
I took two RS-70s and paralleled the bases of each supply's output transistors through an added connector on the rear of each. Don WA4NPL _______________________________________________ Amps mailing
/archives//html/Amps/2009-12/msg00334.html (10,222 bytes)

55. Re: [Amps] Alternative cooling strategies for SB-220? (score: 1)
Author: donroden@hiwaay.net
Date: Tue, 15 Dec 2009 18:51:39 -0600
Build an enclosure that vents out the back... equipment built into the wall concept. That will drop the noise at least by half. Don WA4NPL _______________________________________________ Amps mailing
/archives//html/Amps/2009-12/msg00358.html (11,093 bytes)

56. Re: [Amps] Alternative cooling strategies for SB-220? (score: 1)
Author: donroden@hiwaay.net
Date: Wed, 16 Dec 2009 17:58:43 -0600
Add a spigot to the return line for morning coffee or afternoon tea. Don WA4NPL _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailm
/archives//html/Amps/2009-12/msg00384.html (8,380 bytes)

57. Re: [Amps] Does Ameritron have the industrys worse customer service? (score: 1)
Author: donroden@hiwaay.net
Date: Fri, 18 Dec 2009 21:07:52 -0600
TOOO FUNNY !!! Don WA4NPL _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-12/msg00473.html (11,752 bytes)

58. Re: [Amps] water cooling (score: 1)
Author: donroden@hiwaay.net
Date: Fri, 18 Dec 2009 21:10:48 -0600
MSDC Klystrons ran around ten feet @ 32KV applied. Don WA4NPL _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-12/msg00474.html (17,366 bytes)

59. Re: [Amps] RF issue (score: 1)
Author: donroden@hiwaay.net
Date: Mon, 25 Jan 2010 20:25:17 -0600
Not a very low impedance ground ? Don WA4NPL _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2010-01/msg00329.html (7,385 bytes)

60. Re: [Amps] Layout of tube (score: 1)
Author: donroden@hiwaay.net
Date: Tue, 26 Jan 2010 08:40:30 -0600
I used stacked muffin fans on a 4 x 4CX250 amp, and one fan wouldn't get the job done. Two worked great, and three didn't seem to be proportionally better. Don WA4NPL Quoting vk3pa@vk3pa.com: _______
/archives//html/Amps/2010-01/msg00338.html (11,455 bytes)

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