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References: [ +from:QRV@kd4e.com: 267 ]

Total 267 documents matching your query.

41. Re: [RFI] 1.23V-30V DC DC Buck Converter Step Down Module (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 05 Jan 2013 23:52:16 -0500
It would be used around the radio area to fill the gap, home and mobile/portable, where I needed a voltage I don't have handy. Increasing the size and weight somewhat is not a significant matter, not
/archives//html/RFI/2013-01/msg00055.html (9,525 bytes)

42. Re: [RFI] 1.23V-30V DC DC Buck Converter Step Down Module (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sun, 06 Jan 2013 18:36:29 -0500
Dale, I have that covered, thanks. This is to supplement and be portable. I wish I could say that "a tutorial in power supply filter design" would equip me but given my fragmented time I'd be lucky t
/archives//html/RFI/2013-01/msg00060.html (9,402 bytes)

43. [RFI] RFI via Florescent Lights, HP 5328A & 2/440 HT? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Wed, 30 Jan 2013 14:13:19 -0500
How's that for an odd nexus? If my 2/440 HT is on 440 and I turn on the two 4' florescent lights in the office/radio room it remains quiet. If my HP 5328A frequency counter is powered-up and I turn o
/archives//html/RFI/2013-01/msg00146.html (7,580 bytes)

44. Re: [RFI] RFI via Florescent Lights, HP 5328A & 2/440 HT? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Wed, 30 Jan 2013 16:29:31 -0500
400 comedians out of work and Harmon has to start! ;-) Not a problem here as I'm inside a steel building so the HT is useless for ops unless connected to an external antenna. It is more a curiosity t
/archives//html/RFI/2013-01/msg00148.html (7,755 bytes)

45. Re: [RFI] RFI via Florescent Lights, HP 5328A & 2/440 HT? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Wed, 30 Jan 2013 20:33:22 -0500
Is radio great fun? Always new adventures. It's probably doing it all the time, as are the lights, but when you had them both on, at the same time, and the receiver on a particular frequency, you hea
/archives//html/RFI/2013-01/msg00150.html (8,128 bytes)

46. [RFI] Power strip filtering & protection (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Thu, 07 Mar 2013 20:57:02 -0500
Occasionally there is a problem with RFI via house wiring. I requested info via Walmart a while back re. the Belkin BE112230-08 SurgeMaster Professional 12-Outlets Surge Protector vs an Inland12-Outl
/archives//html/RFI/2013-03/msg00022.html (8,128 bytes)

47. Re: [RFI] Strong, broadband noise during wet conditions (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Fri, 15 Mar 2013 17:03:22 -0400
My local experience was that the utility co was grateful for the heads-up. They found several nearly disintegrated lightning protectors that only looked OK from the ground. The said they would inevit
/archives//html/RFI/2013-03/msg00079.html (9,412 bytes)

48. [RFI] APC SURT6000XLT Smart-UPS RT 6000 VA 208V 240V UPS? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Tue, 19 Mar 2013 11:01:23 -0400
Anyone familiar with the APC SURT6000XLT Smart-UPS RT 6000 VA 208V 240V UPS? It's perfect between a Prius & home for emergency power. Any known RFI problems? They are $700. used which is afforable co
/archives//html/RFI/2013-03/msg00089.html (7,192 bytes)

49. [RFI] Printed Circuit Board Design for Real-World EMI Control (Electromagnetic Compatibility is NOT Magic!) (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 30 Mar 2013 20:40:24 -0400
Anyone familiar with the author & his work? http://www.brucearch.com/seminar1.html -- Thanks! & 73, KD4E.com David Colburn nevils-station.com I don't google I SEARCH! duckduckgo.com Network: groups.y
/archives//html/RFI/2013-03/msg00145.html (7,183 bytes)

50. [RFI] Per prior EMP discussions - onesecondafter.com (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sat, 06 Apr 2013 20:04:16 -0400
Interesting ... http://www.onesecondafter.com/ -- Thanks! & 73, KD4E.com David Colburn nevils-station.com I don't google I SEARCH! duckduckgo.com Network: groups.yahoo.com/group/qrv Restored to desig
/archives//html/RFI/2013-04/msg00000.html (6,952 bytes)

51. [RFI] Trifield 100XE Full Spectrum Electromagnetic Meter (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Wed, 10 Apr 2013 19:18:52 -0400
One of these was just posted on qrz.com Any value for RFI-hunting to anyone? -- Thanks! & 73, KD4E.com David Colburn nevils-station.com I don't google I SEARCH! duckduckgo.com Network: groups.yahoo.c
/archives//html/RFI/2013-04/msg00004.html (6,785 bytes)

52. [RFI] Is it true this is "immune" to generating RFI? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Thu, 25 Apr 2013 18:25:53 -0400
http://www.instructables.com/id/Power-Over-Ethernet-PoE-Adapter/ -- Thanks! & 73, KD4E.com David Colburn nevils-station.com I don't google I SEARCH! duckduckgo.com Network: groups.yahoo.com/group/qrv
/archives//html/RFI/2013-04/msg00044.html (6,916 bytes)

53. Re: [RFI] Shielding a ground wire (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Thu, 25 Apr 2013 23:04:01 -0400
Interesting notion to solve the problem, though I am guessing the RFI experts here may want to look at why your ground wire is getting RFI - both the sources and something about your grounding system
/archives//html/RFI/2013-04/msg00047.html (8,396 bytes)

54. Re: [RFI] Is it true this is "immune" to generating RFI? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sun, 28 Apr 2013 19:34:32 -0400
They seem to be somewhat careless in their use of terms so that it quickly becomes unclear when they refer to incoming vs outgoing RFI/interference ... -- whitewolf499 says: Apr 25, 2013. 11:03 AMRep
/archives//html/RFI/2013-04/msg00085.html (12,362 bytes)

55. [RFI] FCC Modernizes Its Experimental Licensing Rules (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Mon, 29 Apr 2013 20:57:30 -0400
What could go wrong? "... allowing demonstrations in residential areas of devices not yet authorized, so long as the relevant spectrum licensee is working with the device manufacturer;" http://www.co
/archives//html/RFI/2013-04/msg00088.html (7,698 bytes)

56. Re: [RFI] Comments on RFI from Ductless Air Conditioning Units? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Wed, 08 May 2013 19:13:20 -0400
If I am thinking of the same units as he is they pipe the freon around the house along with the AC voltage and control lines. You end up with several potential sources of RFI plus a built in antenna
/archives//html/RFI/2013-05/msg00004.html (9,163 bytes)

57. Re: [RFI] Comments on RFI from Ductless Air Conditioning Units? (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Wed, 08 May 2013 20:03:10 -0400
I'd ask them for one or more locations where you might see them in action ... and bring a radio or two ... Pretty close. The indoor units are actually DC but you have the right idea. Here is an examp
/archives//html/RFI/2013-05/msg00006.html (9,098 bytes)

58. Re: [RFI] RF tight rooms - somewhat OT (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sun, 12 May 2013 10:32:52 -0400
What about a 20' steel shipping container - well-grounded. Nearly-indestructible in storms, excellent for storage, and all metal. They come with waterproof vents to remove gases from the items being
/archives//html/RFI/2013-05/msg00010.html (8,443 bytes)

59. Re: [RFI] What the Cellphone Industry Doesn't Want You to Know about Radiation Concerns (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Wed, 12 Jun 2013 15:43:09 -0400
Here's just one place to begin to get a handle on this self-promoting kook ... http://depletedcranium.com/devra-davis-refuted/ Devra Davis -- Thanks! & 73, KD4E.com David Colburn - Nevils, Georgia US
/archives//html/RFI/2013-06/msg00021.html (7,927 bytes)

60. Re: [RFI] What the Cellphone Industry Doesn't Want You to Know about Radiation Concerns (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Fri, 14 Jun 2013 12:19:43 -0400
Trogladite-Leftists aren't troubled by poor English let alone obvious lies. Any means to the end of unlimited centralized power to control every aspect of life, to force everyone into (Soviet-style)
/archives//html/RFI/2013-06/msg00027.html (10,107 bytes)


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