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Total 493 documents matching your query.

161. Re: [RFI] Automobile RFI (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Fri, 17 Dec 2010 15:38:45 -0500
Ah, yes that sure brings back memories. Remember what those things cost. Early sets were several thousand dollars. In today's dollars that'd get you a 60" wide screen, home entertainment center AND a
/archives//html/RFI/2010-12/msg00131.html (13,185 bytes)

162. [RFI] Do we neglect problems and fix symptoms? (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Thu, 30 Dec 2010 14:36:13 -0500
Some times the approach to fixing problems seems more like treating the common cold. IE fixing the symptoms instead of the problems. IF one station uses a piece of equipment with no problems, yet ano
/archives//html/RFI/2010-12/msg00164.html (8,314 bytes)

163. Re: [RFI] Do we neglect problems and fix symptoms? (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Thu, 30 Dec 2010 22:42:42 -0500
Experience would indicate it goes a lot lower in frequency than that. Oh, so may years ago I had set up with stations on each band. A good portion of the station was in a home made console. http://ww
/archives//html/RFI/2010-12/msg00175.html (19,989 bytes)

164. Re: [RFI] RFI from Apple Airport Extreme (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Fri, 31 Dec 2010 01:50:24 -0500
Most of the stuff in the shop that came with wall warts is connected to the big 12V supply instead. I do have a couple connected to the 40A switcher, but it's as quiet as a field mouse. Just be caref
/archives//html/RFI/2010-12/msg00176.html (10,050 bytes)

165. Re: [RFI] Plasma TV's are killing our hobby (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Fri, 31 Dec 2010 06:38:41 -0500
Take heart, it may take a long time, but the plasma is steadily losing market share and the shortcomings of LCDs are being rapidly overcome to the point where they are far more popular than the plasm
/archives//html/RFI/2010-12/msg00179.html (8,781 bytes)

166. Re: [RFI] Plasma TV's are killing our hobby (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Sun, 02 Jan 2011 15:23:22 -0500
Not necessarily. not all plasma sets create RFI, and many LCD sets can match the plasma for viewing angle. I do a lot of photo editing on the computers so I am quite sensitive to color, brightness, s
/archives//html/RFI/2011-01/msg00021.html (17,833 bytes)

167. Re: [RFI] Plasma TV's are killing our hobby (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Sun, 02 Jan 2011 19:20:33 -0500
And reports are that not all Plasma sets generate RFI 73 Roger (K8RI) _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/
/archives//html/RFI/2011-01/msg00025.html (9,384 bytes)

168. Re: [RFI] Plasma TV's are killing our hobby (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Mon, 03 Jan 2011 00:06:59 -0500
It is. However I think the "Plasma sets as a whole are more likely to cause RFI" due to the nature/mechanics of the displays. I'm just basing that on what I hear and read. 73 Roger (K8RI) ___________
/archives//html/RFI/2011-01/msg00030.html (11,059 bytes)

169. Re: [RFI] Unknown Spec Clamp On Toroids (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Wed, 05 Jan 2011 15:52:07 -0500
Although better than nothing, I've not found the small clampons to be very effective. 2-meters and up...maybe but I've not tried any up there. 73 Roger (K8RI) ________________________________________
/archives//html/RFI/2011-01/msg00064.html (6,871 bytes)

170. Re: [RFI] VHF/UHF and TVI (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Sun, 09 Jan 2011 22:39:57 -0500
The only TVI (from home) I've ever had was from 2-meters on channel 12. with no direct harmonic relationship. OTOH when mobile watch out for leakage on cable Ch 18 as the audio subcarrier is 145.25.
/archives//html/RFI/2011-01/msg00085.html (8,086 bytes)

171. Re: [RFI] ATT Uverse (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Wed, 12 Jan 2011 00:29:03 -0500
This makes me nervous as AT&T stuck a bunch of wire markers across the front of our yard last week and we do have AT&T, just no U-verse. If they show up at the door they do not get to install anythin
/archives//html/RFI/2011-01/msg00104.html (7,640 bytes)

172. Re: [RFI] Fixing Pin 1 Problems (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Thu, 13 Jan 2011 16:15:02 -0500
I choose to use the word ground because that is what I used. I had an intermittent problem with something that appeared to be pin one and then it didn't. The hand mike on the 756 Pro worked just fine
/archives//html/RFI/2011-01/msg00121.html (15,389 bytes)

173. Re: [RFI] Fixing Pin 1 Problems (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Thu, 13 Jan 2011 17:16:09 -0500
True but in this case I did connect it physically to ground/earth. The question remains, why did it work for several years and then suddenly start picking up AC? I'd like to know where it was coming
/archives//html/RFI/2011-01/msg00126.html (10,967 bytes)

174. Re: [RFI] HF DF Antenna recommendations (score: 1)
Author: "K8RI (Roger)" <K8RI@rogerhalstead.com>
Date: Mon, 17 Jan 2011 21:51:46 -0500
This goes *way back*, but I used to use a Singer Metrics system. The receiver weighed a ton...OK about 70# +/- but the antenna when went on a wood tripod was only about a foot in diameter. I used tha
/archives//html/RFI/2011-01/msg00160.html (10,007 bytes)

175. [RFI] Pulse noise on 40 (score: 1)
Author: "K8RI (Roger)" <K8RI@rogerhalstead.com>
Date: Tue, 18 Jan 2011 23:28:40 -0500
The past couple of nights at various times between 10:00PM and 4:00 AM I've heard a pulse noise that sounds like an electric fence *except* it is more or less a discrete frequency about 3 to 6 Khz wi
/archives//html/RFI/2011-01/msg00163.html (7,389 bytes)

176. Re: [RFI] Pulse noise on 40 (score: 1)
Author: "K8RI (Roger)" <K8RI@rogerhalstead.com>
Date: Wed, 19 Jan 2011 17:49:08 -0500
Unlikely as it's a discrete frequency ...more or less. It appears to be a group of closely spaced pulses (digital?) about 3 KHz wide +/- that drifts through the pass band (set for SSB) in about 15 se
/archives//html/RFI/2011-01/msg00169.html (8,240 bytes)

177. Re: [RFI] CHECK your grounds. (score: 1)
Author: "K8RI (Roger)" <K8RI@rogerhalstead.com>
Date: Wed, 26 Jan 2011 18:53:54 -0500
I'd add that the green wire is needed for ground fault breakers and outlets to work. Also it causes the fuse or breaker (GFI) to go if there is a short (or leakage current to ground), but over curren
/archives//html/RFI/2011-01/msg00217.html (12,315 bytes)

178. [RFI] Another look at Geothermal H&V (score: 1)
Author: K8RI <k8ri@rogerhalstead.com>
Date: Sun, 13 Feb 2011 00:53:50 -0500
I attended a seminar on GeoThermal H&V yesterday pushing the Trane units. They use a variable speed fan that sounds like it may be controlled by pulse width modulation. I asked if they would guarante
/archives//html/RFI/2011-02/msg00060.html (6,685 bytes)

179. Re: [RFI] LCD TV wipes out AM BC band (score: 1)
Author: K8RI <k8ri@rogerhalstead.com>
Date: Tue, 22 Feb 2011 01:10:33 -0500
What in a non CRT set runs on those frequencies? 73 Roger (K8RI) _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
/archives//html/RFI/2011-02/msg00090.html (6,944 bytes)

180. Re: [RFI] RFI U-verse (score: 1)
Author: K8RI <k8ri@rogerhalstead.com>
Date: Sun, 27 Feb 2011 17:17:56 -0500
I didn't think a choke should bother CAT5 or 6. Parallel wires yes, but not groups of twisted pair. 73 Roger (K8RI) _______________________________________________ RFI mailing list RFI@contesting.com
/archives//html/RFI/2011-02/msg00118.html (9,606 bytes)

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