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References: [ +from:K8RI@rogerhalstead.com: 493 ]

Total 493 documents matching your query.

241. Re: [RFI] RFI & Alarm Systems? (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Thu, 02 Aug 2012 22:27:30 -0400
There is one I drive by nearly every day that wipes out a portion of the 440 band. 73 Roger (K8RI) _______________________________________________ RFI mailing list RFI@contesting.com http://lists.con
/archives//html/RFI/2012-08/msg00002.html (7,180 bytes)

242. Re: [RFI] Emerging dev platform: The electrical grid (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Fri, 03 Aug 2012 00:24:38 -0400
Just remember that with the smart grid and smart appliances you have just increased the ability of the thing to fail several times over. The smart grid is much more vulnerable than the old one that w
/archives//html/RFI/2012-08/msg00004.html (8,347 bytes)

243. Re: [RFI] RFI & Alarm Systems? (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Sat, 04 Aug 2012 02:52:18 -0400
That was me. It's a motion detecting alarm system. I haven't used the 440 band in the car for some time except for cross band repeat, but back when I was operating 440 mobile I'd hear it over quite a
/archives//html/RFI/2012-08/msg00012.html (10,410 bytes)

244. Re: [RFI] Dell D505 PA-10 PS (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Sun, 12 Aug 2012 18:19:29 -0400
1 Gig is far more than enough speed to run XP and 3 Gig of RAM is all a 32 bit system can use. The problem is usually all the *stuff* they run in the background and particularly the packaged software
/archives//html/RFI/2012-08/msg00058.html (12,833 bytes)

245. [RFI] Motors/controllers and something to think about (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Thu, 16 Aug 2012 01:30:49 -0400
The issue has dealt with specific makes and models with and without RFI, but as PWM is by its nature an RFI generator we need to stop and think about how companies (any company) acquires the motors a
/archives//html/RFI/2012-08/msg00083.html (8,648 bytes)

246. Re: [RFI] Motors/controllers and something to think about (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Thu, 16 Aug 2012 02:28:57 -0400
I'm still trying to wrap my mind around building switching power supplies<:-)) But when a company contracts out motor controllers they are interested in performance and cost. One thing companies are
/archives//html/RFI/2012-08/msg00085.html (9,460 bytes)

247. Re: [RFI] Raucous ruckus... (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Sat, 01 Sep 2012 22:04:11 -0400
Um, isn't this thing doing exactly what it is supposed to be doing? Kind of like those underground cable locators, that send an RF signal into the cable, so you can locate it with a radio. For the cu
/archives//html/RFI/2012-09/msg00002.html (10,596 bytes)

248. Re: [RFI] Reducing RFI from Switching Power Supplies (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Tue, 11 Sep 2012 23:54:37 -0400
Avoid the cheap low end low power units. They dont last long, fail sooner, and can run hot. Choose a size from a good vendor that has the capacity to run the items it is powering for about 15 - 30 mi
/archives//html/RFI/2012-09/msg00055.html (9,968 bytes)

249. Re: [RFI] Noise changes when room lights turn on / off UPDATE (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Thu, 13 Sep 2012 23:46:39 -0400
Just an update on the noise: Turned off all breakers in the house except for one that powers a single A/C outlet in the shack. The noise was still there. Friend has not come through with his battery
/archives//html/RFI/2012-09/msg00072.html (12,125 bytes)

250. Re: [RFI] ISOBAR (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Tue, 18 Sep 2012 01:17:46 -0400
Strange choice of names as Isobar is a symbol used on weather maps. OTOH I had never heard of them as a company. 73 Roger (K8RI) I have an old unit that performs well. Not sure if their past perform
/archives//html/RFI/2012-09/msg00106.html (8,538 bytes)

251. Re: [RFI] ISOBAR (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Tue, 18 Sep 2012 13:39:02 -0400
Two questions: 1) That 40 feet of bare #2 wire between the entrance panel and power line ground - I assume it is run outside, and if so, how many ground rods are on it? 2) Does the wire provide all o
/archives//html/RFI/2012-09/msg00121.html (18,455 bytes)

252. Re: [RFI] ISOBAR (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Wed, 19 Sep 2012 17:18:20 -0400
All I can say about my post is this: IT WORKS. YES, the power ground "bounces" up and down to the tune of lotsa' kV, no doubt about it, during a strike. However, ALL of the grounds are bouncing at on
/archives//html/RFI/2012-09/msg00133.html (15,429 bytes)

253. Re: [RFI] ISOBAR (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Wed, 19 Sep 2012 21:50:08 -0400
And a really close strike can induce substantial voltages in interconnecting wires. A lightning strike a mile away can induce well over a 1000 volts per meter of wire so think what a close one can do
/archives//html/RFI/2012-09/msg00135.html (9,437 bytes)

254. Re: [RFI] Start up Sound file... (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Wed, 10 Oct 2012 02:01:26 -0400
On 10/9/2012 8:42 PM, KD7JYK DM09 wrote: I've heard this sound in the past and seen/heard a mercury vapor lamp used as a yard light produce this sound near a friends house a few years ago. When the l
/archives//html/RFI/2012-10/msg00027.html (8,113 bytes)

255. Re: [RFI] CFL Noise Update - Neighbor Removes Burned Out CFL (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Wed, 10 Oct 2012 02:15:01 -0400
On 10/10/2012 12:08 AM, Tony wrote: On 10/9/2012 10:23 AM, qrv@kd4e.com wrote: Tony, Do you have a common electrical system? Could his circuit have a bad ground or neutral and it is using a path thro
/archives//html/RFI/2012-10/msg00028.html (12,918 bytes)

256. Re: [RFI] CFL Noise Update - Neighbor Removes Burned Out CFL (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Wed, 10 Oct 2012 02:22:31 -0400
On 10/10/2012 12:08 AM, Tony wrote: On 10/9/2012 10:23 AM, qrv@kd4e.com wrote: Tony, Do you have a common electrical system? Could his circuit have a bad ground or neutral and it is using a path thro
/archives//html/RFI/2012-10/msg00029.html (11,175 bytes)

257. Re: [RFI] Fluorescent Light RFI (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Thu, 25 Oct 2012 01:00:57 -0400
The XYL says I've been procrastinating long enough about installing a 48" fluorescent light in the garage. First thing that came to mind is RFI. Are there any brands that are known to cause interfere
/archives//html/RFI/2012-10/msg00041.html (9,210 bytes)

258. Re: [RFI] rfi problem (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Wed, 31 Oct 2012 17:09:39 -0400
On 10/31/2012 1:19 PM, Michael Brown wrote: I've had this RFI problem for 5 months now. I thought it was a power line as I've had 4 in a 10 year period. They local utility says they can't find anythi
/archives//html/RFI/2012-10/msg00050.html (8,161 bytes)

259. Re: [RFI] rfi problem (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Thu, 01 Nov 2012 18:38:57 -0400
On 11/1/2012 1:55 PM, Patrick Dyer wrote: This Sep 1983 CATV egress (Ch 4, zero-beat local off) was due to an east-adjacent illegal tap (the days before Texas had enacted theft-of-service statutes) h
/archives//html/RFI/2012-11/msg00008.html (9,718 bytes)

260. Re: [RFI] rfi problem (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Thu, 01 Nov 2012 18:53:35 -0400
I'm sure I've mentioned this in the past... but many years ago, I lived in Alma MI. I noticed that when driving through many intersections I had problems receiving the quadrant repeater which was onl
/archives//html/RFI/2012-11/msg00009.html (12,858 bytes)


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