Flawed is a great descriptor for that QST article. Read the author's own conclusion at the end... The article needed some serious peer review which clearly didn't occur. I think he encountered some u
Author: "Donald W. Kane via RFI" <rfi@contesting.com>
Date: Thu, 17 May 2018 14:59:38 -0400
The NEC does not prohibit type NM from being installed in conduit (as long as conduit fill limits are not exceeded) and, in fact, requires it (or other protective means) in 334.15(B) for certain inst
Tnx for the reference. That led to a search and it's always interesting to study the NEC. Some smart folks are behind it. Aside from damage due to overfill, is the fill limit meant to insure no tem
Author: Stephanie WX3K via RFI <rfi@contesting.com>
Date: Thu, 24 May 2018 16:14:05 -0400
Im not sure i understand you inference here when it comes to RFI. This amp operated in accordance to Part 97 is legit assuming it meets the FCC spectral mask. Not a bad deal really considering you ha
Author: "Donald W. Kane via RFI" <rfi@contesting.com>
Date: Sat, 9 Jun 2018 15:55:17 -0400
Perhaps he is confusing heatpumps with evaporative coolers (swamp coolers)? Don WB2BEZ In a message dated 6/9/2018 1:28:10 PM Eastern Standard Time, billp7634@sbcglobal.net writes: I have NO i
Author: "Donald W. Kane via RFI" <rfi@contesting.com>
Date: Sat, 9 Jun 2018 16:00:46 -0400
Quite so....my bad...sometimes I only read every third word when catching up on email backlog....sri. Don WB2BEZ In a message dated 6/9/2018 3:58:02 PM Eastern Standard Time, howard220@gmail.com wr
Author: Stephanie WX3K via RFI <rfi@contesting.com>
Date: Sat, 9 Jun 2018 21:39:37 -0400
Install EMI filters on the lights. Most of the ballasts these days are noisy. I had an issue on 6 meters until i installed EMI filters inline. A typical filter costs about $10-15 Stephanie __________
I suppose it should be mentioned, for completeness, that strictly speaking the inverse square law is inapplicable to that range of low band frequencies where propagation of the signal via ground wav
Fortunately, Cortland , all of the power line noise sources I have had the pleasure to locate exhibited radiation from the vertical ground wire. Effectively, this represents a T-top loaded type vert
Author: Stephanie WX3K via RFI <rfi@contesting.com>
Date: Wed, 13 Jun 2018 15:48:51 -0400
Here is a helpful link https://www.digikey.se/Web%20Export/Supplier%20Content/Lambda_285/PDF/TDKLambda_all_about_emi_epmag.pdf If you search Amazon by entering EMI filter you will find a variety for
At my Florida condo QTH I found a lot of noise being generated by the pool pumps about 200 feet from my indoor antenna. The inverter responsible is from CES Water Quality in Jupiter, FL. The noise is
At $.48/kwh does a properly designed (RFI-wise) solar system become a good economic idea? 73 - Jim K8MR _______________________________________________ RFI mailing list RFI@contesting.com http://list
Well when Riley Hollingsworth was at the helm, things did get done. I know this for a fact, which I shouldn't go into, and no it wasn't about me :) He is certainly missed! Unfortunately with the rec
Mine was easy too. I worked all neighbors with a Heathkit Seneca on 6 meters Got a couple of awards from the FCC office in Chicago! No citations just inquiries. I was 17, scared me until I learned ho
Well, I didn't see loops mentioned, and, there is a chapter on those in the ARRL antenna books too. And I don't mean full-wave loops necessarily either, as I use a 1/4 wave vertical loop on 160 m met
Hello Gents, I'm very close to having some smoke detectors installed in a new addition, and the local code says more are needed, (than what I already have).These will be chained together so if one st
Giving up is the easy way out. Run for cover to EchoLink. hi hi Bob W7KD 73s and thanks, Dave (NK7Z/NNR0DC) https://www.nk7z.net ARRL Technical Specialist ___________________________________________
Author: Tony Brock-Fisher via RFI <rfi@contesting.com>
Date: Fri, 14 Sep 2018 16:00:31 -0400
From my testing, the optimizers internal switchers continue to run (at 200kHz) anytime the optimizer gets power from the panel - therefore during daylight hours. This noise exits the optimizers on bo
Author: Edward Mccann via RFI <rfi@contesting.com>
Date: Fri, 14 Sep 2018 13:43:50 -0700
TonyWhat type ferrite toroid did you use in your three-turn choke? AG6CX Sent from my iPhone _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contestin