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1. Re: [RFI] Recent RFI status - Direct TV and Dish? (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Mon, 26 Aug 2013 12:51:53 -0700; I've had DirecTV for about 10 years, and never had any noticeable issue with RFI from or to my own installation. I can blast away with 1500 watts in a densely populated neighborhood, with no complain; /archives//html/RFI/2013-08/msg00055.html (8,590 bytes)
2. Re: [RFI] 160 M triggers my lawn sprinklers (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Wed, 13 Nov 2013 16:06:52 -0700; At the controller end, I have a Corcom AC Line Filter, a big toroid with many turns on the wire going to the valves, and bypass caps on each valve wire. I think it is solid now, but I still unplug th; /archives//html/RFI/2013-11/msg00028.html (9,211 bytes)
3. Re: [RFI] [Elecraft] Noise, RFI ? (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Wed, 19 Feb 2014 11:23:40 -0700; Since the noise extends into the AM broadcast band, you should be able to DF it quickly with a portable AM radio with its loopstick antenna. Since the loopstick is bi-directional, you will have to DF; /archives//html/RFI/2014-02/msg00114.html (9,611 bytes)
4. Re: [RFI] clamp on ferrites at Mouser (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Sat, 14 Jun 2014 12:05:03 -0700; Arrow Electronics is a good place to buy ferrites, if you can find the ones you want in stock. They have some of the ones mentioned below at good prices. Their stock comes and goes, so it's good to k; /archives//html/RFI/2014-06/msg00072.html (10,843 bytes)
5. [RFI] Wal-Mart LED light bulb (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Fri, 3 Jul 2015 15:13:42 -0700; I purchased my first LED light bulb a few days ago, a non-dimmable 60 watt equivalent, "Great Value" brand. It looks good (slightly pinkish), and I couldn't find any interference on any of the HF ban; /archives//html/RFI/2015-07/msg00005.html (6,827 bytes)
6. Re: [RFI] Finding house noise sources (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Mon, 18 Jan 2016 15:49:02 -0700; 1. Walk around the house with a portable AM radio, or 2. Connect a long piece of coax with a short probe on it to your station RX, and walk around the house with the coax/probe. Dave Hachadorian, K6L; /archives//html/RFI/2016-01/msg00015.html (11,131 bytes)
7. Re: [RFI] 60W Great Value LED, forgot to mention... (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Tue, 9 Feb 2016 22:28:49 -0700; I've converted my house to the Great Value 60 watt dimmable LED's. They were $1.88 for a long time, but are now $2.44. I haven't noticed any heat, buzzing or RFI. But then again, I didn't go probing; /archives//html/RFI/2016-02/msg00051.html (9,934 bytes)
8. Re: [RFI] 15 M Noise follow up (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Sat, 4 Jun 2016 07:47:26 -0700; He is probably using a Commercial Ballast instead of a Residential Ballast. You could get an electrician to replace his ballast. Both types are available at Home Depot or Lowes. The residential ones; /archives//html/RFI/2016-06/msg00024.html (8,884 bytes)
9. Re: [RFI] Florescent TUBE style, LED replacements (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Tue, 7 Jun 2016 17:48:14 -0700; I have also used the www.earthled.com ones (based on K7TJR's recommendation). They sell both types, ballast bypass and ballast compatible. All of the ones I bought are ballast bypass. For the ballast; /archives//html/RFI/2016-06/msg00044.html (9,217 bytes)
10. Re: [RFI] led bulbs? (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Thu, 29 Sep 2016 07:45:31 -0700; I've switched the whole house over to Wal-Mart's 60W dimmable bulbs. They are quiet as far as I can tell, and they are $1.88 here, probably subsidized by the local electric company. The 100W LED's ar; /archives//html/RFI/2016-09/msg00114.html (8,269 bytes)
11. Re: [RFI] led bulbs? (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Thu, 29 Sep 2016 11:15:01 -0700; Its a shame to see new energy efficiency standards circumvented by the rough service loophole. These bulbs are even more inefficient than the regular old incandescent bulbs - fewer lumens for the sam; /archives//html/RFI/2016-09/msg00118.html (11,288 bytes)
12. Re: [RFI] led bulbs? (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Thu, 29 Sep 2016 14:00:06 -0700; The bulbs Howard mentions are Halogen bulbs. Yes, they are more efficient than the old incandescents, and cost about $2 each. LED Bulbs are frequently subsidized by local power companies, and for abo; /archives//html/RFI/2016-09/msg00121.html (10,063 bytes)
13. [RFI] Unusual subharmonic RFI (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Fri, 11 Nov 2016 14:13:08 -0700; Here's the story. When I transmit a nice clean 200 watts CW on 14.060 MHz, I can hear a loud, buzzy, broad signal centered on 7.030, and I can also hear its third harmonic on 21.090. The broad signal; /archives//html/RFI/2016-11/msg00025.html (8,960 bytes)
14. [RFI] Ferrite prices (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Mon, 5 Dec 2016 12:21:14 -0700; I ordered a bunch of ferrites today and thought I would share the pricing. These are the best prices that I could find on small quantities. Arrow Electronics 0431173551 .74 i.d. clamp-on, mix 31, $2.; /archives//html/RFI/2016-12/msg00012.html (6,735 bytes)
15. Re: [RFI] A note from Sangean about switching power supplies (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Sat, 7 Jan 2017 08:45:04 -0700; USA/Global energy efficiency standards move manufacturers toward switching supplies: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwjI2qaUr7DRAhUWwGMKHfLgAksQFggdMAA&url=h; /archives//html/RFI/2017-01/msg00016.html (11,470 bytes)
16. Re: [RFI] USB qrm - what to do? (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Mon, 13 Mar 2017 07:00:40 -0700; Page 10 of K9YC's Noise Suppression Manual suggest 7 turns on a 0431177081 Snap-on for 80/160. I think 7 turns will fit in there. I've got an HDMI cable with 5 turns, and it looks like I could jam tw; /archives//html/RFI/2017-03/msg00021.html (9,956 bytes)
17. Re: [RFI] Comcast - 80 meters rings phones (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Sun, 19 Nov 2017 10:19:41 -0700; If ALL of the phones are ringing, I suspect the Comcast box is telling them to ring. I would try a good K9YC 80 meter choke on the phone line right where it comes out of the Comcast box. Then I would; /archives//html/RFI/2017-11/msg00045.html (8,476 bytes)
18. Re: [RFI] Comcast - 80 meters rings phones (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Sun, 19 Nov 2017 11:10:14 -0700; Also, if he is using a DECT6 phone system, the master phone unit could be the problem, ringing itself and all of the slaves. Try temporarily disconnecting the master, and temporarily substitute a con; /archives//html/RFI/2017-11/msg00047.html (9,423 bytes)
19. Re: [RFI] Keyboard (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Sat, 3 Mar 2018 10:14:39 -0700; I've never had a problem with this wireless keyboard/mouse: https://www.walmart.com/ip/Logitech-MK270-Wireless-Keyboard-Mouse-Combo/28540111 Dave Hachadorian, K6LL Yuma, AZ Is RF getting into a keybo; /archives//html/RFI/2018-03/msg00007.html (9,064 bytes)
20. Re: [RFI] TinySA as an RFI research tool (score: 1): Author: "Dave Hachadorian" <k6ll.dave@gmail.com>; Date: Wed, 16 Jun 2021 20:24:20 -0700; I have one, and It's not very sensitive, so a preamp is required. I think a portable receiver, directional antenna and a discerning ear are better tools. Dave Hachadorian, K6LL Yuma, AZ Hi, What do y; /archives//html/RFI/2021-06/msg00050.html (8,289 bytes)

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