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References: [ +from:ku7t@ku7t.org: 12 ]

Total 12 documents matching your query.

1. [RFI] Array Solutions Filtermax III not making any difference on radio 2. What to check? (score: 1)
Author: Andy KU7T <ku7t@ku7t.org>
Date: Sat, 27 Oct 2018 23:31:42 +0000
Hi, We go the mentioned filter at our contest station. We got S6+ Interference from the run to the multi station. If we switch the bandpass on the run from the band to bypass, the noise level does no
/archives//html/RFI/2018-10/msg00029.html (7,191 bytes)

2. [RFI] Investigating receive noise - got a few questions (score: 1)
Author: Andy KU7T <ku7t@ku7t.org>
Date: Sat, 10 Nov 2018 21:57:59 +0000
Hi, I am trying to sort out receive noise issues with my Flex. I am not exactly sure how clean the spectrum could/should be. I have the feeling that I may be more concerned about this just because I
/archives//html/RFI/2018-11/msg00038.html (8,584 bytes)

3. [RFI] Non-switching wall warts availability? (score: 1)
Author: Andy KU7T <ku7t@ku7t.org>
Date: Mon, 26 Nov 2018 16:49:26 +0000
Hi, I walked around my house with an AM radio and am not pleased. I would like to replace all switching power supplies with the non-switching kind, everywhere in my house. I found this 5V one: https:
/archives//html/RFI/2018-11/msg00082.html (7,229 bytes)

4. Re: [RFI] Solar Edge RFI Update 11/29/18 (score: 1)
Author: Andy KU7T <ku7t@ku7t.org>
Date: Thu, 29 Nov 2018 19:13:44 +0000
All, Is it the same to use 5 cores and just clamp them on a cable one after another compared with using one of the same cores and wrapping the cable 5 times through? I would think yes. Is this true?
/archives//html/RFI/2018-11/msg00107.html (9,327 bytes)

5. [RFI] Investigating receive noise - got a few questions (score: 1)
Author: Andy KU7T <ku7t@ku7t.org>
Date: Fri, 21 Dec 2018 00:24:54 +0000
Thanks for all the great advise and information. Here is an update and a follow up question: I have identified these issues after a few weeks of research: * (Small impact) My own ethernet switch/cabl
/archives//html/RFI/2018-12/msg00046.html (11,608 bytes)

6. Re: [RFI] Investigating receive noise - got a few questions (score: 1)
Author: Andy KU7T <ku7t@ku7t.org>
Date: Fri, 21 Dec 2018 01:12:23 +0000
Ed, I read the Jims RFI prevention pdf and ordered the same ferrites he suggests. Those are all 31s. * The small ones (when I really cannot wind because length of cable prevents it) are some I still
/archives//html/RFI/2018-12/msg00049.html (14,462 bytes)

7. [RFI] Common mode choke on 4 Square feedlines without skewing phasing? (score: 1)
Author: Andy KU7T <ku7t@ku7t.org>
Date: Wed, 23 Jan 2019 06:50:21 +0000
Hi, I am constructing an 80m 4 Square using DXE phasing unit. The instructions clearly say to not add any matching components or decoupling devices like baluns or coils between the phasing unit and t
/archives//html/RFI/2019-01/msg00023.html (7,817 bytes)

8. Re: [RFI] Common mode choke on 4 Square feedlines without skewing phasing? (score: 1)
Author: Andy KU7T <ku7t@ku7t.org>
Date: Wed, 23 Jan 2019 22:57:47 +0000
Thanks for everyones input. I did some measurements. I can do about 4 turns of 5 diameter of the coax and still reach the phasing box, bury the cable in a few spots where it goes over a walkway in co
/archives//html/RFI/2019-01/msg00031.html (11,770 bytes)

9. Re: [RFI] Common mode choke on 4 Square feedlines without skewing phasing? (score: 1)
Author: Andy KU7T <ku7t@ku7t.org>
Date: Tue, 29 Jan 2019 17:23:15 +0000
Jim, thanks for following up. Your messages had gone to the junk folder for some reason. I have now received LMR200-74 and the large 4 inch chokes from Fair-Rite and will try to get 19 turns on there
/archives//html/RFI/2019-01/msg00048.html (16,479 bytes)

10. Re: [RFI] Air Conditioner / Heat Pump recommendations (score: 1)
Author: Andy KU7T <ku7t@ku7t.org>
Date: Thu, 21 Feb 2019 19:40:47 +0000
I have two Trane 13i, and cannot recommend them. Lots of spikes and have not had the time to fix it. I added many cores in the outside unit, but did not help much. I also find it very hard to have te
/archives//html/RFI/2019-02/msg00069.html (15,246 bytes)

11. [RFI] Suggestions for an RFI-clean battery charger/maintainer (score: 1)
Author: Andy KU7T <ku7t@ku7t.org>
Date: Mon, 14 Oct 2019 20:57:46 +0000
Hi, I found a bad battery charger at my neighbors house and would like to replace it with a better one. He will be mostly using it for charging his RAM truck, which has 2 truck batteries in parallel
/archives//html/RFI/2019-10/msg00012.html (7,956 bytes)

12. [RFI] Choke questions (score: 1)
Author: Andy KU7T <ku7t@ku7t.org>
Date: Tue, 21 Jan 2020 15:28:18 +0000
Hi, these may dumb questions (I am a choke newbee, but working myself up to the skillset to build my own to specific needs)... A recommended method and material to use is #31 and a #12 THHN pair of w
/archives//html/RFI/2020-01/msg00105.html (7,222 bytes)


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