- 1. Re: [RFI] Common Mode In-Shack Choke (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Wed, 7 Apr 2021 19:05:14 -0700
- Could you wind them much more loosely than depicted in your cookbook? I suppose the reason that's not done is because they wouldn't stay in place? Dave N3WTK _________________________________________
- /archives//html/RFI/2021-04/msg00029.html (7,837 bytes)
- 2. [RFI] #73 beads (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Thu, 20 May 2021 09:28:15 -0700
- How would a series of five #73 beads over RG400 work as a common mode choke? I have a cobweb antenna from MFJ which covers 6,10,12,15,17,20m and their supplied choke is as described. I didn't trust i
- /archives//html/RFI/2021-05/msg00038.html (7,837 bytes)
- 3. Re: [RFI] #73 beads (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Mon, 24 May 2021 08:23:10 -0700
- Okay, so I gave all the #73 beads to my daughter; maybe she can make something clever out of them, jewelry or something. I guess I'm still wondering if I should add a few sets of 2T #31 or if the two
- /archives//html/RFI/2021-05/msg00067.html (8,186 bytes)
- 4. Re: [RFI] #73 beads (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Mon, 24 May 2021 12:48:32 -0700
- Indeed, and I referenced that in my initial email, So the plan then I guess would be two 10T for <30MHz and a "few" 2T for 50MHz. It's been said here that the inter-winding capacitance of the 10T cho
- /archives//html/RFI/2021-05/msg00080.html (10,295 bytes)
- 5. [RFI] small CMC (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Tue, 5 Apr 2022 16:10:33 -0700
- I use K9YC-design CMCs (from the "Cookbook") all around the shack. I'd like to make a small one for a portable EFHW. So in other words I'd like a #31 material core that is smaller than the Fair-Rite
- /archives//html/RFI/2022-04/msg00028.html (7,671 bytes)
- 6. Re: [RFI] small CMC (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Tue, 5 Apr 2022 16:36:53 -0700
- "in the shack" was loose, not literal. They are at the feedpoints of my antennas. Also where the cable internet comes in to the house. So if I have an EFHW, which has a 49:1 transformer, on the trans
- /archives//html/RFI/2022-04/msg00033.html (9,178 bytes)
- 7. Re: [RFI] small CMC (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Tue, 5 Apr 2022 17:28:44 -0700
- Commercial examples of what I was trying to replicate, ... https://www.balundesigns.com/qrp-model-1110-1-1-isolation-choke-balun-1-54-mhz/ https://www.hyendcompany.nl/antenna/portable_mini_hyendfed_a
- /archives//html/RFI/2022-04/msg00035.html (10,152 bytes)
- 8. Re: [RFI] small CMC (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Tue, 5 Apr 2022 20:06:37 -0700
- One of which group, counterpoise or radiating coax? Ah, okay, so this sounds like you are either-or, yes? Either add a counterpoise, or a length of coax then a choke (then presumably another length o
- /archives//html/RFI/2022-04/msg00038.html (8,958 bytes)
- 9. Re: [RFI] small CMC (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Tue, 5 Apr 2022 20:10:16 -0700
- For the record, I don't want to buy either of these company's chokes; I feel like I should be able to make one easily enough, and that's how this email all started -- trying to source that small core
- /archives//html/RFI/2022-04/msg00039.html (9,225 bytes)
- 10. [RFI] LED recessed lighting (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Sat, 18 Jun 2022 15:35:38 -0700
- Does anyone have experience with or can recommend an LED can light that is RFI-friendly? My wife wants recessed lighting in a spare room were turning into a den. 73 de N3WTK _________________________
- /archives//html/RFI/2022-06/msg00027.html (6,311 bytes)
- 11. Re: [RFI] LED recessed lighting (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Sat, 18 Jun 2022 17:25:04 -0700
- oh of course! Why didn't I think of that? Another fellow also responded privately with a model from Home Depot that he uses with success, Commercial Electric model CER6730MWH27 ______________________
- /archives//html/RFI/2022-06/msg00030.html (7,375 bytes)
- 12. Re: [RFI] USB port closing (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Sat, 6 Aug 2022 08:01:04 -0700
- I had a similar problem with the old laptop I use in the shack. I was able to get 17T of my USB cable through a Fair Rite #31 2.4in (2631803802) toroid and have been trouble-free ever since. I did th
- /archives//html/RFI/2022-08/msg00011.html (8,022 bytes)
- 13. [RFI] medical lab RFI (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Wed, 19 Jul 2023 15:07:26 -0700
- Kind of an out of left field question, but do you know of (or know who might know of) companies that test for radio frequency interference? I have a friend who has a fancy medical lab in his building
- /archives//html/RFI/2023-07/msg00029.html (7,732 bytes)
- 14. Re: [RFI] medical lab RFI (score: 1)
- Author: David Hale <astronomerdave@gmail.com>
- Date: Thu, 20 Jul 2023 12:25:00 -0700
- Thanks everyone; I compiled your replies into a response. _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi
- /archives//html/RFI/2023-07/msg00038.html (12,298 bytes)
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