Timeline for Dipole increased CM current using choke balun
Current License: CC BY-SA 4.0
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| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 28, 2019 at 6:00 | history | tweeted | twitter.com/StackHam/status/1166591358875910151 | ||
| Aug 27, 2019 at 18:22 | vote | accept | Peter Buxton | ||
| Aug 24, 2019 at 18:37 | history | edited | Peter Buxton | CC BY-SA 4.0 |
added 91 characters in body
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| Aug 24, 2019 at 18:19 | answer | added | hotpaw2 | timeline score: 1 | |
| Aug 24, 2019 at 17:03 | answer | added | Peter Buxton | timeline score: 4 | |
| Aug 24, 2019 at 3:09 | comment | added | Peter Buxton | Both documents suggested above are a wealth of information. I have an FT140-43 torroid that I bought to fit in the balun enclosure. Maybe there is something not right about that old ferrite rod I used. I'll make a torroid balun and report back. I don't know how my 1.4" torroid core compares to the 2.4", but in the charts the 4" compared to the 2.4" uses the same 12 turns. | |
| Aug 24, 2019 at 1:51 | comment | added | Chris K8NVH | Even easier... go here: audiosystemsgroup.com/2018Cookbook.pdf and find page 7. 12 turns around a 2.4" OD #31 toroid core. | |
| Aug 23, 2019 at 23:35 | comment | added | Mike Waters | Peter, I had the same problem. But after printing it out and carefully studying what this genius was saying, a light bulb came on. Perhaps we all can help you sort out what is applicable to you. Actually, my balun was made from his previous edition. | |
| Aug 23, 2019 at 21:15 | comment | added | hobbs - KC2G | If nothing else, you changed the length of the feedline by adding the balun you made, which may have moved a high-current point of the standing wave onto your clip-on meter. | |
| Aug 23, 2019 at 20:42 | comment | added | Peter Buxton | @Mike Thanks, I've been through that document a few times before and it is great, but with so much related information I have a hard time finding one particular part that answers my question(s). From my results above, I'm inclined to just skip using a balun but I'm trying to understand what it's doing to my feed line. | |
| Aug 23, 2019 at 19:35 | comment | added | Mike Waters | Perhaps it is resonant. In any case, do yourself a favor and build a foolproof, wideband common-mode choke using coax in lieu of wire (that's what I always do) based on this. | |
| Aug 23, 2019 at 19:12 | history | asked | Peter Buxton | CC BY-SA 4.0 |