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update Common mode choke page with additional picture of inside

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Dominic Reich 2025-03-09 12:08:33 +01:00
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commit cc6c8444bb
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2 changed files with 7 additions and 5 deletions
content/equipment/radio-stuff/accessories/homebrew-common-mode-choke
choke-inside.jpgindex.md

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content/equipment/radio-stuff/accessories/homebrew-common-mode-choke/choke-inside.jpg (Stored with Git LFS) Normal file
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content/equipment/radio-stuff/accessories/homebrew-common-mode-choke/index.md
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@ -6,7 +6,7 @@ summary: |
coverCaption: My selfmade common mode choke placed into a neat plastic case
with BNC connectors.
date: 2023-10-26T13:36:26+02:00
lastmod: 2024-09-28T23:48:06+0000
lastmod: 2025-03-09T11:08:33+0000
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showReadingTime: false
@ -16,13 +16,12 @@ showWordCount: false
So this is basically a 140-43 toroid with 9 turns of RG174 connected to
BNC connectors.
It works very well and I have made two measurements recently.
It works very well and I have made two measurements:
{{< figure src="logmag_through.png" caption="The maximum loss is on 10m around 0.2dB" >}}
{{< figure src="logmag_outer.png" caption="It attenuates common mode current with more than 20dB" >}}
I find this okay for now but I still wonder if this can be made any better
(maybe 30dB attenuation?). Would I benefit from even more attenuation?
Another picture with open case:
I will probably find out on another day.
{{< figure src="choke-inside.jpg" caption="A look inside the \"plastic\"" >}}