From 878c310079f0290ab721853d2c9e1a1a760587a5 Mon Sep 17 00:00:00 2001 From: Dominic Reich Date: Sat, 9 Mar 2024 19:54:12 +0100 Subject: [PATCH] update CMC draft --- .../homebrew-common-mode-choke/index.md | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/content/equipment/accessories/homebrew-common-mode-choke/index.md b/content/equipment/accessories/homebrew-common-mode-choke/index.md index e93cbc3..9bec3ab 100644 --- a/content/equipment/accessories/homebrew-common-mode-choke/index.md +++ b/content/equipment/accessories/homebrew-common-mode-choke/index.md @@ -23,10 +23,17 @@ draft: true --- -I've built myself a common mode choke last winter (2022) but haven't created -this page yet. Also I haven't used it much because I haven't been very active -this year. - 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. + +{{< 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? + +I will probably find out on another day. +