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1. [TowerTalk] Ferrite- Type 31 Material (score: 1): Author: Richard Zalewski <dick.w7zr@gmail.com>; Date: Sat, 18 Dec 2004 09:14:14 -0700; I continue to do research on selecting the correct ferrite for HF RFI problems. What I have found so far is that it appears that Type 31 material is best suited for 1-30 Mhz. This is not the usual 43; /archives//html/Towertalk/2004-12/msg00340.html (7,748 bytes)
2. Re: [TowerTalk] Ferrite- Type 31 Material (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Sat, 18 Dec 2004 10:48:02 -0600; I agree with your assessment. In general, you will achieve higher R over the broadest frequency range in the HF spectrum with #31 than with 43, 44, 77, or 78. You can "tune" the peak attenuation by v; /archives//html/Towertalk/2004-12/msg00342.html (7,993 bytes)

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