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Re: [RFI] 2.4" OD #31 toroids

To: rfi@contesting.com
Subject: Re: [RFI] 2.4" OD #31 toroids
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Tue, 31 Jan 2012 17:34:37 -0800
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
On 1/31/2012 11:32 AM, Pete Smith N4ZR wrote:
> Jim,I had assumed that I could achieve an impedance of over 5000 ohms
> with a single #31 core and 14 turns of RG-59, based on Figure 18A of
> your ferrite tutorial.  I see that your later graphs using RG-8X assume
> a 5-core stack, but achieve higher impedance with fewer turns.  For a
> single-band application, I'd think a single core per choke in that
> center-ground arrangement would be good enough, wouldn't you?

Yes.

73, Jim K9YC
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