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Toroids are self-shielding.
Axials need to be mounted at right angles to minimize coupling between them. If you have three, you can mount them in the x, y, and z planes.
At this point, most folks just give up and use toroids.
-- Dave, N8SBE
-------- Original Message --------
Subject: Re: [BITX20] Band pass filter
From: "Jack, W8TEE via Groups.Io
Date: Thu, November 14, 2019 11:07 am
I'm a software guy, so probably shouldn't answer that. My gut says wound toroids are always better, but the axials worked fine for me. Some EE-type can give a better answer.
On Thursday, November 14, 2019, 10:39:43 AM EST, Doug W <dougwilner@...
On Thu, Nov 14, 2019 at 08:15 AM, Jack, W8TEE wrote:
I built a QRP version for my 49-er that works quite well.
At QRP levels is there an advantage or disadvantage to using wound toriods versus radial inductors (or even SMD), especially on the receive side?