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Re: Band pass filter

 

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. Laughing

73,

-- Dave, N8SBE

-------- Original Message --------
Subject: Re: [BITX20] Band pass filter
From: "Jack, W8TEE via " <jjpurdum@...>
Date: Thu, November 14, 2019 11:07 am
To: <[email protected]>

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.

Jack, W8TEE

On Thursday, November 14, 2019, 10:39:43 AM EST, Doug W <dougwilner@...> wrote:


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?
?
--

--
Jack, W8TEE

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