What mix of ferrite??

Should be a #31. See photo

73 Joel W5ZN / ZF2ZN

From: Jussi Eloranta <[email protected]>
Sent: Monday, November 17, 2025 3:54 PM
To: [email protected]; 'ADXA' <[email protected]>
Subject: Re: [ADXA] Switching PS / wall warts

On 11/17/25 15:52, [email protected] wrote:

Is the computer power supply internal or external???

It is external and can be easily replaced.

I have tried ferrites & wrapping it in aluminum foil but still it emits a little.

Jussi (aa6kj)