For ferrite cores which will be used to suppress noises on cables, ONLY use ferrite #31.
Fiar Rite 04 31 17 64 51 is a split core “Snap It”. with a 19mm hole. Easy to wind cable through it.
- Order for more than 50 Euros at mouser.com, and you get rabat, AND free shipping. ç
Ferroxcube 3S4 material is equivalent. Ring core 36/23/15-3S4 Is available at dx-wire.de .
On my site www.pa0nhc.nl is a lot of info, and an article in English about my active receiving loop antenna :
Read : “Construction details and testing”. At the bottom of this PDF you find the instruction for denoising.
Also read : :”Denoising the external power supply”
“Blocking mains related noises”.
The article “Common Mode Chokes” is at the moment only in Dutch language, as it is a translated subset of a very detailed article by K9YC. I will translate it in Engles, so you can read the most useful info it here later.
DO NOT use other ferrites. Read why.
73’s, Nico pa0nhc.
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Verzonden: vrijdag 13 maart 2020 08:54
Onderwerp: Re: [SDR-Radio] Can You Recognize This QRM Nightmare That Just Began?
Mouser UK 623-0431177081
On 13/03/2020 07:27, f5mwa wrote:
Many thanks for the info on the noise suppressor (via M0NWK)
No way to find the P/N you or also M0NWK have given i.e. Fair-Rite #043177081.
Mouser or even Fair-Rite do not have such reference #.
Can you please specify your source ?
Many thanks in advance