On 11/20/2024 11:55 AM PST Lawrence Stoskopf <[email protected]> wrote:
 
 
 
Amazon has access to many toroids.  If you know the suffix number on the -37 size you can buy 10 or so for maybe $10 or so.  They may vary a bit, but most ferrites aren't frequency  dependent as far as exact inductance so....
 
 
I do buy components on Amazon, but I almost always verify they're what I expected before using them. The supply-chain integrity is highly variable there. Buyer beware.
 
Dana  K6JQ