Source of Ferroxcube toroids for the loop counterpoise antenna design.
I've just had an email from Brian, 2E0TCU.
He has bought a batch of the Ferroxcube toroids recommended for my recent loop counterpoise antenna design in the RSGB RadCom magazine.
He is selling the slightly smaller toroid as the original one I specified sold out at the Ferroxcube distributors within a week!
His eBay listing is https://ebay.us/2iDh09