This is a little late. I’m very sorry I missed your response.
A generous local audiologist was able to get me a string from one of her suppliers (free).
I needed one because I had bought a (truly barebones!) NoahLink on eBay very inexpensively. I had to locate and separately find or buy everything except the NoahLink module itself - including the Ezurio USB Bluetooth Dongle, the software drivers etc…
I was able get it working.
Thanks very much for replying.