I replaced a 3C85 matching transformer with a LOPT on my 137 kcs TX with identical results. The LOPT from the junk box cost nothing. Some are marked 3C8, others have no marking so I assume all are si
Hi Chris. You can find in the UK toroidal cores in small quantities and no minimum order at: http://herostechnology.co.uk/pages/pages_comp/micrometals.html In the same page you can download WinToroid
Hi Chris, <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> The references 3C85 and 3C90 specify only the material grade but no the shape and size of the toroid. We are mor