My experience is to use air cored coils in preference to toroid types if possible for high power applications. If you must use toroids keep them cold by using a good high pressure fan or preferably i
Thanks for the clarification, Nick. I found myself thinking that if we exceeded the Curie point of air, we might be facing bigger problems than how to couple power into an antenna. <grin> The proble
<< Following up on myself that (the curie point) does not apply to air cored coils of course. I only read the original message after sending this comment. >> Thanks for the clarification, Nick. I fou
Unless the heat takes you above the curie point in which case you will lose most of the inductance suddenly. Following up on myself that does not apply to air cored coils of course. I only read the
PS : maybe if you take into account that copper at 100°C has a higher resistance than copper at 20°C you might gain a few micro-Watts. Unless the heat takes you above the curie point in which case y
Hello Mal, Thanks for your tips to prevent the loadingcoil from overheating, this will be usefull for those who can get 10A or more into the antenna. Just one remark : Dont waste all those hundreds o
With the advent of large LF amplifiers and proposed super large amplifiers capable of running up to 3kw output to the antenna, there is a requirement to keep the loading coil COOL. Method 1 Use micro
