LF: Core efficiency

[G0MRF@aol.com]

In a message dated 6/11/02 2:09:19 PM GMT Daylight Time, g4jnt@thersgb.net writes:


> Thought it felt a bit dubious,  but I hadn't got the core loss information 
> available so couldn't justify the feeling.   Anyway, isn't 2 mix - the red 
> coloured one -  the wrong material for this frequency ?  I thought that was 
> meant for the 2 - 20 MHz region.


I tried the -3 material which is the next material up from the -2 with slightly higher permeability. Even with fewer turns of larger diameter wire, the losses were 50% up on the T225-2.

73

David  GOMRF