The Musings of Smudge [Cyril Smith

[Mr XYZ]

I think this is an excellent thread for commenting on, especially as Smudge has presented so much hard data on the special properties of those FERRITES, and this is where I want to focus - on the particular point that I see as vital - that these ferrites have a peak in their Permeability around 5 MHz! - This happens to be the same frequency range that was used in the mysterious German ALPHA-THETA devices that I presented some photo-copies of here last year, and which are connected with the work of Hans KOHLER - I will attach these copies again here for comparative clarification, and to refresh our memories. After staring that these documents about the Alpha-Theta devices and doing some digging, I found that there was NOTHING else out there on the net about them, and probably still isn't, but I did find out that the Krupp company made this same MnZn  ferrite decades ago (Koerex 300-R) which also happens to be pulsed in these diagrams with the same frequency of 5MHz! - obviously with some optimum effect! I also found a reference in the works of an older writer Brailsford that confirms the same fact that specific MnZn ferrites have a peak permeability at this frequency, which Smudge has more or less coroborated, and which is refreshing to see. I will now stop being wordy and just the attached photocopies speak for themselves - - - but please remember that these 3 documents are ALL the info I have on them/it.

[ramset]

A few more Musings from Cyril

respectfully
Chet K