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Old 12-31-2018, 05:03 AM
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spacecase0 spacecase0 is online now
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Join Date: Nov 2014
Posts: 396
velocity factor of black iron oxide ?

anyone know velocity factor of black iron oxide powder ?
I am trying to design something and can't seem to figure out how fast radio waves go through the iron oxide powder, like the kind you find in copy toner.
I know some of you have made your own transformer cores,
and hope someone already knows this answer.
I have searched the web for a few weeks now and just can't find the answer.
thinking about a frequency in the 146MHz range
but would be up for data for any frequency
seems like some of the ferrite cores might be similar, but not sure about that.
I just don't want to have to measure this for myself as I don't think I have the hardware to do it accurately.

Last edited by spacecase0; 12-31-2018 at 05:08 AM.
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