Owen Duffy wrote in
:

Owen Duffy wrote in
:

...
Search Jaycar's site for a LO1238. If that is what you have, you
could ask them for data.

I should have added that I think it is similar to the L8 material
described in their data sheets.

I have a vague recollection of measuring the inductance of a winding
on the material, and I think the ui was around 1500 which suggests it
is low loss up to a few hundred kHz, perhaps to 1MHz or so.

I am back at home and dug out my measurments for LO1238. I make ui around
1100 at 10kHz (Al ~145nH), so it is a little lower than the L8 material,
probably goes to slighly higher frequency before loss sets in.

Owen