LF: Torroid information

["Larry Kayser" <kayser@sympatico.ca>]

Greetings All:

I have four large toroids that were bought some years ago by a chap for use
in amateur radio.  I came into them after he passed on.  They are labeled
144T500 - 3C5.  I have seen somewhere on the many LF pages a reference to a
material type "3C5", so I am asking if anyone can tell me about the
characteristics of these devices.

Larry
VA3LK