Here is a link to the thread in which Wally publishes some relevant measurements from L2.
http://68kmla.org/forums/viewtopic.php?f=7&t=18725&p=176740&hilit=ferrite#p176740
http://68kmla.org/forums/viewtopic.php?f=7&t=18725&p=176740&hilit=ferrite#p176740