A magnetic member 2 for an nonreciprocal circuit is fitted in the large hole and {TAIL ~ a magnetic member} 3 for {HEAD ~ frequency characteristics regulation} is fitted in each of the small holes 
A magnetic member 2 for an nonreciprocal circuit is fitted in the large hole and { TAIL ~ a magnetic member } 3 for { HEAD ~ frequency characteristics regulation } is fitted in each of the small holes
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH