Think I may have asked this before, but does any one have a source for replacement Pass/reject loops for the DB40XX series VHF cavities. This would be the loop with the variable Johanson ceramic capaciter incorporated for adjusting the Notch. The cavities the loops mount in are about 20"+/- tall and 4"+/-in dia. and the loops mount in a recess in the top end. Any info concerning the constructio of same would be appreciated also. 73's Doug N3DAB
