I am reposting FS a late (Ser. No. 4Ixxxx) Mark V Field with Yaesu YF-115C 500 Hz CW filter in 3d IF and INRAD 721-C 500 Hz CW filter in sub-receiver. Pristine condition. Photos available. Please reply offline. Thanks es 73, John, W3ULS <w3uls at 3n.net>