Posting this for a friend. Contact him directly. 73, Mike NF4L FOR SALE by non-smoker; SN 3896 K3/100 6K,2.8,1.0,400,250 8 pole filters KRX3 with 2.7 KAT3 KDVR3 KXV3 PR6 P3(SN 1294) $4200 plus pay pal charges or USPS money order, I pay shipping CONUS. K4UTE at COMCAST.NET Dick K4UTE