Does anyone have any info on this duplexer set made by K&L Microwave? Eight 11" tall, 3-3/4" diamter black aluminum "cans" in a 16" wide aluminum frame--four cylinders per side. On top of the frame at one side is a BNC antenna port, at the other end of the frame there are RX and TX BNCs. The interconnecting/branch cables are hard metal tubes (about 1/8" diameter a la mobile duplexers) that "snake" across the top of the assembly.
Each cylinder has what appears to be an inspection port on top covered by an adhesive "dot"; lifting the dot seems to give a slight glimpse at what appears to be the coupling loop. Tuning appears to be from the bottom via a slotted screw held by a nut. The set shows a number 50140 which may or may not be a model number. While K&L are still in business, they don't seem to keep info on older or obsolete products. If this is, indeed, a 220 MHz unit (or close enough for ham work), it will have been worth the $20 hamfest gamble; otherwise... Tnx es 73 de K5IQ Bob
