Alpha-Delta_DX-A_DX-B_使用说明书手册_2007

ALPHADELTA COMMUNICATIONS.INC.Multi-Band Quarter Wave Sloper Instruction Sheets for Models:。DX-A Quarter Wave Twin Sloper for 160,80 and 40 meters,one leg 67ft.for 80 meters,the other leg 60 ft.for 40 and 160 meters.DX-B Quarter Wave Single Wire Sloper for 160,80,40 and 30 meters,60 ft.overall length.Alpha Delta HF quarter wave slopers are precision made products,manufactured in the U.S.A.In our ISO-9001 certified facility for thehighest quality possible.Due to the design of the ISO-RES inductor coils(not traditional traps),the efficiency of the antennas is outstanding andthey are used worldwide with great DX results around the globe!Stainlesssteel hardware and insulated high tensile strength solid copper 12 ga.wireis used to withstand the most severe environments.When you put it up,itSTAYS up!CAUTION!CAUTION!CAUTION!Never installantennas near power lines or drop lines as contact withthese is DANGEROUS and could cause bodily injury ordeath.Think SAFETY!Any antenna should be installed "in the clear",away from surroundingobjects (metal objects or roof tops)which could de-tune the antenna andimpair performance.Any antenna wire should not be closer than 4-6 ft.from any tree,branch or limb yes,they will de-tune an antenna).Clearance should be at least 20 ft.from any metal objects or roof tops.Ourtest height is 35 ft."In the clear"but lower heights can be used dependingon the installation site and terrain.Specific SWR bandwidths for eachmodel and each band are a function of the installation "site"conditions.