Specifications:
Overall height when fully extended - 46 feet (height of vertical radiating element)
Diameters of vertical radiating element tubing- First 18' is 2" dia. x .125" wall (1/8") 1.75" dia. x 24" long x .125" wall coupler Second section is 1.5" dia. x .058" wall 12' Third section is 1.375" dia. x .058" wall 11' Fourth section is 1.25" dia. x .058" wall 5' Please Note: The actual sections are 6 feet coupled with the next smaller size tubing, the coupler is 18" long. In other words the antenna is shipped in 6 foot lengths. Tilt base dimensions- Back plate-5/8" thick x 6" wide x 12" high aluminum Tilt Arm-5/8" thick x 4" wide x 18" high aluminum Black CNC machined Acetal (Delrin) UV stablized clamps 1 1/2" wide x 3 1/8" high x 3" wide 3/8"dia. Grade 5 bolts and nylon insert lock nuts used through clamps for ultra ridgid assembly. Requires a nominal 2" dia. x .25" wall pipe x 5' long set in concrete for mounting to the base. Safety bolts (1/2" dia.) pass through tilt arm to draw arm into back plate. Tilt Arm pivot bolt-1/2" dia.
Antenna Frequency range- 40-12 meters with very low take off angle
Description:
Heavy Duty vertical dipole antenna for the 40-12 meter amateur radio band.This is a low angle radiator which will provide excellent DX performance. No radials required. Lower section consists of 18 feet of 2" OD x .125" wall tubing for a stiff and rigid base section and lighter tubing on the upper sections to reduce wind load and weight. Antenna is pretty much self supporting but we recommend guying (guying clamp designed just for that purpose is also available) for very high wind environments . The rugged radiating element sits on similiarly designed tilt over base. This base provides quick and smooth raising and lowering and has features like a stop block to make lining up the holes in the tilt arm very easy without having to line them up by eye. The base is equipped with 3 U bolts and our own machined V saddle clamps so that if a mounting pipe of slightly greater or less than 2" dia. is used the clamps will still exert all their force. You can use a smaller dia. pipe but we do not recommend smaller than 2".
About feeding this type of antenna: Antenna needs to be fed with 450 ohm open window line and then to a 4:1 tuner balun with as short as possible run of 50 ohm coax to the tuner. (either external tuner or one built into radio)
Radials not required