barker--williamson all bwd and bwds broadband folded dipoles Benutzerhandbuch
(2)
(7) Remember that the highest amount of energy is radiated at a right angle to the antenna wire, the minimum off the ends (when
the antenna is parallel to the ground). Consider this when selecting map orientation for your antenna. By using an inverted Vee, you may
change the angle of radiation, and therefor affect the distance of transmission at different frequencies. Put simply, the steeper (more vertical
than horizontal) an inverted Vee is made, the more it will favor DX, and tend to skip over local stations at low frequencies. We recommend
roughly 30 degrees angle down on a leg from horizontal for best general, overall results.
change the angle of radiation, and therefor affect the distance of transmission at different frequencies. Put simply, the steeper (more vertical
than horizontal) an inverted Vee is made, the more it will favor DX, and tend to skip over local stations at low frequencies. We recommend
roughly 30 degrees angle down on a leg from horizontal for best general, overall results.
INSTALLATION INSTRUCTIONS
(1) Determine your supports, paying attention to best possible height , antenna configuration, and alignment. Trees, sides of a building,
utility poles, etc. make good supports. Do not install parallel to power lines if it can be avoided.
utility poles, etc. make good supports. Do not install parallel to power lines if it can be avoided.
(2) Unpack the antenna. Lay it on the ground, the two rolls seperated and the components laying in the middle. DO NOT UNCOIL UNTIL
YOU ARE READY.
YOU ARE READY.
(3) Cut enough polyester rope ( 3/16" diameter ) and prepare ends as shown in Figure # 1.
(4) Uncoil one half of the antenna. Avoid twisting, kinking or springing by keeping the antenna taut during uncoiling. Let the shipping
tube rotate in your hands - do not pull the wire off the ends as it will kink.
tube rotate in your hands - do not pull the wire off the ends as it will kink.
(5) Install the rope as shown in Figure # 1. If you keep the top arm of the rope 1" - 3" shorter than the bottom arm , the antenna will hang
in a proper vertical position instead of rotating flat.
in a proper vertical position instead of rotating flat.
(6) Repeat steps # 4 and # 5 to the other side of the antenna.
(7) Attach your coax cable and raise the antenna up in the air. Again avoid twisting, kinking or springing.
(8) Run the coax to the station. Run the coax down to the ground, and then perpendicular to the antenna for as far as possible. If this
is not done properly, you will transmit onto the shield of the coax, causing high SWR and transmitter power cutback. Only use a sufficient
length of coax to reach the station
is not done properly, you will transmit onto the shield of the coax, causing high SWR and transmitter power cutback. Only use a sufficient
length of coax to reach the station
(9) Your antenna is ready for operation. It is broadband and pretuned at the factory for an average SWR of 1.4:1 to 2.0:1 in HF depending
upon the frequency used and surrounding objects, ground conditions, etc. You may find that in extremely bad locations the use of an
antenna tuner will be helpful. SWR of 2:1 to 3:1 should be expected on 6 meters without a tuner.
upon the frequency used and surrounding objects, ground conditions, etc. You may find that in extremely bad locations the use of an
antenna tuner will be helpful. SWR of 2:1 to 3:1 should be expected on 6 meters without a tuner.