The HAM Radio Operator's Antenna Handbook

QUICK INDEX

An improved 6 Meter "High-Performance" Base-Station Dipole.

HF Antenna Cutting Chart

VHF & UHF Antenna Cutting Chart

Determine correct spacing between antennas to achive proper isolation.

A two meter dipole

It's very portable and EZ to build; A TV twin-lead two meter J-Pole

Detailed drawing of a two meter "J" Pole antenna.

Detailed drawing of a six meter "J" Pole antenna.

Design your own "J" Pole antenna.

Design your own QUAD antenna.

A 4 element, six meter QUAD design using Design-A-Quad.

Antennas and Antenna RF Meters

BUT FIRST.... let's review some antenna "basics" in pictorial form.

CLICK ON the small graphic to view full size.
Half-Wave HF Antenna Cutting Chart.

CLICK ON the small graphic to view full size.
VHF/UHF Cutting Chart

CLICK ON the small graphic to view full size.
Antenna Isolation / Spacing Charts

A=Benz-O-Matic propane torch; B=Lead-Free solder; C=Tape measure: D=Tubing cutter; E=Sharpie marking pen; F=Solder Paste; G=1/2 inch copper caps; H=Hardcopy of the above drawing; I=Wet Towel; J=PreCut, ready to assemble parts of the 2 meter J-Pole.

CLICK HERE AND DESIGN YOUR OWN "J" Pole

Design-A-Quad Antenna

Calculate the total wire length for each element of a quad antenna.
REFLECTOR = 1030 / F (MHz)
DRIVEN = 1005 / F (MHz)
DIRECTOR 1 = 975 / F (MHz)
DIRECTOR 2 = 960 / F (MHz)

ELEMENT SPACING between:
1) Reflector & Driven Element = 730 / F (MHz)
2) Driven Element & 1st Director= 600 / F (MHz)
3) 1st Director & 2nd Director = 600 / F (MHz)

Enter the formula for the antenna calculation
Divided by Freq MHz

Total wire-length in feet is FEET.
Total wire-length in inches is INCHES.
One of four sides in FEET = <- Use ONLY this number for "element spacing" when entering the element spacing numbers (constants; 730 or 600) above!
Total all spacing measurements (in inches) then add 2 inches for each end.

THE QUAD SHOWN BELOW IS AN EXAMPLE OF A QUAD DESIGN USING DESIGN-A-QUAD ABOVE

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