Excellent gain 2m 144-146 MHz and 430 – 440 MHz 70cm antenna. Wide-band dual band antenna. Low SWR on all frequencies.

 

 

Dipole, balun and connector view:

 

 

Goliath Bracket View:

 

 

Boom end:

 

 

All elements marked:

 

 

Electrical Specifications 2 meter
Frequency Range:	144 – 146 MHz
Free Space Forward Gain:	11.2 dBi
Front to Back Ratio:	26 dB
Polarization:	Horizontal
Nominal Input Impedance:	50 Ohms
SWR Across Entire Band:	< 1.2
Maximum Power Input:	100 W
Matching Method:	Direct feed through RG316 teflon common mode choke (current balun)
Connector:	“N” (Common connector for both bands)
Mechanical Specifications 2 meter
Boom Length:	2 m
Boom Size:	20 x 20 mm
Number of Boom Pieces:	2
Element Diameter:	4 mm Aluminum rod
Dipole Diameter:	8 mm hard Copper tube
Number of elements:	6
Longest element:	1.03 m
Element Mounting Position:	Below the Boom.
Mounting Mast Diameter:	43 – 70 mm 1-11/16″ – 2-3/4″ OD
Survival Wind Speed:	150 km/h
Transportation Length:	1.2 m
Antenna Weight:	1.7 kg
Electrical Specifications 70 cm
Frequency Range:	430 – 440 MHz
Free Space Forward Gain:	13.7 dBi
Front to Back Ratio:	27 dB
Polarization:	Horizontal
Nominal Input Impedance:	50 Ohms
SWR Across Entire Band:	< 1.2
Maximum Power Input:	50 W
Matching Method:	Direct feed through RG316 teflon common mode choke (current balun)
Connector:	“N” (Common connector for both bands)
Mechanical Specifications 70 cm
Element Diameter:	4 mm Aluminum rod
Number of elements:	12
Longest element:	0.35 m
Element Mounting Position:	Below the Boom

All 2 meter / 70 cm antennas: 2m/70cm antennas