F-3647 Wideband Dual Antenna

F-3647 Wideband Dual Antenna

Frequency Range: 138-174 (871F-70), 406-512 (771-70) MHz
Gain: 2.0-2.5dBd

The F-3647 is a wideband dual antenna with an 871F-70 on the base and a 771-70 on the top. The antenna offers for the 871F-70 & 771-70 a choice of radiation patterns that are determined by the dipole-to-mast spacing. The F-3647 has an internal cabling and is not field adjustable.

The 871F-70 & 771-70 antenna is offered in a ¼, 3/8, or ½ wave pattern spacing versions. The antenna can be black anodized. Heavy Duty version of the antenna is also available.

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Description

The F-3647 is a wideband dual antenna with an 871F-70 on the base and a 771-70 on the top. The antenna offers for the 871F-70 & 771-70 a choice of radiation patterns that are determined by the dipole-to-mast spacing. The F-3647 has an internal cabling and is not field adjustable.

The 871F-70 & 771-70 antenna is offered in a ¼, 3/8, or ½ wave pattern spacing versions. The antenna can be black anodized. Heavy Duty version of the antenna is also available.

Additional information

Frequency Range, MHz

138-174 (871F-70), 406-512 (771-70)

Nominal Gain, dBd

2.0-2.5

Bandwidth: 1.5:1 VSWR, MHz

36 (871F-70), 106 (771-70)

Number of Dipoles

1 (871F-70), 1 (771-70)

Polarization

Vertical

Pattern

Offset/Bidirectional

Power Rating, Watts

200 (871F-70), 150 (771-70)

Nominal Impedance, Ohms

50

Lightning Protection

DC Ground

Standard Termination

Type N Male, other connectors available upon request

Temperature range

-40 to +60 C˚

Length, in (mm)

126 (3200)

Width, in (mm)

41 (1041)

Weight, lbs (kg)

26 (12)

Rated Wind Velocity, No Ice, mph (km/h)

145 (233)

Rated Wind Velocity, 0.5” (13mm) ice, mph (km/h)

115 (185)

Lateral Thrust @ 100 mph, wind, lbs. (N)

85 (378)

Bending Moment @ top clamp: 100 mph, ft.*lb (N.M)

210 (285)

Projected Area, ft² (m²)

3.0 (0.28)

Mounting Information Mast O.D., in. (mm)

2.38 (60)