136-174 MHz Dipole antennas D1 VHF, D2 VHF, D4 VHF, D8 VHF : Radial :

Electrical specifications

Model	D1 VHF	D2 VHF	D4 VHF	D8 VHF
Operating frequency band, MHz	136-174
VSWR, not more than	1.5
Gain OMNI, dBi	2.15	5.15	8.15	11.15
OFFSET, dBi	5.15	8.15	11.15	14.15
Sector in vertical plane , -3dB	70°	37°	18°	9°
Impedance, Ohm	50
Max. power input, W	400	400	400	400 (800 optional)

Mechanical specifications

Model	D1 VHF	D2 VHF	D4 VHF	D8 VHF
Weight, kg	2.3	5.2	10.4	21.5
Height/Length, M	0.85	2.1	5	9.5
Construction material	Aluminium alloy
Mast diametr, mm	38-65
Rated wind velocity, m/s	45
Wind loading area, m²	0.07	0.14	0.29	0.6
Load of side wind 45 m/s, H	80	165	335	675
Rated wind velocity with 0.5" icing, m/s	28
Temperature range, °C	from -50 to +50
Connector	N-female

Antenna D1 VHF represents folded Pistolcors dipole. Its main advantages are wide band and relatively low susceptibility to technical born interference. Collapsible construction allows easy antenna mounting and dismounting, and welded dipole eliminates intermodulation. Emitting unit directional pattern can be slightly corrected by changing distance from it to mast. Antenna has reliable polymeric coating, which protects from hostile environment and icing. All-metal construction provides reliable lightning protection.

VSWR diagram, D1 VHF	VSWR diagram, D2 VHF
VSWR diagram, D4 VHF	VSWR diagram, D8 VHF

136-174 MHz Dipole antennas D1 VHF, D2 VHF, D4 VHF, D8 VHF

Electrical specifications

Mechanical specifications

VSWR diagram, D1 VHF

VSWR diagram, D2 VHF

VSWR diagram, D4 VHF

VSWR diagram, D8 VHF

D1 VHF in H-plane, OMNI (1/2 λ)

D1 VHF in H-plane, OFFSET (1/4 λ)

D1 VHF in H-plane, OFFSET (1/8 λ)