300-350 MHz Dipole antennas DS2 ALT, DS4 ALT, DS8 ALT : Radial :

Electrical specifications

Model	DS2 ALT	DS4 ALT	DS8 ALT
Operating frequency band, MHz	300-350
VSWR, not more than	1.5
Gain OFFSET, dBi	3.15	6.15	9.15
Sector in vertical plane , -3dB	86°	43°	18°
Impedance, Ohm	50
Max. power input, W	400

Mechanical specifications

Model	DS2 ALT	DS4 ALT	DS8 ALT
Weight, kg	1.4	3.2	6.72
Height/Length, M	0.4	1	2.2
Construction material	Aluminium alloy
Mast diametr, mm	35-45
Rated wind velocity, m/s	45
Wind loading area, m²	0.02	0.04	0.08
Load of side wind 45 m/s, H	23	47	95
Rated wind velocity with 0.5" icing, m/s	28
Temperature range, °C	from -50 to +50
Connector	N-female

Dipole antenna DS2 ALT was designed specifically to operate through duplex filter on one feeder in receiving (300-310 MHz) and one in transmitting (336-346 MHz) frequency section, preserving circular pattern.
DS4 ALT and DS8 ALT antennas represent array antenna with increased gain, built using two or four DS2 ALT dipole pairs combined by adders. Such combination of several antennas DS2 ALT on one mast raises gain factor on receiving and transmitting section simultaneously. These antennas are essential for multichannel trunking systems, when TX-TX decoupling is need at the expense of vertical diversion.

DS2 ALT E-plane pattern	DS4 ALT E-plane pattern
DS8 ALT E-plane pattern	DS2 ALT H-plane pattern
VSWR diagram, DS2 ALT	VSWR diagram, DS4 ALT

300-350 MHz Dipole antennas DS2 ALT, DS4 ALT, DS8 ALT

Electrical specifications

Mechanical specifications

DS2 ALT E-plane pattern

DS4 ALT E-plane pattern

DS8 ALT E-plane pattern

DS2 ALT H-plane pattern

VSWR diagram, DS2 ALT

VSWR diagram, DS4 ALT

VSWR diagram, DS8 ALT