Strona wydrukowana z adresu: http://radmor.com.pl/Civil-products/Accessories/Antennas/Mobile/Mobile-Antenna-30828

Mobile Antenna 30828

Mobile antenna 30828

Mobile antenna 30828

The 30828 mobile rod antenna is designed to work with simplex vehicle radiotelephones operating in frequency band 31 ÷ 47 MHz. Antenna, due to the high mechanical strength, can be installed on any motor vehicle used in rough terrain (such forest, thickets).

Electrical specifications:

Typ (electrical length of antenna)

λ/2

Versions of the antenna as function of operating frequency

Version

Operating band [MHz]

1,4

0,1 MHz from band 31 ÷ 36

2,5

0,1 MHz from band 36 ÷ 41

3,6

0,1 MHz from band 41 ÷ 47

Nominal input impedance

50 Ω

SWR in operating bands

≤2

Polarization type

vertical

Max power

20 W

Type of antenna connector

Version

Connector

1,2,3

TNC-50

4,5,6

C-50

Mechanical specifications:

The max height of antenna over the vehicle's body:
ver. 1, 4
ver. 2, 5
ver. 3, 6

 

520 mm
465 mm
415 mm

Weight of antenna

0,4 kg

Environmental conditions:

Operating temperature

-40°C ÷ +55°C

Relative humidity

≤98% in temp. +40°C

Operating conditions:

Antenna needs to be mounted to the metal body of a vehicle or to the metal bracket which is galvanically connected to the bodywork, which is a “ground plane” for the antenna. The place of mounting of the antenna needs to be close to the center of the largest horizontal plane of vehicle’s metal bodywork or close to the center of the whole structure of a vehicle. This way of installation ensures correct antenna impedance and a horizontal radiation pattern closest to circular.

The hole in a vehicle’s bodywork of a diameter of Φ 16,2 mm is required for installation of the antenna. During the installation it is particularly important to ensure a galvanic contact between the antenna base (shield of a coaxial cable supplying an antenna ) and the bodywork of a vehicle.