HIGH GAIN LOW POWER VHF TV TRANSMITTING ANTENNA MODEL : WML

HIGH GAIN LOW POWER
VHF TV TRANSMITTING ANTENNA
MODEL : WML - VHF ANT. 100W

Specification Subject to Change without any Notice

WML is continuously striving to provide full satisfaction to customer through reliable & quality products in the area of TV Broadcasting. We are already supplying to Doordarshan energy efficient 2 X 50W UHF TV Transmitter with Class AB MOSFET version technology and VHF and UHF TV transmitting antennae. These products are based on latest trend of technology and consume low power.

Now WML is ready to introduce a High Gain Low Power VHF TV Transmitting antennae we understand that large number of LPT/VLPT stations are equip with local antennae having 5dB gain. Now we are proposing with our new antenna having 8dB gain. The increase of 3dB Power Gain will enhance TV coverage of existing network. It can be mount using existing antenna mast.

FEATURES :

· 8dB RF power Gain.

· Low Weight Rigid Construction.

· Easy Installation and Commissioning.

· Easy Replacement in place of existing Low Gain VHF Antenna on the same structure.

· Thanks to mechanical Design for easy transportation in Hilly area.

· Better VSWR.

· Wilkinson Divider for better Power distribution.

· Same wind Load withstanding capabilities of existing antenna.

· Design for high corrosion resistance and longer life.

· Omni directional coverage.

· No need for reflective screen.

TECHNICAL DESCRIPTION :

It is a quadrant antenna ideal for low power single channel Band III TV application. The coverage is basically Omni directional. There are 8 bays. Each bay is comprising of two radiating elements giving approximately 1.5 dB gain. Each dipole is mounted in V configuration. The dipoles are fabricated from the aluminum of 1" wide & 5mm thickness.

An " N " Female type connector is put at the bottom of the Aluminum Box. A 4 way zero degree Wilkinson RF divider with aluminum heat spreader is enclosed in the Box. RF power-handling capacity of the said divider is extended up to the 1KW by changing the l/4 Transmission line. Four out put of the dividers are terminated through the 4 bay dipole pairs with suitable phase matching for maximum RF power transfer.

The total length of the antenna is 7 meter. It is divided into two parts. The upper part is having 2 bays four pairs of dipoles mounted on AL pipe. While lower part of the antenna consists of 2 bays four pairs of dipoles and divider Box with input connectors.

The antenna is designed for easy transportation in hilly area. The length of the antenna is divided in to two parts. Please refer figure No.1 for details.

While installation of the antenna at site, assemble the upper and lower part of the antenna and erect the antenna on the existing mast/tower. The assembly procedure is simple and can be executed by experienced DD staff.

The antenna is manufactured to provide long-term reliability and high performance. It is factory tuned for specific channel & assembled for easy installation at site.

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