HIGH GAIN HIGH POWER VHF ANTENNA
MODEL 1 :- WML - VHF ANTENNA 2.5KW, 8 DB GAIN
MODEL 2 :- WML - VHF ANTENNA 5KW, 8 DB GAIN
MODEL 3 :- WML - VHF ANTENNA 10KW, 8 DB GAIN

 

Specification Subject to Change without any Notice

 

DD has started many high power transmitters in big cities throughout India especially in metropolitan cities to cover more aria.

To meet this requirement the antenna with high power handling capacity & better gain is most effective solution.

WML therefore is planning to introduce the following models in VHF band.
MODEL 1: - WML - VHF ANTENNA 2.5KW, 8 dB GAIN.
MODEL 2: - WML - VHF ANTENNA 5KW, 8 dB GAIN.
MODEL 3: - WML - VHF ANTENNA 10KW, 8 dB GAIN.

FEATURES :

· 8dB RF power Gain.
· Rigid construction for long lasting performance.
· Easy Installation and Commissioning.
· Easy Replacement in place of existing Low Gain VHF Antenna on the same structure.
· Better VSWR.
· Horizontal polarization.
· DC grounded for maximum lightning protection.
· Improved wind Load withstanding capabilities.
· Design for high corrosion resistance and long life.
· Omni directional coverage.
· No need for reflective screen.
· Wind survival speed for: -

(A) 2.5KW antenna 160 Km/h(200 Km/H optional)
(B) 5KW antenna 200 Km/h
(C) 10KW antenna 200 Km/h


 
TECHNICAL SPECIFICATIONS :

ELECTRICAL PARAMETERS :

01. Frequency of operation : Capable of operation on a specified TV channel in UHF Band-IV and Band- V
02. Power handling capacity : 10 KW (Sync-Peak)
03. Polarization : Horizontal
04. Horizontal Radiation Pattern : Omni Directional
05. Departure from circularity : Within ± 2.5 dB in the specified frequency channel
06. Antenna Gain w.r.t. half wave dipole : 14 dB
07. Beam tilt : Not exceeding 1º
08. V.S.W.R. : 1.15:1 Across the specified channel band
09. Input impedance : 50 Ohms.
10. Input connector : 1 5/8 " EIA flange


MECHANICAL PARAMETER :

01. Temperature : 0° C to 55° C
02. Humidity : 95% at 40° C
03. Maximum Wind speed : 160 Kmph
04. Mounting : Std. Mounting with the help of 02 Nos. I-sections, 08 Nos. 'U' clamps and SS fasteners. ( See fig. I )
05. Construction : The antenna is constructed from heavy gauge aluminium pipe with 08 slotted windows covered with a thin PTFE sheet. The antenna is protected from ingress of rainwater by placing neoprene rubber strips under the aluminium channel of corresponding length and using appropriate sealing compound.
06. Finish : Main antenna pipe is painted with polyurethane light gray/ white/ ivory colour.

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