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NGS08-C260
Broadband Slot Antennas for NextGen-TV Networks, Cardioid C260 Azimuth Pattern, Low Wind-load, Elliptically Polarized, High & Low Power versions

PRODUCT DESCRIPTION

The NG series antennas are ideal for multi-channel Next Generation TV networks. These antennas are typically deployed at SFN sites that surround the main transmission site in a NextGen-TV single frequency network (SFN). The high-power rating and broadband performance allow multiple channels to be transmitted from an SFN site, thus reducing capital costs and providing consistent coverage across channels. Elliptical polarization is available for improved transmission to portable and indoor devices. The NG family of antennas provide both top mounted and side mounted solutions in a low wind load format.


A wide range of radiation patterns are available. The RFS Antenna Selection Tool contains pattern data for all NGS antenna models and works alongside modern SFN planning tools to help you choose the right NextGen antenna for each SFN site. To download, click Here

FEATURES / BENEFITS

  • Broadband performance for multi-channel SFN networks allows SFN infrastructure sharing and reduces overall CAPEX.
  • Low wind-load reduces tower loads thus simplifying SFN site acquisition.
  • Large range of azimuth radiation patterns – simplifies the SFN planning process to provide optimum network coverage.
  • Broadband elliptical polarization performance – improves signal penetration and network performance.
  • Radiation patterns with reduced back-radiation are available for SFN sites requiring interference mitigation.
  • Supplied with brackets for side mounting to a wide range of tower leg sizes

TECHNICAL FEATURES

Details 

Product Type   NextGen-TV Broadcast Antenna

Electrical Specifications 

Antenna Type   Broadband Slot Antenna
Operating Frequency Range MHz 470-608
Polarization   Elliptical
Azimuth Radiation Pattern   Cardioid C260
VSWR   <1.15:1 (1.1 on channel)
Impedance Ohms  50 (for 1-5/8" to 6-1/8" Inputs)
 75 (for 7-3/16" Input)

Mechanical Specifications 

Radome Diameter mm (in) 381 (15)
Pressurization Operational kPa (psi) 10 to 25 (1.4-3.6)
Pressurization Test kPa (psi) 100 (15)

Material

Material - Radome   UV Resistant Fibre Glass
Material - Insulators   Virgin PTFE
Material - Support Pole / Mounting   Hot Dipped Galvanized Steel
Material - Feedline & Radiators   Copper
Material - Reflecting System   Aluminum
Color   White, others on request

Model Number Specifications 

Antenna Model   NGS04-C260 NGS08-C260 NGS12-C260 NGS16-C260 NGS20-C260 NGS24-C260
Number of Bays   4 8 12 16 20 24
Elevation Gain at 539 MHz Numerical 4.9 8.4 12.1 16.0 20.1 24.0
Azimuth Pattern Directivity Numerical 2.6
Peak Gain at 539 MHz Numerical 12.8 21.7 31.5 41.5 52.2 62.4
Peak Gain at 539 MHz dBd 11.1 13.4 15.0 16.2 17.2 17.9
Standard Beam-Tilt [note 1] 1.5 1.0 1.0 0.75 0.75 0.75
Power Rating: High Power Model kW 15 34 50 60 70 80
Connector: High Power Model   3-1/8" EIA 4-1/16" 6-1/8" EIA 6-1/8" EIA 6-1/8" EIA 7-3/16"
Power Rating: Low power Model kW 5 10 15 20 25 30
Connector: Low Power Model   1-5/8" EIA 3-1/8" EIA 3-1/8" EIA 3-1/8" EIA 4-1/16"  4-1/16" 
Mounting Type   Top or Side Top or Side Top or Side Side Side Side
Height m (ft) [note2] 2.29 (7.5) 4.30 (14.1) 6.49 (21.3) 8.69 (28.5) 10.91 (35.8) 13.11 (43.0)
Weight kg (lb) [note2] 114 (251) 238 (525) 445 (981) 621 (1370) 804 (1773) 1050 (2315)
Effective Area Front (No Ice)

m2 (ft2)
[note 2,3,4]

0.50 (5.3) 1.00 (10.8) 1.51 (16.2) 2.01 (21.7) 2.52 (27.1) 3.02 (32.5)

External Document Links

Antenna Selection Tool: Download

Notes

Note 1: Other Beam-tilts available on request

Note 2: Data shown is for side mounted antennas 

Note 3: Design Parameters in accordance with TIA-222-G are:

  • 160 kmh (100 mph) Basic Wind Speed with no ice
  • Structure Class II
  • Topographic category 1, Exposure category C
  • Interface steelwork to tower not included in calculations.

Note 4: Moment of arm from mounting pole to centre of antenna = 0.65m (2.1ft).