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GKA24
UHF TV GRID KIT Antennas
GKA Series

RFS Parabolic GRID KITS are designed to be assembled into grid parabolic antennas of comparable performance to welded grid antennas.
Grid kit antennas have an important advantage - they can be packed in smaller component level packages, greatly reducing transportation costs, handling and storage problems. Assembly can be carried out with a few basic tools and is easily achieved at remote sites.
Kits contain universal mounting clamps including the panning clamp, but tower mounting tubes are not included. The mounting method allows either horizontal or vertical polarization.

FEATURES / BENEFITS

  • Extremely rugged mechanical design to withstand high windspeeds (up to 350km/h)
  • 100MHz bandwidth for multichannel applications
  • Horizontal or vertical polarization
  • Easy adjustment of azimuth and elevation
  • Broadband unpressurized feeds, with no trade off in gain slope characteristics
  • Corrosion resistant aluminium tube reflector, hot dip galvanized mounting, stainless steel hardware.


Technical features

Structure

Product LineAntenna TV
Product TypeBand IV/V (UHF) TV Grid Kit Antenna

Electrical Specifications

Frequency Range MHz526 - 820
PolarizationHorizontal
Vertical
Nominal Gain (Mid-band) dBdUpper limit 23.7
Mid band 21.7
Lower limit 19.7
Max. Bandwidth MHz100
Half Power Beamwidth Azimuth degrees12.5
Return Loss dB> 17.7
Power Rating kW0.1 (N-Type)
0.5 (7/8" EIA)
Input/Power Rating CommentNote 4
Min. Front to Back Ratio dB21
Side Lobe (max) dB15
Impedance (unbalanced) Ω50

Mechanical Specifications

Input ConnectorN socket (suffix "N")
7/8" EIA flange (suffix "E")
Dimensions (Height or Length) cm (in)240 (94) Diameter
Mounting (Standard) mm (in)Clamp size 76 - 115mm (3 - 6) OD tube. Note 5
Effective Area Front (full antenna) No Ice m² (ft²)2.1 (22.6)
Effective Area Front (full antenna) with 12.5mm(0.5") Radial Ice m² (ft²)2.1 (22.6)
Effective Area Side (full antenna) No Ice m² (ft²)1.1 (11.8)
Effective Area Side (full antenna) 12.5mm (0.5") Radial Ice m² (ft²)1.1 (11.8)
Wind Survival Rating km/h (mph)350 (217)
Wind Load @ 55 m/sec Front kN (lb)3.9 (875)
Wind Load @ 55 m/sec Side kN (lb)2 (450)
Wind Load CommentNote 2
Weight kg (lb)50 (110)

Packaging Information

Shipping Weight, Kg (lb)kg (lb)121 (267)
Shipping Volume m³ (ft³)0.85 (30)
Shipping Dimension - Length cm (in)269 (105.9)
Shipping Dimension - Width cm (in)69 (27.2)
Shipping Dimension - Height cm (in)46 (18.1)


GKA

External Document Links

Notes

Note 1 All grid kit antennas are packed in heavy wood cases.
Note 2 Wind loading calculated in accordance with AS1170:Part 2,""SAA Loading Code - Wind Forces"".
Note 3 Calculated in accordance with AS1664 and AS1250 (minimum safety factor of 1.5 on yield strength).
Note 4 Add suffix to model number ""N"" for N type, ""E"" for 7/8 EIA flange.
Note 5 Fine adjustment in azimuth and elevation on all models is ±5 degrees (min).
Note 6 Lightning protection by direct ground.