GP 450

¼ λ Ground-Plane Antenna for the 450 MHz Band

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GP 450

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GP 450
Electrical
Model GP 450/…
Frequency l : 380 – 430 MHz
h : 420 – 470 MHz
Antenna Type Ground-plane
Max. Input Power 1000 W
3 dB Beamwidth, H-Plane Omnidirectional
Polarisation Vertical
Pattern Type Omnidirectional
Impedance 50 Ω
Gain 0 dBd (2.2 dBi)
Bandwidth 40 MHz @ VSWR 2.0
Environmental
Operating temperature range -30 °C to +70 °C
Mechanical
Wind Area 0.0128 sq. m / 0.14 sq. ft
Connection(s) UHF(f) (fitting PL 259)
Materials Chromed brass. Weather- and shockproof plastics
Colour Metallic Silver
Historic Brand Amphenol Procom
Height Approx. 340 mm / 13.39 in.
Wind Load 16 N (160 km/h)
Weight Approx. 0.9 kg / 1.98 lb.
Element Diameter 8 mm / 0.31 in.
Mounting 38 mm dia. mast tube (42 mm dia. as option, see note)
  • GP 450/… is a ground-plane antenna of the triple-leg type.
  • The antenna is delivered in two models tunable over the ranges 380…430 MHz (l) and 420…470 MHz (h), respectively, by adjusting the length of the radiator.
  • The cutting diagram on the diagrams tab indicates how long the radiator must be corresponding to a specific centre frequency. The radiator is measured from its free end (excl. top knob) to the bottom of the black insulator. Do not cut the radials – they should be left untouched.
  • GP 450/… comprises a GP-head, one radiator and threeradials – all made of chromed brass.
  • GP 450/… is made of first-class materials and will endure “wear and tear” for years – no maintenance required.
  • LW-SS-1″ mounting bracket and GP Adapor is available as accessories.

CUTTING DIAGRAM

Model Product No. Frequency Add To Quote

GP 450/l

 100000128 Tunable within 380 – 430 MHz

GP 450/h

 100000129 Tunable within 420 – 470 MHz

GP 450/l-42 mm

 100000130 Same as above

GP 450/h-42 mm

 100000133 Same as above

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