S.M4-490-OM

4-stack dipole phased array, Omni, 465-525 MHz

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Data Sheet
CE Certification

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S.M4-490-OM
Electrical
Frequency 465 – 525 MHz
Max. Input Power 250 W
3 dB Beamwidth, H-Plane Omnidirectional
Polarisation Vertical
3 dB Beamwidth, E-Plane 21 °
Impedance 50 Ω
Gain 5.7 dBd (7.9 dBi)
VSWR < 1.5:1
Antistatic Protection All metal parts DC-grounded (Connector shows a DC-short)
Environmental
Ingress Protection IP68
Mechanical
Elements 12.7 dia. x 1.6 mm wall aluminium alloy grade 6063T6
Connection(s) N(f) on RG213/U cable
Boom Material 38.1 mm dia. x 3.2 mm wall aluminium alloy grade 6082T6
Fasteners Stainless steel grade A2-70
Length 2300 mm
Element Clamps Diecast Al / Zinc alloy
Historic Brand Skymasts
Wind Load 206 N (160km/h)
Weight 5 kg / 11.02 lb
Balun Encapsulant Polyurethane Resin U-600
  • The S.M4 is an array of phased centre fed folded dipoles mounted on an aluminium mast for PMR / Trunked radio applications.
  • Each folded dipole balun assembly and associated harness junction is completely encapsulated in poyurethane resin, totally preventing moisture ingress.
  • Former Skymasts brand product.

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4-stack dipole phased array, Omni, 465-525 MHz S.M4-490-OM

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