FM Broadcast Folded Dipoles & Stacked Arrays

Models FMD, FMD3-SA & FMD6-SA

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Model FMD FMD3-SA FMD6-SA
Number of Dipoles 1 3 6
Frequency Range (MHz) 88-108
Bandwidth (MHz) at -20dB 10
Polarisation Vertical
Omnidirectional Gain (dBd) 0 3 6
Gain with Offset (dBd) 3 6 9
Half Power Beamwidth E Plane (Deg) N/A 27 13
Input Impedance (Ohms) 50
Return Loss (dB & VSWR) <-20dB 1.2:1
Maximum Power (W) input* 350 700 1400
Cable Type RG213
Connector Type N Plug
Dipole Length (m) 1.5
Boom Length (m) 1.5
Boom Diameter (mm) 48
Projected Area (m2) 0.145 0.29 0.58
Wind Loading at 150 km/h (N) 160 320 640
Weight (kg) 4.3 8.8 17.6

* The power rating is based on a cable type power divider (PD-2 or PD-4). A higher rating can be provided by using our tubular type power divider (PD-2FM or PD-4FM).Should the broadcast coverage area required be in a small sector, or if further gain is needed, then an alternative would be to use a yagi antenna.

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