Frequency Range: 450 MHz – 5000 MHz

The 3126 Precision Sleeve Dipole antennas are truly omni-directional antennas, having an electric dipole pattern approaching that of a half-wave resonant dipole with typical gains between 1.5 and 2.0 dB. The sleeve dipole design allows the antenna to be end-fed to avoid cable and feedpoint interactions that interfere with the performance of the antenna. Integral quarter wave chokes and/or ferrite loading (depending on frequency range) also help to reduce cable interaction.

All Model 3126 sleeve dipoles are designed with a VSWR less than 1.2:1 in at least a +/- 10 MHz band around the labelled centre frequency. Gain values and +/- 0.1 dB symmetry certification are provided for a 200 MHz – 300 MHz band (depending on model) centred about the labelled frequency. This dipole has a typical VSWR <3:1 across this entire band, and may be used for precision range calibrations across the entire band provided appropriate padding (~ 10 dB) is used to minimize possible standing wave effects on cables.