High Gain Omni Antennas for LTE, GSM, and Multi-Carrier Systems

 The 427x and 428x colinear antennas target sites where pattern stability, low PIM, and high PIP tolerance are mandatory. Both families use a centre-fed dipole array with a controlled feed network. This keeps the radiation pattern consistent across the operating band and prevents distortion when electrical tilt is applied.

Engineers working with high-density carriers, trunked systems, or high-power LTE sites will see the benefit immediately: predictable performance under load.

PIM and PIP Performance

Low PIM (–153 dBc)

  • Reduces intermodulation products at the antenna level.

  • Protects adjacent channels.

  • Improves uplink SNR in multi-site networks.

  • Supports dense sectorization without unwanted mixing.

High PIP (25 kW)

  • Handles power peaks from high PAPR waveforms.

  • Reduces risk of arcing in the feed system.

  • Maintains stable RF characteristics during instantaneous load spikes.

  • Extends service life in multi-carrier deployments.

These values make the antennas suitable for modern digital waveforms used in LTE and public safety networks.

427x Series (870–960 MHz)

Antenna for upper-UHF LTE/GSM systems requiring high gain and mechanical durability.

Electrical

  • Gain: 11.5 dBd (13.7 dBi)

  • Beamwidth: 4° ±1° (E-plane)

  • VSWR: <1.5:1

  • Omni deviation: <±1 dB

  • Max input power: 600 W

  • PIP: 25 kW

  • Impedance: 50 Ω

  • PIM: –153 dBc

  • Vertical polarization

Mechanical

  • Length: 4570 mm

  • Weight: 27.2 kg

  • Wind load: 870 N at 160 km/h

  • Survival wind speed: 240 km/h

  • IP56 rating

  • LM25 aluminium base, 128 mm GRP radome, brass elements

  • DC grounded structure

  • Optional lightning finial (200 kA rating)

Tilt options: 0°–5° in 7/16 DIN(f) or 4.3/10 DIN(f).

 

Click here for datasheet: 427x.11-915-Tx

428x Series (740–870 MHz) 

Designed for lower-UHF LTE/GSM with engineered null-fill for improved near-field coverage.

Electrical

  • Gain: 11 dBd (13.2 dBi)

  • Beamwidth: 3° ±1° (E-plane)

  • Lower sidelobe control: 25% null fill

  • VSWR: <1.5:1

  • Omni deviation: <±1 dB

  • Max input power: 600 W

  • PIP: 25 kW

  • PIM: –153 dBc

  • Impedance: 50 Ω

  • Vertical polarization

Mechanical

  • Length: 5244 mm

  • Weight: 32 kg

  • Wind load: 946 N at 160 km/h

  • Survival wind speed: 240 km/h

  • IP56 rating

  • LM25 aluminium base, GRP shroud, brass radiators

  • DC grounded

Tilt options: 0°–5° in 7/16 DIN(f) or 4.3/10 DIN(f).

Click here for datasheet: 428x.11-780-Tx

 

Notes

  • Centre-fed architecture improves pattern symmetry across the full band.

  • Wide-band feed design allows stable tilt adjustment without E-plane distortion.

  • Low PIM supports multi-operator or multi-carrier shared infrastructure.

  • High PIP aligns with modern OFDM-based systems where peak-to-average ratios continue to rise.

  • IP56 and 240 km/h ratings make both families suitable for exposed tower sites.

  • Mechanical interfaces (190.5 mm PCD flanged base) simplify integration with standard mounting hardware.

 

Published by Kalman Kozomos
18th December 2025