GME AE4001 150mm Antenna Whip (2.1dbi Gain)

Compact 150mm UHF CB Antenna Whip 2.1 dBi, Stainless Steel, Ground Dependent. Whip Only.

Product Overview

The GME AE4001 is a compact 150mm stainless steel UHF CB (477 MHz) antenna whip with 2.1 dBi gain. The first UHF CB whip in GME's AE4xxx antenna range, the AE4001 suits installations where a low-profile, short-length UHF antenna is required. The polished stainless steel ferrule provides a clean, corrosion-resistant connection point.

This is a ground-dependent design, requiring a steel mounting surface to form the antenna ground plane. The AE4001 is a whip only an antenna base and coaxial cable are required separately.

Features & Benefits

• 150mm compact UHF CB whip — low-profile stainless steel whip suited to installations where antenna height must be minimised
• 2.1 dBi gain — baseline UHF CB gain; equivalent to a standard dipole reference antenna
• Stainless steel construction — corrosion-resistant and durable for long-term outdoor use
• Polished stainless steel ferrule — the connector/base fitting is polished stainless steel for appearance and corrosion resistance
• Ground-dependent design — requires a ferrous (steel) mounting surface to provide the antenna ground plane
• Whip only — antenna base and cable are purchased separately

Technical Specs

Compatible With / Goes Well With

• UHF CB antenna bases with the correct thread for this whip — confirm with GME
• GME UHF CB radios (477 MHz)
• Steel-bodied vehicles and vessels (ground plane required)

Weight

Not specified

Frequently Asked Questions

What does 2.1 dBi gain mean for a UHF CB antenna?

Antenna gain in dBi is measured against an isotropic (theoretical perfect omnidirectional) reference. 2.1 dBi is effectively equivalent to a half-wave dipole antenna — the baseline for UHF CB performance. It radiates relatively evenly in all horizontal directions. Higher gain antennas (such as 6.6 dBi or 9 dBi) concentrate radiation closer to the horizon for greater range in flat terrain, but 2.1 dBi provides a wider vertical radiation angle that may be more useful in hilly terrain or on vessels.

What is the ferrule and why is it important?

The ferrule is the metal fitting at the base of the whip that provides the mechanical and electrical connection between the whip and the antenna base. A polished stainless steel ferrule resists corrosion in marine and coastal environments and provides a secure, clean connection to the base thread.

What antenna base is compatible with the AE4001?

Thread type is not confirmed in the supplier data. GME's standard UHF CB antenna bases (such as the ABL001 at 5/16" TPI) may be compatible, but confirm the AE4001's thread specification with GME before purchasing a base. The AE4001 is part of GME's UHF CB antenna range which typically uses 5/16" TPI or similar standards.

How does this 150mm UHF CB whip compare to a longer UHF CB antenna?

At 150mm, the AE4001 is significantly shorter than most UHF CB antennas — a standard quarter-wave at 477 MHz is approximately 157mm, so 150mm is near-resonant but compact. Shorter antennas have lower physical profile and are less prone to damage in low-clearance environments, but may have a marginally different radiation pattern compared to optimised longer designs. Higher-gain longer whips (such as 6.6 dBi) would provide better range on flat terrain.

Is a base and cable included?

No — the AE4001 is a whip only. An antenna base, coaxial lead, and radio are all purchased separately.