The AE4700 series is an adaptable antenna system with the coaxial termination embedded within the spring assembly with an easy screw down fit of the whip. This allows for interchangeability of whips depending on the operating conditions and application, shorter lengths and lower gain for hilly terrain and longer lengths with higher gain for travelling on open roads with flat terrain. These antennas are a popular choice for 4WD caravans and heavy vehicles. Is the GME AE4701B Antenna Right for me? Alongside considerations of Installation requirements, you need to consider the Gain Rating of your Antenna and how it will impact your use. The GME AE4701B Antenna is a unity gain (2.1dBi) that outputs a signal at the same level at which it is input. The broad distribution pattern of unity gain antennas is less likely to be obstructed by buildings, bushland and hilly terrain. Therefore, a unity gain antenna is the best choice for a rugged and mountainous country. GME - The Company GME was established over 50 years ago with the intention of designing and manufacturing world-class radio and communication equipment within Australia. GME products fall under the umbrella of Standard Communications Pty. Ltd. and proudly remain a privately owned Australian company. Their radio products are of the most reliable quality and have been depended upon by the Australian rural community and State Emergency Services. Browse all UHF antennas.