The difference between the standard version and the advanced version: - Standard version - The extension rod is made of stainless steel, and the rod antenna does not have a frequency scale. - Advanced version - The extension rod is made of all aluminum, anodized in Chinese red, and the rod antenna has a frequency scale. Features: - 7-54MHz standard GP antenna - Adjustable length of its telescopic antenna meets your various needs - Portable design and small volume make it convenient to store in your backpack and easy to carry - The HAMGEEK antenna enables easy erection outdoors. It takes less than 5 minutes for one person to erect the antenna Parameters of HAMGEEK Antenna: - Frequency: 7-54MHz - Power: 200W SSB CW FM - Standing wave ratio of each section: less than 1.5 - Polarization method: vertical polarization - Total storage length: 53cm/20.9" - Net weight: 1.3Kg/2.9Lb Package Included: A. 5.6M/18.4FT Telescopic Antenna x 1 B. Load Coil x 1 C. Extension Pole x 1 D. GP Antenna Socket x 1 E. Ground Pin x 1 F. Counterpoise Stabilizer x 2 G. Counterpoise FFC Cable x 4 H. Counterpoise Terminal x 4