THIS IS: The model TW1 Telescopic Whip by Super Antenna. It is for all Super Antenna MP1 portable HF antenna systems. Made by Super Antenna, designed as part of the /backpack /base /travel /mobile /portable antenna system for Ham Radio. It is for transmitting, receiving, and scanning on HF VHF and UHF radio frequencies. SPECIFICATIONS: BANDS: All HF-VHF-UHF ham bands when used with the Super Antenna MP1 antenna system. SELF RESONANT FREQUENCY RANGE: Using the TW1 Telescopic Whip by itself, it covers 60 MHz to 440 MHz continuous by manually adjusting the length. Also covers CAP, MARS, MURS, Marine, FRS, GMRS, scanner, police, law enforcement, air, weather, fire, federal, state, local, FM broadcast, aeronautical, and all scanner bands. GAIN: +1.2dB over isotropic. COMPATIBILITY: Fully compatible with all Super Antenna MP1 Antennas and Equipment, and similar portable vertical and dipole antennas. FITTINGS: Brass 3/8"-24 male standard fitting at bottom of whip. Attaches by screwing the fitting onto the top of a Super Antenna mount or coil (mounts or coils not included, sold separately). Deploys in one minute by one person with no tools needed. Compatible with most other portable vertical antennas and ground planes which have a 3/8"-24 female fitting. SIZE: Retracts to a minimum length of 6.5 inches (16.5cm) for portability. Extends out to 44" inch (110cm) at full length. MATERIALS: Brass with metallic finish. WEIGHT: 2.5 ounces (71grams). POWER RATING: 500W SSB, 300W CW/DATA. COLOR: Metallic silver.