Super Antenna MR4020 SuperWire Radial Set for HF Vertical Antennas 40m 30m 20m bands ham radio MP1 ground plane NOTE: PLEASE BUY NEW VERSION MODEL MR4010 INSTEAD. This is the model MR4020 SuperWire Radial Set 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 and receiving on HF radio frequencies. SPECIFICATIONS: BANDS: Pre-tuned to 40 meters (7MHz), 30 meters (10MHz), and 20 meters (14MHz) ham bands. FREQUENCY RANGE: Covers 6.9 MHz to 16.5 MHz. Also covers CAP, MARS, Marine, shortwave, and HF bands (when used with MP1 antenna system or similar vertical antennas). GAIN: +4.5dB over a typical ground rod. COMPATIBILITY: Fully compatible with all Super Antenna MP1 Antennas and Equipment. Attaches by included push-on connector to Super Antenna mounts (mount not included, sold separately). Deploys in one minute by one person with no tools needed. Compatible with most other vertical antennas and ground planes. Includes spare mating connector for use with other types of antennas. SIZE: Packs down to a 9"x4" (23x10cm) compact roll for portability. Extends and fans out to 3 full size quarter-wave wires. WIRE: Proprietary SuperWire 18AWG 41-Strand PTFE Stealth. LENGTH: Max wire length: 33 feet (10m). CONNECTOR: Standard push-on spade lug 1/4-inch (6mm) female and #8 Screw ring terminal with screw included. WEIGHT: 8 ounces (227grams). POWER RATING: 500W SSB, 300W CW/DATA. COLOR: Stealth Black.