Dual Band – Dual Dipole Antenna for 21 MHz and 28/29Mhz Frequency

Abstract

The focus of the design and construction is the dual band antenna that can cover both 15-meters and 10-meters bands. The design also considers the major purpose of the antenna for DXing and Dxpediton. The requirements for the antenna are; portability, easy to handle and to assemble, higher dB Gain, dual-bander design that can cover 15-meters and 10-meters band and can be attached to a rotator for signal directivity. The design and construction is based on all available low cost materials. This design can perform in the desired frequency with optimum performance. The testing will be through electronic devices such as Standing Wave Ratio Meter and Radio Frequency Analyzer and instrumentation. The construction also uses value engineering and cost effective. The antenna works to the desired two frequencies, the 21 MHz and 28/29 MHz. It can be operated for both field station and fixed station. The portability of this design can be easily deployed on an emergency situation especially during disaster where the normal transmission of communications fails. It can handle a loading of 1000watts of power. It is highly recommended that radio amateur enthusiast developed or build similar low cost antenna for DXing and Contest.