FABRICATION ANTENNES - Service Manuals
3 manuals available for download
FABRICATION ANTENNES is a specialized technical resource for Radio & Communications professionals and enthusiasts. Our documentation library covers practical antenna design and analysis, from cost-effective solutions for satellite communication to optimized wire antenna configurations. Access detailed guides on antenna fabrication, performance analysis, and economical multi-band implementations.
Cheap Antennas for AMSAT LEO Satellites
Construction guide for dual-band 145/435 MHz antennas designed for Low Earth Orbit satellite communications. Covers detailed dimensions for 2 to 4 element 145 MHz Yagi antennas and 3 to 8 element 435 MHz versions, with complete J-driven element design specifications. Includes band splitter circuit construction using high-pass and low-pass filters with pencil-wound coils, element mounting techniques, and tuning procedures. Features performance comparison with commercial Arrow antenna systems. Essential reference for radio amateurs building cost-effective satellite receiving setups.
The Multi-Dipole: An Economical Multi-Band Wire Antenna
Technical guide on designing and building multi-dipole wire antennas for amateur radio operation. Explains half-wave dipole formula fundamentals, impedance matching principles, and SWR optimization for efficient radiation patterns. Covers practical wire selection criteria, stealth antenna configurations, flat-feed cable setups, and bandwidth trade-offs on the lower frequency bands (80m and 160m). Details construction techniques for both horizontal and vertical dipole installations. Includes comprehensive frequency tables with calculated dipole lengths spanning 160m through 10m amateur bands, plus circuit diagrams illustrating feed-point connections and tuning arrangements.
W3HH / T2FD Antenna Analysis and Optimization
Technical analysis of the W3HH folded dipole antenna, also designated T2FD, covering impedance measurement, radiation pattern characteristics, and current distribution modeling across the HF band using NEC-2 simulation. This engineering document examines both horizontal and oblique mounting configurations, providing detailed transformer design methodology and impedance matching circuit optimization. Includes load resistance tuning analysis to achieve broadband performance across multiple frequencies.