Build a high gain bi-square antenna for higher HF bands. Get 4dB gain over dipole on 10 meters with detailed calculations, matching solutions, operation tips
Tag: DIY VHF antenna
A collection of do-it-yourself antenna projects for the VHF bands , including J-poles, loops, dipoles, collinears, and dual-band designs. These guides provide dimensions, materials, and construction steps for building efficient amateur-radio antennas at low cost.
Twin-Lead J-Pole Antenna for VHF and UHF Amateur Radio
Build a simple twin-lead J-pole antenna for VHF/UHF using 300-ohm ribbon cable. This end-fed half-wave vertical with quarter-wave matching stub delivers omnidirectional coverage, low noise, and reliable FM/repeater performance without ground radials
5/4 Wave VHF Antenna for 145 MHz Using 450-Ohm Ladder Line
Build a 5/4-wave VHF antenna for 145 MHz using 450 Ω ladder line and a choke feed. Shows how to mount, feed, and match this high-gain vertical for FM, repeater, and simplex operations on the 2 m band
Dual-Band RW4HFN Antenna for 145/430 MHz bands
Compact dual-band RW4HFN antenna covering 145 MHz (2 m) and 430 MHz (70 cm) with a center-fed element and integrated matching section. Single-feed 50 Ω coax design provides versatile VHF/UHF operation for base, portable, and repeater use.
ZED Dipole Antenna – A Simple and Smart Design for VHF/UHF
Build the ZED dipole antenna for 2 m and 70 cm bands — a compact bent-element half-wave dipole with near-50 Ω feed, broadband VHF/UHF coverage, and simple DIY construction
Building a Quarter-Wavelength Coaxial Collinear Antenna for 2 Meters
Quarter-wave COCO antenna design for 2 m band: stacked λ/4 coax elements with phase-reversing joins for compact high-gain VHF performance and easy DIY construction
145 MHZ Delta Loop VHF Antenna
Build your own Delta Loop VHF antenna for 145 MHz with our clear diagram, dimensions, instructions, explains construction, feed point, and tuning tips.