Tree Mounted Quarter-Wave Vertical Antenna

Antenna DIY HF

Field-expedient quarter-wave vertical antenna suspended from a tree using only two sloping radials. Compact HF…

Software Defined Radio technology has revolutionized base station infrastructure, laboratory-grade receivers, and bench equipment for…

The Hotel Antenna is a clever space-saving vertical antenna design popular among VHF and UHF…

The double bazooka antenna, often described as a coaxial dipole, is a time-tested antenna design…

Antenna DIY VHF/UHF

If you're hunting for a high-performance antenna that doesn't look like a metallic porcupine, the…

Circuits DIY HF radio

Clean, punchy audio is critical for effective SSB communication, especially when operating QRP or low-power…

audio Circuits DIY HF Tools

Simple speech processor for homebrew and QRP SSB transceivers that boosts average talk power while…

Circuits DIY HF Tools

Simple microphone preamplifier with diode clipper to boost and limit SSB audio for amateur radio…

Antenna DIY VHF/UHF

DIY 300 Ω twin-lead J-pole antenna for the 2 m band offering efficient VHF performance,…

Antenna DIY VHF/UHF

Build a simple twin-lead J-pole antenna for VHF/UHF using 300-ohm ribbon cable. This end-fed half-wave…