Antenna Noise Bridge Detector

Noise Bridge

Tune your antenna, then measure its radiation pattern with this pocket-sized instrument J, Frank Brumbaugh KB4ZGC Box 30 - c o Defend in i Salinas PR 00751 Using an antenna noise bridge is one of the best and simplest means of measuring antenna characteristics. It is invaluable for tuning an antenna, especially a beam, to resonance at a desired frequency. Normal ihe station receiver is used with the noise bridge as a detector to indicate die resonant frequency of the antenna, and the...

Simple Multiuse Amplified Speaker

Frank Brumbaugh KB4ZGC R (X Box 30 - c o Defendini Salinas PR 00751-0030 So you've built that nice kit transceiver, and you want to use it in your shack. You've got two problems right away First, it was probably designed to run off batteries, and second. it probabh doesn't have enough audio power to drive a speaker. Many kits are designed that way to save mone and to make them portable. The power supply and audio amplified circuits add weight raise costs and create current drain that makes...