soundcard spektrum analy

SWR analysis of a G5RV antenna - Plotting SWR of a G5RV Antenna with a RigExpert analyzers

A PC as VLF receiver - Using a PC with soundcard as a VLF receiver, how to use your PC as a receiver for narrow-band signals in the VLF radio spectrum by DL4YHF

Using VNA to adjust Linear amplifiers  ^updated - Linear amplifiers cold adjustments with network analyser (VNA)

Sound Card Interface with Tone Keyer - An improved version of the audio interface commonly used to connect a computer soundcard to a transceiver\'s receive and transmit audio circuits

ZL2PD HF RF Signal Generator - This circuit came out of some work done for two antenna analysers

IW3HEV embedded antenna analyser - An interesting project of the popular IW3HEV antenna analyzer in and embedded solution by PA3CKR.

Digital HF Antenna Analyser Project - This antenna analyzer measures complex impedance over the 1.6 - 33 MHz HF spectrum by ZL2PD

Analog HF Antenna Analyser - A simple antenna analyser for the HF spectrum with a built-in signal generator with 3-digit LED frequency display.