2026

Using a RTL_SDR device I did a RF survey from 100Mhz to 1 Ghz and created heatmaps of the results. Here they are ,,,, Taken in Appleton Wisconsin

This log periodic antenna is in Cedar Rapids, IA and is on the location of where Arthur Collins started his radio business. It’s one of the original plants that built shortwave radios and is part of the ham radio club there. It is very large.