This blog will have posts for the various articles, projects and so on published on osengr.org. Readers may post feedback on those items by leaving a comment on the relevant item.

Loop Antenna Design

Coming soon…a long article about design of electrically small loop antennas for LF and MW frequency bands, with emphasis on the AM broadcast band. It will also contain the first known theoretical analysis of the trendy Ferrite-Sleeve-Loop (or FSL) antenna.

Wireless Weather Sensor Protocols

This article on osengr.org contains detailed information on the RF and data protocols used by several brands of wireless weather sensors, all operating on a frequency of 433.92MHz. Find something wrong, or have info on a new sensor? Comment on this post and we’ll try to do something about it.

Digital Generation of Chirps

The article describes a very convenient method for generating a multi-tone test signal which has a crest factor of unity and won’t stress the signal generation hardware.

Transmission Lines w/Square Conductors

This article analyzes the characteristic impedance of parallel wire transmission lines made with square conductors. These are usually built with round conductors, and we wondered what happens when they are square instead.