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This homebrewed antenna tuning unit also incorporates a 50-ohm QRP dummy load, power meter (1 or 10 Watts full scale), and SWR meter

The "EZ-Tuner" is a homebrew automatic legal-limit antenna tuner that covers all amateur HF bands from 160-10 meters. Using a T-network design and controlled by a BASIC Stamp BS2sx microcontroller, the EZ-Tuner will match at least a 16:1 VSWR for either unbalanced or balanced transmission lines.

Homebrewed SWR meters projects by G3TXQ

Whether we are tuning up homebrew equipment, checking antenna VSWR, adjusting a linear amplifier, or just monitoring output power during a contest, almost all aspects of ham operation can use a power meter. Paul Wade W1GHZ

The circuit is based on two AD8307 log amplifiers, which are connected to the forward and reflected ports on a directional coupler

Two separate meters with SWR and Power Meter combined functiosn split a homebrew project by W2EB

A fand dipole antenna home made for the 7,14,50 MHz. This article descbribes how to homebrew the antenna, hot to setup and some SWR measurements.

This project describes a DIY all band HF SDR transceiver. Built around a Softrock 6.3 kit, it boasts a 20W homebrew amplifier and ATmega168 microcontroller for USB control. An LCD displays frequency, power, and SWR. Automatic LPF selection and SWR protection enhance functionality. Compatible with Rocky and PowerSDR software, this project provides a cost-effective and powerful HF SDR transceiver for hobbyists.

Homebrew Antennas, Transmitters, Receivers, Converters, Keyers and SWR/RF Current Indicators with photographs an excellent blog with many projects by VU2NAN

This describes a homebrew End-Fed Half-Wave (EFHW) antenna for low power SOTA, Parks and Field Day events. Made with readily available materials, it offers a resonant antenna in 40/20/15/10m bands without requiring an antenna tuner. The 19.8m long radiator wire in an inverted V configuration achieves VSWR below 1.5:1 for voice. CW users might need to adjust the length. Details include materials list, fabrication of the end insulator, and the 49:1 impedance transformer construction with a circuit diagram.