The parts list here is the digikey parts list . It contains everything needed, except: 1. Transformers – these were…

High sensitivity (36dB gain), tested for low harmonic distortion and flat frequency response (1dB down at 40Hz, flat past 30kHz)….

PTFE has a more constant (!) dielectric constant over a reasonable frequency range (not that the 4 ohms delta of…

Since the steps were too much, this excel file was created. In the spreadsheet, the green values can be entered,…

For constructing transmission lines, coax is useful because it is available in 50 and 75 ohms. For transmission line transformers,…

Wire gauge Excel spreadsheet with AWG and SWG (in inches and mm). American Wire Gauge                Standard Wire…

There are some Autocad DXF <-> Eagle converters available but they seem to be demo versions, and I didn’t get…

 (with a spinning wheel cutting tool, I forget what it is called).

This allows 48v equipment to be powered from a 12v battery… ideal for power-over-ethernet devices which need 48v. A commercial…

This board is a generic audio controller with decent sound. It was designed for an ipod but can be used…