XCircuit is a drawing program ideal for circuit diagrams, but also for other purposes. I compiled it to run on

# How to get a desired resistance using standard resistor values

This is easier than expected… (example) type “how can I get 2869 ohms using standard resistors” in Wolfram Alpha and

# Wire gauges

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

# 121.5MHz is not a good frequency…

Got some random crystal frequencies (since I don’t care about the exact frequency) for the VNA transverter. Google search reveals