In addition to writing several articles for Circuit Cellar and having ideas published in EDN and Electronic Design, Aubrey wrote Excel by Example: A Microsoft Excel Cookbook for Electronics Engineers ...

Now I use a BUNGARD PCB milling machine with automatic tool change. This one is a cheap 3 axis cnc machine that can work up to 1200 mm/min with 0.01 mm precision.

RF filters are really just a handful of strategically placed inductors and capacitors. Yes, you can make a 1 GHz filter out of through-hole components, but the leads on the parts turn into inductor… ...