P.S. Also linked is GM3SEK's Pi and Pi-L Network Calculator in an Excel spreadsheet format. The list's old timers have seen it referenced many times. I've linked it to my Google Drive for newcomers with an interest. https://drive.google.com/drive/folders/1djBIuo63RJXpAqGIQJLqd7gfC-BS2QuW?usp =sharing Paul, W9AC