math’s notes

ecently, I uncovered an old shortwave receiver I had loaned to my granddaughter many years ago when she exhibited an interest in amateur radio (which unfortunately she did not pursue). This was an old Hallicrafters S-38 that was one of my very first shortwave receivers that I kept for “old times sake.” A quick check indicated that the radio still seemed to work but a short length of hookup wire connected to the antenna terminals left much to be desired in terms of what could be received on the shortwave bands. Obviously, it needed a decent antenna but the task of stringing a long-wire at my present home was not practical as I did not plan to really