HP48 Receiver Control Software

Use a scientific handheld calculator for controlling your Shortwave Receiver and avoid the problems associated with RFI from a full size computer. Read a discription of the system in the HP48 JRC NRD535D Controller description.

Try out the software by downloading nerd.zip.

You will also need some files of Frequencies and Schedules of stations currently on the air:

na.lst: Countries, Frequencies and Times of broadcasts to North America
tropic.lst: Countries, Frequencies and Times of Tropical Stations and other difficult DX.
air.lst: Air Traffic Frequencies on the shortwave band.
malay.lst: Countries, Frequencies and Times of Bahasa Malaysia and Bahasa Indonesia broadcasts throughout the world.