Cubical Quad Antenna Designpop
- By N6VNG, can be used to determine the element lengths and the gamma match values for different frequencies, includes link to excel files with formulas to dimension your quad antenna.
Texas Packet Radio Society
- TPRS invented TexNet, a network using a combination of wireline and wireless technology to link hams in most of the major population centers in Texas, Oklahoma, Arkansas, Missouri
- FFTDSP is a PC program which can detect weak radio signals in real time. Uses the PC's soundcard and advanced signal processing techniques, extracts and displays weak signals from the receiver audio.