Hamtools is simply a collection of random tools that have been written for doing various things with amateur radio.
See the Download List
cq provides the ability to control a CAT controlled radio. It is designed to provide intelligent, prioritized frequency scanning.
signalrecord monitors a CAT controlled radio for changes in signal levels and records the results. The data can then be fed to sig2kml or signalcount for processing (or to your own tool; the output is simple XML)
sig2kml combines recorded signals and GPS track data to produce receiption quality maps either in png or kml format. This example below was created taking measurements while riding a bike.
signalcount counts signals recorded in the output from signalrecord and produces output suitable for bar graphs.
The NEC language is fairly complex to understand and use. ezrnec is designed to to simplify the modeling language.
# define a dipole # configurable values: define height 15ft define freq 14.200 # calculated values: define width ${468/@{freq}/2}ft output Calculated width: %{width} ft # the antenna wire tag=left 0,0, %{height} -@{width}, 0, %{height} wire tag=right 0,0, %{height} @{width}, 0, %{height} # apply a voltage on the first segment of the "left" most wire volt left 1 # sweep the simulation to the left and right of the defined frequency freq ${%{freq} - .5} ${%{freq} + .5}