ham radio tools的解释一个相当不错的软件大家可以试着试用一下
ham radio tools is a simple program that is to assist ham radio operators. ham radio tools comes complete with a contact log and handy calculators and tables that will assist the beginning ham operators and even the pros.
** now includes band limits for general and extra **
with ham radio tools you can:
-save each contact to a log database stored on the phone
-review and edit each log entry
-search for keywords in different fields of the log entry
-calculate a simple quarter and half wave antenna length
-calculate the wavelength of a frequency
-many more
