Robotron Pty Ltd G5P 用户手册

下载
页码 87
WiNRADiO G3XX User’s Manual
 
Under these buttons there is a Band description window. This window 
shows the band allocation of the currently tuned frequency. While the 
displayed band descriptions are specific to the North American standard, they 
are based on international treaties and therefore are generally applicable 
worldwide with minor differences, which can be easily edited by the user.   
The band descriptions can be overridden with a call sign or a user-defined 
description of a particular frequency stored in memory. This overrides the band 
description for a particular frequency only. 
 
 
 
It is also possible to change the naming and frequency allocations for entire 
frequency bands. This can be done by editing the file called bands.csv in the 
WiNRADiO installation folder. (This is a standard “comma-separated-value” 
format file which can be edited using a spreadsheet application, such as 
Microsoft Excel.) 
 
 
Did you know? 
VFO stands for Variable Frequency Oscillator. This is a historical term dating 
back to the era of analog tuned radios. Before digitally tuned receivers were 
invented, there was no easy way to store and recall frequencies. Professional 
receivers had switchable oscillators where the oscillators (and their variable 
capacitors) themselves served as analog frequency memories. The name and 
the net effect remain, but the principle has changed: There is no need for 
multiple oscillators in modern receivers to implement this function. The 
frequency is simply stored in a digital memory. 
 
 
17