Garmin apollo sl30 comm Manuale Utente

“V”.................Message Class.  This is a VHF NAV message. 
“20”................Message Identifier. 
vvvv ...............VOR station identifier. Note that if the station identifier is less than four 

characters, then the trailing characters will be filled with spaces. Station 
Identifiers are restricted to using ASCII characters 0-9 and A-Z. 

mk ..................Frequency: m = MHz, where m = desired MHz frequency – 30h, with the 

desired frequency ranging from 108 to 117, or 3Ch to 45h; k = kHz, where 
k = (desired kHz offset / 25 kHz) + 30h, with desired frequency range of 
000 to 975 kHz in 50 kHz steps, or the even numbers from 30h to 56h.  
Note that the field will be checked to ensure that it is in range and a valid 
VOR frequency.  Frequencies used for localizers, which are in the range 
of 108.10 to 111.95 MHz, will not be accepted in this message type.  

 

Example message: 
 $PMRRV20UBG<Sp>E@<chksm><CR><LF> 
 
VOR station identifier is “UBG  ”, VOR frequency is 117.400 MHz. 
 

This input command marks the end of a VOR list sent by a remote device. 
 
Message format: 

“V”.................Message Class.  This is a VHF NAV message. 
“21”................Message Identifier 

 
Example message: 
 $PMRRV21<chksm><CR><LF> 
 
Indicates the start of a remote VOR list. 
 

The following two commands work together in allowing remotely connected devices to provide 
a list of localizer frequencies associated with an airport to the SL30. The remote device should 
first send the Remote Localizer List Header command (message identifier 22), followed by a 
sequence of Remote Localizer Input commands (message identifier 23).  The SL30 maintains a 
single remote localizer list, so each new list received will replace any previous list.  Subsequent 
receptions of localizer lists for the same airport are ignored. There may be up to twenty entries in 
the remote Localizer list.  Any entries past twenty will be ignored. 
 

This input command marks the beginning of a Localizer list sent by a remote device.  It specifies 
the five character airport identifier associated with the localizer frequencies in the list.