     7   6   5   4   3   2   1   0   7   6   5   4   3   2   1   0   7   6   5   4   3   2   1   0   7   6   5   4   3   2   1   0
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
00 | Unknown, set to 0x000         | Unused                                                                                     ...
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
04  ...                            | FM APRS TX delay in 20ms      | Signaling type                | CTCSS tone                    |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
08 | DCS code, little-endian                                       | Manual TX interval in seconds | Auto TX interval in 30s       |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
0c | FM APRS Monitor enable        | Fixed location flag           | Latitude degrees              | Latitude minutes              |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
10 | Latitude seconds              | South flag                    | Longitude degrees             | Longitude minutes             |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
14 | Longitude seconds             | West flag                     | Destination call, 6 x ASCII, 0-padded                      ...
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
18  ...                                                                                                                            |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
1c | Destination SSID              | Source call, 6 x ASCII, 0-padded                                                           ...
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
20  ...                                                                                            | Source SSID                   |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
24 | Path, 20 x ASCII, 0-padded                                                                                                 ...
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
    ...                                                                                                                         ...
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
34  ...                                                                                                                            |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
38 | Unused set to 0x00            | ASCII APRS Symbol Table       | ASCII APRS Map Icon           | Transmit power                |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
3c | Prewave delay in 10ms         | Unknown set to 0x01           | Unknown set to 0x03           | Unknown set to 0xff           |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
40 | DMR APRS Sys 0 channel index, uint16, litte-endian            | DMR APRS Sys 1 channel index, uint16, litte-endian            |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
44 | DMR APRS Sys 2 channel index, uint16, litte-endian            | DMR APRS Sys 3 channel index, uint16, litte-endian            |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
48 | DMR APRS Sys 4 channel index, uint16, litte-endian            | DMR APRS Sys 5 channel index, uint16, litte-endian            |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
4c | DMR APRS Sys 6 channel index, uint16, litte-endian            | DMR APRS Sys 7 channel index, uint16, litte-endian            |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
50 | DMR APRS Sys 0 destination ID, 8-digit BCD, big-endian                                                                        |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
54 | DMR APRS Sys 1 destination ID, 8-digit BCD, big-endian                                                                        |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
58 | DMR APRS Sys 2 destination ID, 8-digit BCD, big-endian                                                                        |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
5c | DMR APRS Sys 3 destination ID, 8-digit BCD, big-endian                                                                        |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
60 | DMR APRS Sys 4 destination ID, 8-digit BCD, big-endian                                                                        |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
64 | DMR APRS Sys 5 destination ID, 8-digit BCD, big-endian                                                                        |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
68 | DMR APRS Sys 6 destination ID, 8-digit BCD, big-endian                                                                        |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
6c | DMR APRS Sys 7 destination ID, 8-digit BCD, big-endian                                                                        |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
70 | DMR APRS Sys 0 call type      | DMR APRS Sys 1 call type      | DMR APRS Sys 2 call type      | DMR APRS Sys 3 call type      |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
74 | DMR APRS Sys 4 call type      | DMR APRS Sys 5 call type      | DMR APRS Sys 6 call type      | DMR APRS Sys 7 call type      |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
78 | Enable roaming support        | DMR APRS Sys 0 time slot      | DMR APRS Sys 1 time slot      | DMR APRS Sys 2 time slot      |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
7c | DMR APRS Sys 3 time slot      | DMR APRS Sys 4 time slot      | DMR APRS Sys 5 time slot      | DMR APRS Sys 6 time slot      |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
80 | DMR APRS Sys 7 time slot      | Rep. activation delay         | APRS display time             | Unknown                    ...
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
    ...                                                                                                                         ...
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
9c  ...                                                                                                                            |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
a0 | Unknown                                                                                                                    ...
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
a4  ...                                                            | Fixed height in feet, uint16, little endian                   |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
a8 |RST|RNF|RWX|RMS|RIT|ROB|RME|RPO| 0   0   0   0   0   0   0 |ROF| FM APRS width                 | Pass all enable               |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
ac | FM ARPS Frequency 0 in 10Hz, 8 digit BCD, big-endian                                                                          |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
b0 | FM ARPS Frequency 1 in 10Hz, 8 digit BCD, big-endian                                                                          |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
b4 | FM ARPS Frequency 2 in 10Hz, 8 digit BCD, big-endian                                                                          |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
b8 | FM ARPS Frequency 3 in 10Hz, 8 digit BCD, big-endian                                                                          |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
bc | FM ARPS Frequency 4 in 10Hz, 8 digit BCD, big-endian                                                                          |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
c0 | FM ARPS Frequency 5 in 10Hz, 8 digit BCD, big-endian                                                                          |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
c4 | FM ARPS Frequency 6 in 10Hz, 8 digit BCD, big-endian                                                                          |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
c8 | FM ARPS Frequency 7 in 10Hz, 8 digit BCD, big-endian                                                                          |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
d0 | Unknown                                                                                                                    ...
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
    ...                                                                                                                         ...
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
fc  ...                                                                                                                            |
   +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+

Field description:
 - FM APRS TX delay: 0=0ms, 1=20ms, ..., 255=5100ms
 - Signaling type: 0=off, 1=CTCSS, 2=DCS, default=off
 - CTCSS Tone:  0= 61.2Hz,  1= 67.0Hz,  2= 69.3Hz,  3= 71.9Hz,  4= 74.4Hz,  5= 77.0Hz,  6= 79.7Hz,
                7=82.5Hz,   8= 85.4Hz,  9= 88.5Hz, 10= 91.5Hz, 11= 94.8Hz, 12= 97.4Hz, 13=100.0Hz,
               14=103.5Hz, 15=107.2Hz, 16=110.9Hz, 17=114.8Hz, 18=118.8Hz, 19=123.0Hz, 20=127.3Hz,
               21=131.8Hz, 22=136.5Hz, 23=141.3Hz, 24=146.2Hz, 25=151.4Hz, 26=156.7Hz, 27=159.8Hz,
               28=162.2Hz, 29=165.5Hz, 30=167.9Hz, 31=171.3Hz, 32=173.8Hz. 33=179.9Hz, 34=183.5Hz,
               35=186.2Hz, 36=189.9Hz, 37=192.8Hz, 38=196.6Hz, 39=199.5Hz, 40=203.5Hz, 41=206.5Hz,
               42=210.7Hz, 43=218.1Hz, 44=225.7Hz, 45=229.1Hz, 46=233.6Hz, 47=241.8Hz, 48=250.3Hz,
               49=254.1Hz
 - Path: 20 x ASCII, 0-padded path string. Format is comma-separated CALL1-SSID,CALL2-SSID,...
 - DMR APRS Sys N channel index: uint16 channel index, 0-based, little-endian, [0,4000],
      0x0fa0=VFO A, 0x0fa1=VFO B, 0x0fa2=Selected
 - DMR APRS Sys N time slot: 0 = Channel, 1 = Timeslot 1, 2 = Timeslot 2
 - Transmit power: 0=low, 1=mid, 2=high, 3=turbo.
 - Pewave delay: in multiples of 10ms [0,2550ms], default=0ms.
 - Manual TX interval: n+1 seconds. [0,255], default=0s
 - Auto TX interval: 0=Off, 1=30s, ..., 255=7650s, default=off
 - FM APRS Monitor enable: If enabled, the radio will monitor send FM APRS transmissions. default=off
 - Rep. activation delay: 0=Off, 1=100ms, ..., 10=1000ms.
 - APRS display time: 0=3s, 1=4s, ..., 12=15s, 13=infinite, default=3s
 - RPO: Report position flag.
 - RME: Report MIC-E flag.
 - ROB: Report object flag.
 - RIT: Report item flag.
 - RMS: Report message flag.
 - RWX: Report weather flag.
 - RNF: Report NEMA flag.
 - RST: Report status flag.
 - ROF: Report other flag.
 - FM APRS width: 0=narrow, 1=wide.
 - Pass all: 0=Off, 1=On, no idea.
