APRS SYMBOLS

     

APRS DISPLAY SYMBOLS by: Bob Bruninga, WB4APR (.pdf file)

 

Symbols for your APRS station or tracker can be done with one of three methods.

* The first is by assigning an SSID

* The second by embedding characters in the BText line within squiggly brackets (no longer used)

* The third by embedding the character in the SENDTO address (LTP, LOC, and Unproto) paths.

The third example is the PRIMARY way to indicate your symbol on the map. This info was derived from the APRSdos symbols.txt readme file. PLEASE NOTE THIS IS FOR MOBILES ONLY! Home stations will use different symbols.

SSID METHOD

SSID Symbol NWAPRS Station Type
-0 Dot Home Station
-1 Ambulance Home PBBS
-2 Bus  
-3 Firetruck  
-4 Bicycle  
-5 Yacht  
-6 Helicopter  
-7 Aircraft TH-D7 Station
-8 Ship Secondary Automobile
-9 Car Primary Automobile
-10 Motorcycle Primary WIDE
-11 Balloons Secondary WIDE
-12 Jeep  
-13 RV  
-14 Truck  
-15 Van TCPIP Only

The following method is recommended by most. Replace XX OR xxx where you would normally use GPSxxx via RELAY,WIDE3-3 or whatever your path:

BB Police Car, Sheriif LF Fire Truck (SSID = -3)
BH Small Aircraft (SSID = -7) LJ Jeep (SSID = -12)
BK SnowMobile LK Truck (SSID = -14)
BP Dot LP Puppy
P# Numeral Circle (replace # with 0-9) SJ Steam Shovel
A# Numbered Circle (replace # with 0-9) LS Ship/Power Boat (SSID + -8)
MT Motorcycle (SSID = -10) LU 18-Wheeler
MU RailRoad Engine LV Van (SSID = -15)
MV Car (SSID = -9) SS# Numbered Ship (replace # with 0-9)
PC Canoe SU# Numbered Truck (replace # with 0-9)
NV# Numbered Car (replace # with 0-9) SV# Numbered Van (replace # with 0-9)
PO Balloon (SSID = -11) LE Horse
PR Recreational Vehicle (SSID = -13) LB Bicycle
PS Shuttle (Please don't use this unless you're NASA) LA Ambulance
PU Bus (SSID = -2) DV# Numbered Aircraft (replace with 0-9)
PV ATV AS Satellite/PacSat
PX Helicopter (SSID = -6) HV Large Aircraft
PY Sail Boat/Yacht (SSID = -5) HS Jogger

For example GPSMV V RELAY,WIDE3-3 will show up as a car on all maps. GPSLB V RELAY, WIDE3-3 will show up as a bicycle.


 

The following is taken directly off the TAPR Website. (I made a few spelling corrections)

http://www.tapr.org/tapr/html/aprsdoc/SYMBOLS.TXT

 

SYMBOLS.txt 7.5b            APRS DISPLAY SYMBOLS





    APRS displays dozens of different symbols based on the 44th character

in the APRS standard position report according to the following table.

Notice that there are several generic shapes without designated descriptions,

so that users can tailor their symbology to a particular APRS net application.



NOTE!  Any particular symbol only has the meaning defined by the APRS net that

is using it.  So DO NOT INFER that an EMERGENCY or QUAKE symbol is a bonafide

emergency!  For example, the QUAKE symbol makes a nice bull's eye, useful for

highlighting certain objects (such as the HARA arena at Dayton).  As an

exception, lets reserve symbols like TORNADO and HURRICANE for the real thing

or clearly indicate it is a test.



SYMBOLS ON MAPS!  Not only can APRS symbols represent stations and objects

off-the-air, they can also be permanently embedded in maps.  To embed a label

in a map, simply make the first three characters of the label be a $ followed

by the symbol character, followed by a hexadecimal number from 1 to F that

indicates the desired color for the symbol.  The remaining 8 characters can

be used for a conventional label at the same location.  An example are the

VORTAC nav-aids in Alaska.  The Anchorage VORTAC appears as ANC on all maps

below 128 miles. The label entry is $VFANC,LAT,LONG,128.



AREAS ON MAPS!  You can define BOX/CIRCLE/LINE or TRIANGLE areas in all

colors, either open or filled in.  They can be any size from 60

feet up to 100 miles.  Simply move the cursor to the location, press HOME,

move the cursor to te lower right corner of the AREA and hit INPUT-ADD-OBJECTS-

AREA.  You will be prompted for the type of area shape, and the color.  Please

note that AREA shapes can only be defined by selecting the upper left corner

first, then the lower right second.  The line is an exception.  It is still

top to bottom, but the lower point can be to the left of the beginning point.

These symbols are useful for defining areas on MAPS in real-time to everyone

in the net.  For example, defining the area for a search-and-rescue, or adding

a special ROAD or ROUTE for a special event.  Be cautious in using the color

fill option, since all other objects in that area that occur earlier in your

PLIST will be obscured.  AND you do NOT know the order of other stations P-

lists.  See the AREAS section below for details.



SYMBOLS WITH STAND-ALONE GPS TRACKERS:  Since the stand-alone GPS/PACCOMM TNC

trackers output the raw GPS data over the air, instead an APRS formatted

position report, there are two methods that I have included for you to be able

to specify the symbol type.   First, there is a default SSID convention which

will be used if no other vehicle data is available.  See the table below.



  SSID SYMBOL       SSID  SYMBOL

              

  -0   Dot          -8    Ships (power)

  -1   Ambulance    -9    Cars

  -2   Bus          -10   Space objects

  -3   Fire truck   -11   Balloons

  -4   Bike         -12   Jeep

  -5   Yacht (sail) -13   RV (recreational vehicle)

  -6   Helo         -14   Truck

  -7   Aircraft     -15   Van



These defaults can be user definable on a net by net basis.  If your net

must have different defaults, contact me.



Secondly, you may indicate the desired symbol character surrounded by

braces {s} as the first 3 characters of the TNC BText.  Once the BText

has been received by a station, the mobile will then be displayed using

the specified symbol.  The advantage of this method is that more

symbols are available than from the SSID convention.  The disadvantage

is that the symbol is not displayed until AFTER at least one BText is

received.





APRS SYMBOL TABLE



-   ---------------

! - 3 vert bars (EMERGENCY)

" - RAIN

# - DIGI

$ - SUN (always yellow)

% - DX CLUSTER

& - HF GATEway

' - AIRCRAFT (small)

( - CLOUDY

) - Hump

* - SNOW

+ - Cross

, - reverse L shape

- - QTH

. - X

/ - Dot

0-9 Numerical Boxes

: - FIRE

; - Portable tent

< - Advisory flag

= - RAILROAD ENGINE

> - CAR (SSID-9)

? - GRID SQUARE (six digit.  Not shown below 8 miles)

@ - HURRICANE or tropical storm

A-J LETTERED CIRCLES ...............ALTERNATE WX DEFINITIONS:

K - School                          A - reserved

L - Lighthouse                      B - Blowing Snow

M - MacAPRS                         C - reserved

N - Navigation Buoy                 D - Drizzle

O - BALLOON                         E - Smoke

P - Police                          F - Freezing rain

Q - QUAKE                           G - Snow Shower

R - RECREATIONAL VEHICLE            H - Haze

S - Space/Satellite                 I - Rain Shower

T - THUNDERSTORM                    J - Lightening

U - BUS

V - VORTAC Nav Aid

W - National WX Service Site

X - HELO  (SSID-5)

Y - YACHT (sail SSID-6)

Z - UNIX X-APRS

[ - SOLID BOX  (BBS's)

\ - TRIANGLE   (DF)     

] - BOX with X (PBBS's)

^ - LARGE AIRCRAFT

_ - WEATHER SURFACE CONDITIONS (always blue)

` - Satellite Ground Station

a - AMBULANCE

b - BIKE

c - DX spot by call sign

d - Dual Garage (Fire dept)

e - SLEET

f - FIRE TRUCK

g - GALE FLAGS

h - HOSPITAL

i - IOTA (islands on the air)

j - JEEP (SSID-12)

k - TRUCK (SSID-14)

l - AREAS (box, circle, line, triangle) See below

m - MILEPOST (box displays 2 letters if in {35})

n - small triangle

o - small circle

p - PARTLY CLOUDY

q - GRID SQUARE (4 digit.  Not shown below 128 miles)

r - ANTENNA

s - SHIP (pwr boat SSID-8)

t - TORNADO

u - TRUCK (18 wheeler)

v - VAN (SSID-15)

w - FLOODING (water)

x - diamond (NODE)

y - YAGI @ QTH

z - WinAPRS

{ - FOG

| - reserved (Stream Switch)

} - diamond with cross

~ - reserved (Stream Switch)





AREAS: The new format for specifying special areas uses the CSE/SPD field to

provide the additional information as follows:



    $CSE/SPD...   Normal Field description

    lTyy/Cxx...   Where:  l (lower case L) is the symbol for "LOCATION SHAPES"

                          T is the Type of shape:  0=circle, 1=line, 2=ellipse

                                                   3=triangle 4=box

                                                   add 5 to these => color-in

                          C is the color from 0 to 15.  For colors greater than

                            9, the / is replaced with a 1.

                         yy is the sqroot of the latitude offset in 1/100ths

                         xx is the sqroot of the longitude offset

                         

These offsets are ALWAYS positive to the right and down, except for the

special case of a lower right quadrant line, these are given the Type of 6

and are drawn down and to the left.



EXTENSION ALPHABET:  There is potential for an alternate symbol alphabet.

This alternate alphabet is indicated by a backslash character instead of

the / character between the LAT/LONG fields. So far, we have NOT defined any

new symbols to use this alternate alphabet.  But if you just GOT TO have that

special symbol, let me know.  Now there is potential room to add it.



NWS WX SYMBOL EXTENSION:  I have re-defined several of the LETTERED BOXES

to have alternate WX symbols.  Any user can toggle on or off these symbols.

Use the WX-UseNWSsyms command.  Also, with WX symbols ON, the letters WX

will appear on the control line instead of CW.  Also some of the normal

APRS wx symbols are re-drawn to match the standard NWS symbol.



ALTERNATE NWS Symbols        MODIFIED EXISTING SYMBOLS

---------------------        --------------------------

 D - Drizzle                 " - Rain

 E - Smoke                   * - Snow

 F - Freezing rain           e - Sleet

 G - Snow Shower             { - Fog

 H - Haze

 I - Rain shower

 J - Lightening



HURRICANES, TROPICAL STORMS and DEPRESSIONS:  These symbols will be

differentiated by colors red, yellow, and blue.  Additionally a radius

of Hurricane and also Tropical storm winds will also be shown if the

format detailed in WX.txt is used.

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