APRS USER DEFINED DATA FORMATS LIST                      17 Apr 2020
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17 Apr 20 added {Dx for WB2OSZ direwolf software TNC
09 Jun 17 Added {BT for Bricsat Telemetry & {BP for jpg Pix
18 Mar 15 added {Q1 and {Q2 for QIKcom1 data
17 Oct 12 added {Sx for SARTrack
12 Feb 10 added {I format for RFID tags
27 Aug 08 Added {KY for University of Kentucky
06 Dec 04 Added {P for Propnet.

Although provision was made in the APRS SPEC for new formats for 
experimentation and special use applications, this experimental
escape sequence should not be used for applications where broad user
receipt or backwards compatibility is needed.  Remember, that as of
June 2004, almost 55% of packet stations on the air were using
FIXED firmware (radios) that may not be easily upgraded.

Therefore, authors are encouraged to try to use MESSAGE, STATUS or 
POSIION comment field formats for these special uses where possible 
to maintain backwards compatibility with old systems.  

The following experimental formats have been reserved:
 
HEADER  AUTHOR   DESCRIPTION
------  -------- ----------------------------------------------------
 {BT    KB3UKS   For BRICSAT Telemetry
 {BP    KB3UKS   For BRICSAT Pictures
 {Dx    WB2OSZ   Direwolf software TNC
 {Fnn   WB4APR   nn is a 2 byte descriptor of MITEL GPS data formats
 {HT    WB4APR   For HAM-Trail reporting devices (tbd) 
 {ID    WB4APR   RFID tags
 {K1    WB4APR   "K" for Keps and "1" for NASA One line.
 {K2n   WB4APR   For NASA two line elements. "n" is line 1 or 2.
 {KY    KI4YLJ   For KYSAT (University of Kentucky)
 {Q1    WB4APR   For QIKcom-1 data
 {Q2    WB4APR   For QIKcom-2 data
 {Sx    ZL4FOX   for SARTrack a SAR specific set of protocols
 {TP    WB4APR   Telemetry for PCSAT2 Solar Panel Experiments
 {TU    WB4APR   Telemetry for PCSAT2 Solar Panel Experiments
 {x1    J Bennet for WX
 {x2    J Bennet for WX

de WB4APR, Bob