John! It worked! Thank you so much! I did have to set the Local IP address on my DummyRepeater to 0.0.0.0 in order for it to work, just setting the HB IP to 0.0.0.0 and leaving the laptop´s IP to 127.0.0.1 did not cut it.
I did see the following output from the gateway when I transmitted:
M: 2017-02-09 19:46:42: Linking TG9AOR A to DCS502 B
M: 2017-02-09 19:46:42: Removing outgoing D-Plus link TG9AOR A, REF012 E
M: 2017-02-09 19:46:42: DCS ACK message received from DCS502 B
M: 2017-02-09 19:46:42: DCS link to DCS502 B established
M: 2017-02-09 19:46:42: D-Plus disconnect acknowledgement received from REF012 E
M: 2017-02-09 19:46:42: D-Plus link to REF012 E has failed
M: 2017-02-09 19:46:43: Remote control user has logged out
M: 2017-02-09 19:46:47: USER: M1PRO NOT FOUND
M: 2017-02-09 19:46:48: USER: E75FM E74OF C E74OF G 146.255.136.87
M: 2017-02-09 19:46:54: USER: TG9AOR NOT FOUND
M: 2017-02-09 19:46:59: USER: M1PRO NOT FOUND
M: 2017-02-09 19:47:08: USER: E74KS E74KS B E74KS G 37.208.36.157
M: 2017-02-09 19:47:17: USER: WA9MNF WA9MNF B WA9MNF G 67.167.62.94
M: 2017-02-09 19:47:19: USER: G4PEF G4PEF B G4PEF G 91.125.94.243
But, if transmitted with my radio the output was different, as in not unknown:
M: 2017-02-09 19:50:48: From RF
M: 2017-02-09 19:50:48: 0000: 24 24 43 52 43 38 32 33 34 2C 54 47 39 41 4F 52 *$$CRC8234,TG9AOR*
M: 2017-02-09 19:50:48: 0010: 2D 41 3E 41 50 49 35 31 2C 44 53 54 41 52 2A 3A *-A>API51,DSTAR*:*
M: 2017-02-09 19:50:48: 0020: 21 31 34 33 32 2E 32 38 4E 2F 30 39 30 32 37 2E *!1432.28N/09027.*
M: 2017-02-09 19:50:48: 0030: 32 33 57 2F 2F 41 3D 30 30 36 32 38 34 50 6F 72 *23W//A=006284Por*
M: 2017-02-09 19:50:48: 0040: 74 61 62 6C 65 0D 24 24 43 52 43 38 32 33 34 2C *table.$$CRC8234,*
M: 2017-02-09 19:50:48: 0050: 54 47 39 41 4F 52 2D 41 3E 41 50 49 35 31 2C 44 *TG9AOR-A>API51,D*
M: 2017-02-09 19:50:48: 0060: 53 54 41 52 2A 3A 21 31 34 33 32 2E 32 38 4E 2F *STAR*:!1432.28N/*
M: 2017-02-09 19:50:48: 0070: 30 39 30 32 37 2E 32 33 57 2F 2F 41 3D 30 30 36 *09027.23W//A=006*
M: 2017-02-09 19:50:48: 0080: 32 38 34 50 6F 72 74 61 62 6C 65 0D 24 24 43 52 *284Portable.$$CR*
M: 2017-02-09 19:50:48: 0090: 43 38 32 33 34 2C 54 47 39 41 4F 52 2D 41 3E 41 *C8234,TG9AOR-A>A*
M: 2017-02-09 19:50:48: 00A0: 50 49 35 31 2C 44 53 54 41 52 2A 3A 21 31 34 33 *PI51,DSTAR*:!143*
M: 2017-02-09 19:50:48: 00B0: 32 2E 32 38 4E 2F 30 39 30 32 37 2E 32 33 57 2F *2.28N/09027.23W/*
M: 2017-02-09 19:50:48: 00C0: 2F 41 3D 30 30 36 32 38 34 50 6F 72 74 61 62 6C */A=006284Portabl*
M: 2017-02-09 19:50:48: 00D0: 65 0D *e.*
M: 2017-02-09 19:50:48: APRS ==> TG9AOR-A>API51,DSTAR*,qAR,TG9AOR-B:!1432.28N/09027.23W//A=006284Portable
M: 2017-02-09 19:50:49: USER: TG9AOR TG9AOR B TG9AOR G
I am ver very happy to have completed this project, I really appreciate your support. Have a great day!
TG9AOR