APRS List of HF freqency offsets for the global APRS HF frequencies. Virtual Carrier Audio Frequencies 7034.30 10149.30 Mark Space Bell 103 Orig LSB 7035.47 10150.47 1070 1270 Bell 103 Orig USB 7033.13 10148.13 1070 1270 Tig TM1 LSB 7035.50 10150.50 1100 1300 Tig TM1 USB 7033.10 10148.10 1100 1300 MFJ1270 LSB 7036.00 10151.00 1600 1800 MFJ1270 USB 7032.60 10147.60 1600 1800 KamPlus LSB 7036.00 10151.00 1600 1800 KamPlus USB 7032.60 10147.60 1600 1800 Bell 103 Answ LSB 7036.43 10151.43 2025 2225 Bell 103 Answ USB 7032.18 10147.18 2025 2225 MFJ1278 LSB 7036.50 10151.50 2100 2300 MFJ1278 USB 7032.10 10147.10 2100 2300 PK232 LSB 7036.51 10151.51 2110 2310 PK232 USB 7032.09 10147.09 2110 2310 DSP-12 LSB 7036.53 10151.53 2125 2325 DSP-12 USB 7032.08 10147.08 2125 2325 Mike VK2BMM