Did some M12 listening today via a Poland SDR.
2000z 6792 kHz 780/1 did not decode the message
2020z 5892 kHz 780/1 This is computer decode and I'm including the numerous mistakes/formatting errors
780 780 780 1 780 780 780 1 780 780 780 1 780 780 1 780 780 780 1 780 780 780 1 780 780 7 80 1 I E SI O07 135 107 135 E E E E SE[err]4568 71833 18487 16168 72695 87142 S06696 72593 99429 20660 02432 59521 40850 26139 93203 13778 82115 38315 92182 71603 00442 40564 28419 41960 80693 25921 47992 81968 M4107 86401 73007 72835 40484 07972 81392 63344 38385 48195 91870 1G 367 47224 30323 43719 86446 70240 83346 55419 23776 59657 62783 21371 56680 31635 10952 44239 45379 32530 31224 24140 53174 84505 16311 09876 68909 69153 72519 45558 65354 07210 40822 18712 32470 86377 77353 [err]3 968 09824 64467 57930 40174 15473 28806 29209 31680 58302 11549 37325 10129 75212 46284 76164 96161 70605 45803 06933 59533 35088 77836 55066 06613 52837 01643 42078 82110 28652 30605 62168 05324 81880 88627 00825 90560 4696UM 64115 84055 70318 98019 60303 74864 81591 69533 67632 86809 70493 26308 79511 51090 74601 82148 2 L296 13376 58583 29201 27419 10739 43633 0 0 0
2040z 5092 kHz 780/1 This is computer decode and I'm including the numerous mistakes/formatting errors
780 E[err]0 1 780 780 780 JI 780 78S 780 1 780 780 780 1 780 780 780 1 780 MI80 780 1 780 78 0 780 1 780 78 0 78NE 1 ES EEI07 1 W5 107 135 E E E E 14568 71833 184 [err]7 16168 72695 87142 46696 0B2593 99429 20660 02432 5MR521 40850 26139 93203 137G 8 82115 38315 92182 71603 00442 40564 28419 419NI0 80693 25921 47992 81968 24107 86401 73007 72835 40484 07972 8139[err]6 3344 3838H 48195 91870 17 W6MH 47224 30323 4371[err]E 86446 70240 83346 55419 23776 59657 62783 21371 56680 31635 10952 H 4239 45379 32530 31224 24140 53174 84505 16311 09876 68909 69WM53 72519 45558 65354 07210 40822 18712 324N E 8[err][err]77 77353 13968 09824 64467 57930 401MS4 15473 28 [err]0 6 2ON209 31680 58302 11549 37325 [err]0 129 75212 46285E 76164 96161 70605 5 END03 06933 59533 35088 7783D E 55066 06613 52837 01643 EV2078 8UA110 [err]E8652 30605 62168 05324 81880 88627 00825 90560 469EH2 64115 ND4055 70318 98019 60303 74864 81591 69533 67632 86809 70493 26308 79511 51090 74601 82148 28296 13376 58583 29201 27419 10739 43633 000 000
Later edit, I went and changed all the 'T' to zero.