DSDPlus DSDPlus v2.242 Unhandled PDU message

[BM82557]

Not sure what this means but am posting it in case it is of interest to the developers -

2020/03/21 20:43:36 Freq=770.706250 NAC=4A6 Unhandled PDU: [00111110] A29C99B001E838F29601525CD8D4E79C
2020/03/22 13:55:08 Freq=770.706250 NAC=4A6 Unhandled PDU: [00000100] 0C1CC62190EA7C0014A2011236FE7000040040
2020/03/23 13:09:48 Freq=770.706250 NAC=4A6 Unhandled PDU: [00011011] 051E2420D02C40347035143570151C02
2020/03/23 14:38:21 Freq=770.706250 NAC=4A6 Unhandled PDU: [00001101] 51E4E9793FCFF6E7C28A9E0E6CF2B02B98F796
2020/03/23 16:52:29 Freq=770.706250 NAC=4A6 Unhandled PDU: [01010010] 9865E428BE856556628841DA6B44F97D
2020/03/23 19:39:37 Freq=770.706250 NAC=4A6 Unhandled PDU: [10100101] 81FE69D604B923505E8AC08D4FFB2F3F
2020/03/23 23:04:43 Freq=770.706250 NAC=4A6 Unhandled PDU: [10110100] 1A2F65C2E9533D8E24073CDB2BAE5BAC0507CE
2020/03/24 00:34:14 Freq=770.706250 NAC=4A6 Unhandled PDU: [10110010] 5C8E8D3EBA1C2A0EC8A088021A63A742
2020/03/24 13:10:29 Freq=770.706250 NAC=4A6 Unhandled PDU: [10010010] 59AE8D3EBA1C2A0E40A090120A63B752
2020/03/24 14:52:19 Freq=770.706250 NAC=4A6 Unhandled PDU: [01010111] BCE098ADD01F3315CE7B6B84332DE95A
2020/03/25 16:42:57 Freq=774.081250 NAC=4AF Unhandled PDU: [01101111] A5C691B32E8D47BADAF2D948F85FAA82
2020/03/27 18:54:24 Freq=770.706250 NAC=4A6 Unhandled PDU: [10101001] 62D7AB65AE6F241453A6A5FE38B8DA45
2020/03/27 22:19:19 Freq=770.706250 NAC=4A6 Unhandled PDU: [00000011] 0433190011007E0034A6611117347000
2020/03/28 11:11:11 Freq=774.581250 NAC=4A6 Unhandled PDU: [00010111] 893084D1E4672F69CF3F5E9A352DE95C
2020/03/29 17:52:08 Freq=770.706250 NAC=4A6 Unhandled PDU: [11101100] 0134A2011216FE700104351B00000018
2020/03/29 17:53:36 Freq=770.706250 NAC=4A6 Unhandled PDU: [01111101] D6CAE2645F42C762D1B530005CA8690F
2020/03/30 13:49:35 Freq=774.581250 NAC=4A6 Unhandled PDU: [10111010] BE87CFCD10EA3D4A050CE5714D2270E8
2020/03/31 10:02:57 Freq=770.706250 NAC=4A6 Unhandled PDU: [01111111] DAD672D58C69CB1FAA6A7BFF4E42F189
2020/03/31 13:40:53 Freq=770.706250 NAC=4A6 Unhandled PDU: [10101100] 9C539D2FB9D1906ECCAC3B5959C85A1E