"5ABH" 27.878MHz CW Transmits "5ABH" three times, then tail, then keys off for four minutes, hence sequence, been around for over 2 to 3 years. Last heard 23rd January 2016 539 report 0410z.
"IR2" 27.003MHz CW Transmits "IR2" three times, then tail, then keys off for four minutes, hence sequence, been around for over two to three years. Last heard 23rd January 2016 569 report 0345z.
"4IBH" 27.385MHz CW Not personally heard by me but reported by others in Australia coming from Asia, some format as 5ABH & IR2, so probably some group.
Some radio friends in Asia say the beam heading suggests China, not in Japan nor Philippines. Could be university propagation beacon? Military beacon? Possibly from Asiatic Russia? Not coming from Pacific region or North/South America, only heard during daylight hours on 11m when band open to Asia.
Google and other net searches has given me a zero result, someone must know these mystery beacons? Jack, Mount Piddington NSW (Yaesu FT-1000D, multi vertical & 240 random wire)