What do you mean by "alternative" freq...? - Several years ago, the main calling freq was 11.176 kHz, - now - depending to the distance from aircraft to land-radio-station, - freq is 11.175 kHz... - actually the following freqs are in regular use: 4.742 kHz 6.712 kHz 6.739 kHz 8.992 kHz 9....
11.05.06-0733z - Supplementary info (aircraft type): yours 11.05.05 rea 209 - C17a - t 033115 - to Spang rea 792 - C17-- t 980049 - milgi - navpi pat 323 - C12 -- t 940323 - duke 28 - C12t - t 840158 - rea 176 - C141 - t 064634 - to Ramst rea 140 - C17a - t 033117 - to Ramst rea 813 - C130 - t 83128...
11.04.25-23.42z---Trend 11 -- could be F16c--t860264 - not sure, but the Trend 11 -- aircraft type and tail number fit into a long line of trend-flights +