Thanks a lot Alan and David, I made very simple graphics of XW-1 elevarion x time; beacon freq received x time; beacon power output decoded from TLM x time. Not sure If is usuall but It seems that the beacon power raised from 80 mW to 175 mW in 3 minutes of monitoring. They are at: http://archangelo.net/misc/sat/xw-1/view.htm 73! Flavio PY2ZX