Hi Bill,
thanks for your suggestions. I tried with your example file: ok, it works perfectly!
I tried again with my own file without success even if:
so...I am probably making a subtle error somewhere else.
COM Combine all
K19Q06R* C2019 08 30.40261 01 43 42.46 +13 32 19.9 20.5 GV~3CrOG96
K19Q06R C2019 08 30.40780 01 43 43.25 +13 32 32.5 20.6 GV~3CrOG96
K19Q06R C2019 08 30.41299 01 43 44.07 +13 32 44.6 20.6 GV~3CrOG96
K19Q06R C2019 08 30.41818 01 43 44.88 +13 32 57.2 20.5 GV~3CrOG96
….
K19Q06R ^C2019 10 06.34035 04 24 42.13 +45 35 42.8 19.8 RoET098695
K19Q06R ^C2019 10 06.34612 04 24 44.42 +45 35 59.8 19.6 RoET098695
K19P02R* C2019 08 10.60192 00 58 54.652+03 07 36.45 20.9 wU~3BrxF51
K19P02R C2019 08 10.60677 00 58 55.225+03 07 43.91 20.9 wU~3BrxF51
K19P02R C2019 08 10.61162 00 58 55.801+03 07 51.30 20.8 wU~3BrxF51
...
--Alessandro