hello, mmana does not calculate well the roe, tests performed and compared with eznec there is a great difference in calculation, antennas of homemade construction calculated with mmana and using vna as a ROE meter do not resemble anything the graph of the program with the real vna, I have to say that the antenna power is done with coaxial and shock with ferrites, I speak of UHF antennas, instead with the measurements with eznec the curve is almost identical, I do not know if it is because of the calculation engine but the difference is very large, if there was an update take it into account, thanks .a greeting
