Hi all,ive got strange readings on my modded vna,the mods are sma to bnc adapters on it,ive calibrated it with homebrew load and shorted termination and used a lenth of rg-58u cable with bnc fittings for the thru callibration,its fine from 130-450 mhz,its from 1-30mhz i get the strange readings,see pics,i assume its due to the capacitance of the sma to bnc adapters?,if so is there any way to compensate for this?,cheers in advance.
