User talk:Buckthorn
Recently I acquired a NELSON ROSS PSA 205 Plug-In Spectrum Analyzer. It is very similar to the PSA 225, which is in the files. It fits into the wider bay of 500-Series Scopes. The interior shows building blocks which look almost identical to those of the 225. It also has the same frequency range. My 225 shows signs of life, but does not operate yet. I could not find a manual for the 205.