At 2/11/2007 16:25, you wrote: >This discussion about preamps and matching is interesting. > >So, what about the return loss of <barefoot> receivers, you know, the >ones we all know and love like Mastr II, Micor, UHF, VHF. Has anyone >done measurements on these receivers, and how those measurements might >change with adjustments in helical tuning? > >Laryn K8TVZ
W.r.t. receivers with relatively high intrinsic noise figures, tuning for best match should yield the lowest noise figure since the high NF is usually due to lossy filtering ahead of the 1st active device. Bob NO6B
