⭕ On the block today we have a very nice and 100% original unmolested example of the Scott type 4310 Stereomaster wide band broadcast monitor. This unit has been in dry climate controlled storage fro the past 40 years and is in excellent physical condition. This unit was purchased from the estate of the original owner who tells me it was working fine the last time it was used. I have not attempted to power the unit up as I am not equipped to do so and do not want to damage the unit in any way. Its usable sensitivity exceeded 1.9 UV, Selectivity was better than 50db, Spurious response rejection over 85 db, Separation better than 35 db, measured frequency response of 19 to 29 khz and capture ratio of a minimum of 2.2 db. The 4310 had 20 tubes , 21 diodes and weighed 25 lbs.