Series V RangeMaster
Owner’s Manual
April 2020
5
SCHEMATICS
Schematic of the RangeMaster Gen. V.
There are three individual transistor modules, each with its own biasing
resistors (Rb and Re); these resistors vary depending on the values
required to bias each transistor into the middle of its range, and they are
individually selectable via the 3-way rotary switch on the back of the unit.
The frequency cutoff selector is a 3-position toggle switch, also on the
back of the unit, which allows the user to select one of three Boost
ranges: Stock, Wide, and Full.
Many PNP (positive ground) Germanium transistors work well in the
RangeMaster; a partial list is noted.