Ramsey Electronics FM100B - C. Audio Mixer

FM100B • 24
C. AUDIO MIXER
While it is not completely seen, the audio mixer also involves some of the mi-
crophone section we just completed. This mixer section consists of out two
pairs of summing amplifiers, and some of the Auto AGC circuit. We will hold
off on the two big dual pots until later so do not install these in this section.
 1C. Install R88, a 1K ohm resistor (brown-black-red).
 2C. Install R73, a 22K ohm resistor (red-red-orange).
 3C. Install R79, a 10K ohm resistor (brown-black-orange).
 4C. Install R80, a 1K ohm resistor (brown-black-red).
 5C. Install R70, a 10K ohm resistor (brown-black-orange).
 6C. Install R69, a 22K ohm resistor (red-red-orange).
 7C. Install R48, a 10K ohm resistor (brown-black-orange).
 8C. Install R51, a 22K ohm resistor (red-red-orange).
 9C. Install R53, a 1K ohm resistor (brown-black-red).
 10C. Install R52, a 10K ohm resistor (brown-black-orange).
 11C. Install R43, a 22K ohm resistor (red-red-orange).
 12C. Install R62, a 1K ohm resistor (brown-black-red).
 13C. Install R78, a 10K ohm resistor (brown-black-orange). Note this resis-
tor is mounted in a stand-up fashion.