^^ PRINCETON APPLIED RESEARCH MODEL 115 WIDE BAND PRE AMPLIFIER (DPA69)

PAR MODEL 114 Signal Conditioning Amplifier W/ 118 Differential Preamplifier S1

PAR Princeton Applied Research Gated Integrator Model 164 Plug-In Module

EG&G Princeton Applied Research Model 5209 Analog Lock-In Amplifier

EG&G PRINCETON APPLIED RESEARCH 128A LOCK-IN AMPLIFIER, 0.5 Hz - 100kHz

Princeton Applied Research Boxcar Average 162 And 2 Gates Integrator 166’s

Princeton Applied Research PAR 120 LOCK IN AMPLIFIER- For parts/repair

Miteq NSP1200-NVG Variable Gain Preamplifier 100 MHz to 12 GHz