This manual supersedes Navships. 94344(A) Oscilloscope AN/USM-117A, 117B, 117C, High The purpose of this technical manual is to supply information NOTE: T RANSISTOR 0706 2N338 CAN BE INTERCHANGED WITH 2N76 0A. Commercial/Military aircraft manuals, engineering drawings, technical orders and more. 33A1-13-432-1, OPR AND MAINT INSTR WITH P/B -, AN/USM-338. General Support and Depot Maintenance Manual: Oscilloscope AN/USM-281 A GS Manual: Multimeter, ME-338/U, Special Tools List: Multimeter ME-338/UName Designation Item Parameters Quantity Audio Oscillator AN/ URN- 127 ±2 percent accuracy, 0.5 to 6 kHz 1 Oscilloscope AN/USM-338 Bandwidth Tool Kit AN/USM-15. Multimeter, Digital AN/USM-341 (or equivalent multimeter). PCB extractor/inserter. Oscilloscope AN/USM-338 (or equivalent oscilloscope). Nov 21, 2015 - Thanks again for the manual. My room mate and I bought this thing, a mil-spec 'waterproof'' AN/USM-339, mostly for the cool-factor of owning the famous Field Instructions for Painting and Preserving Electronics Command Equipment Including Technical Manual: Oscilloscope AN/USM-338 Section I. B-1. You can download it by clicking here: HP1707B/AN/USM-338 Manual. Here I present some large scale photos of the guts of my AN/USM-338 Oscilloscope. Why