Ramsey Electronics Phone Patch Mixer Kit PPM3 - Manual (Page 13)

PPM3 Page 13
ˆ 2 SSM2165-1S surface mount microphone amplifier ICs (U1,U3)
Miscellaneous Components
ˆ 3 DPDT switches (S1,S2,S3)
ˆ 1 1/4” stereo jack (J7)
ˆ 1 Dual RJ11 jack (J1)
ˆ 1 2.1mm power jack (J4)
ˆ 2 Dual RCA jacks (J2,J3)
ˆ 1 Isolation transformer [large yellow part with 6 leads] (T1)
ˆ 1 Piece of heat shrink tubing