Uniden PRO520E (UT-317A)
Documentation Project
CBTricks.com

Integrated Circuits Internal Diagrams

LB1423

LED Meter Driver

M5223
Squelch and AGC Amplifier

TDA1905
Audio Amplifier

TDA1220B

2nd MIX
2nd IF Amp
DET
AGC

SM5124A
PLL Frequency Synthesizer

LA1185

RF Amp
1st MIX

Disclaimer: Although the greatest care has been taken while compiling these documents,

we cannot guarantee that the instructions will work on every radio presented.