Vectronics VEC-1002K - Manual (Page 27)

VEC-1002K Owner's Manual 2 Meter FM Receiver Kit
25
10 4.4 22 5.2
11 4.4 23 1.2-3.0
12 .2 (no sig) 24 0
*Squelch open voltage (becomes 3.8 when squelch is "logic-high" or closed)
If you find one or more pins that read radically different from the chart value, it
may indicate the device is bad--or it may mean a circuit problem exists in that
portion of the radio. If you have technical skills and can read a schematic
diagram, this will help you. For example, if you get an unreasonable reading on
pin 23 of U1, the schematic shows that the radio's voltage-tuning circuitry is
connected here. You might look for defective or misplaced components on that
portion of the circuit board as a potential cause. If, despite your best effort, you
cannot solve a problem with your radio, kit repair services are available through
Vectronics. See the warranty on the inside front cover for complete
instructions.