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Assembly instructions static measurements – Elenco AM/FM Radio Kit User Manual

Page 28

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ASSEMBLY INSTRUCTIONS

STATIC MEASUREMENTS

Q9 BIAS

Figure 27

T7 - AM IF Coil

(White Dot)

TP4 - Test Point Pin

(see Figure A)

R40 - 10k

Ω

Resistor

(brown-black-orange-gold)

R41 - 470

Ω

Resistor

(yellow-violet-brown-gold)

R39 - 39k

Ω

Resistor

(orange-white-orange-gold)

C36 - .02

μ

F Discap (203)

or .022

μ

F Discap (223)

Q9 - 2N3904 transistor

(see Figure J)

C37 - .02

μ

F Discap (203)

or .022

μ

F Discap (223)

Connect your VOM as shown in Figure 27. Set the
VOM to read 9 volts DC and turn the power ON. The
voltage at the emitter of Q9 should be approximately

1 volt. If your reading is different by more than 0.5
volts, turn the power OFF and check components
R39, R40, R41 and Q9.

If you do not have an RF generator and oscilloscope, skip to Section 4.

GND

TP15