KENWOOD TK2107
Instrukcja Serwisowa

RX section

-116dBm -112.5dBm -100dBm -103.5dBm -107dBm -105dBm 113mVrms 185mVrms 23.5mVrms 0.63Vrms

5R

SP
ANT

Q307 R211 XF200
16 9 5 7 4 10

IC300 IC302 L114 Q203 IC200 Q202 Q201 C137 R224 R217 C212 R210 1st Local 0.1Vrms

L208, L209, L203, AF VR L210 L214

RF center IF 38.85MHz AF 1kHz

Modulate the AF level with a frequency 1kHz and deviation of 1.5kHz SG output level for obtaining 12dB / SINAD when injected to each point (Narrow), 3kHz (Wide). Then take from the signal generator through a 470pF coupling capacitor. output when set to -53dBm and obtain the level shown on an AF VTVM Measure the 1st Local level on a RF VTVM. when output has been adjusted to 0.63Vrms with the AF vol.

TX section

LEVEL DIAGRAM

12mVrms 390mVrms 120mVrms 0.16Vrms 0.17Vrms 0.53Vrms 0.62Vrms

MIC IC500 C34 Q105 ANT Q4 Q100 Q101 C100 Q6 C44

Q102

9.0W

C104

2 1 6 7

VR501 D5

C109 C114 C116

AF RF VTVM

Measure the audio an AF VTVM and radio frequency on a RF VTVM at high impedance. Set MIC input obtain a moduration factor of 60% with the transmit at center and a modulation frequency of 1kHz.

TK-2107

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