Tc-700 Level Diagram - HYT TC-700 Service Manual

Rx Section
-120dBm
ANT
LPF BPF
C135
Each of the levels plotted from RF to the first IF is the level that can provide a 12dB SINAD for an SSG signal through a 470pFb coupling capacitor.
When AF ouput is adjusted to 1W, adjust the frequency deviation of 1KHz AF level to 3KHz (Wide), 1.5KHz (Narrow).
Transmit
12mVrms 150mVrms
60mVrms
IC408
C307
IC402
MIC
D305
AMP
AF VTVM
AF and RF levels are measured at high impedance.

TC-700 Level Diagram

TC 700 Level Diagram
-109dBm
-113dBm -120dBm
C251
BPF IC202
C254 Q207
C312 C241
1st Local
0dBm
RF center
0.15Vrms
C312
C312
Q304 Q111
Q302
-101dBm -103dBm -105dBm
C236 C238
XF203 IC204
Q206 C230 Q204
2nd Local
-7dBm
IF 49.95MHz
0.44Vrms 0.8Vrms
C101
C105
Q101
Q102
RF VTVM
70
130mVrms 1W
250mVrms 300mVrms 100mVrms
IC408 IC202
IC404
C487
AMP
K501
AF VTVM
0.62Vrms
C111 C117 D102
Q103 Q104
SP
4W
ANT
LPF