Level Diagram - Kenwood TM-V708A Service Manual

TM-V708A
Transmitter Section
1.6V
2.5mV
MIC
IC801
PKD
(data communications)
Note1: Set the AG so that the microphone socket input is 3kHz
deviation at 1kHz modulation.
The data communication connector input level is 3kHz
deviation at 1kHz modulation for 1200bps and 2kHz
deviation at 1kHz modulation for 9600bps.
Receiver Section
360mV
VHF
IF IC
IC100
AF
AF
360mV
UHF
IF IC
IC400
Note1: The 12dB SINAD levels were plotted using a standard signal
generator through a 0.01µF ceramic capacitor at each point
from the RF to the first IF.
70

LEVEL DIAGRAM

0.63V 0.53V
Q801 Q802
IC804
1200bps
80mV
9600bps
UHF
VCO
IC302
-101dBm
Q112
38.85MHz
45.05MHz
-98dBm
Q406
80mV 0dBm +10dBm
VHF
VCO
Q6
IC2
-2dBm -1dBm +14dBm
Q304 Q307
Note2: The transmit frequency is 145.0 or 435.0MHz.
Note3: The HI/MID/LOW switch is set to HI.
Note4: The measurements with the power meter, except for the
ANT connector, are the values with the APC off.
-109dBm
-106dBm
Q200
-105dBm
Q201
-108dBm
-106dBm
Q501
-105dBm
Q502
Note2: The AF levels were measured with an AF voltmeter when
the -73dBm (50µV) standard signal generator signal
modulated by a 1kHz modulation frequency and a 3kHz
deviation was received and the AF output was adjusted to
0.63V/8Ω by the AF VR.
MODULE
+19dBm +25dBm
Q8 Q9
MODULE
+21dBm +26dBm
Q309 Q310
-100dBm
Q202 Q205
Q507
-103dBm
Q203
Q508
Q505
ANT
MAIN VHF
SUB VHF
SUB UHF
MAIN UHF