Kenwood TM-271A Service Manual page 45

450kHz
W : –85.0dBm
N : –84.5dBm
CF1
W/N
/CF2
0.33Vrms
IC301 IC251
9
11
vel meter.
12dB SINAD.)
To make measurements in the AF section, connect the AC level meter.
(ANT input : –53dBm, 1kHz FM, 3kHz DEV (Wide)/1.5kHz DEV (Narrow))
The AF output level is adjusted for a 0.64V/8Ω by the front panel AF VOL control.
TX-RX Unit (VCO)
–5.3dBm –10dBm
IC402
Q406 Q410
2
To make measurements in the RF section, connect the RF Wattmeter (50Ω).
LEVEL DIAGRAM
W/N W/N
0.32Vrms 0.26Vrms
IC251 IC251
8 12 14 3 1
TX-RX Unit
–4.8dBm
D409
Q411
1
Audio Frequency
W/N W/N
0.30Vrms 0.31Vrms
IC251
Q251
5 7
–8.8dBm 12.5dBm 26.5dBm
Q503
Q501 Q502
G
TM-271A/271E
W/N W/N W/N
10mVrms 0.50Vrms 0.64Vrms
IC161 IC252
12
11 10 1
FINAL Amp TX-RX Unit
Q504
D D
D602
S G S
J1
60W
ANT
41