Yaesu FT-277R, Manual

Page: 13 / 34

13
MAIN Unit
FT-277R Technical Supplement
Circuit Diagram
1.73 V
1.13 V
1.29 V
1.83 V
2.15 V
3.18 V
3.18 V
5.12 V
8.13 V
8.05 V
1.91 V
1.29 V
8.00 V
3.75 V
3.72 V
RX: 1.93 V
TX: 1.89 V
RX: 2.45 V
TX: 2.45 V
3.12 V
0.42 V
4.43 V
3.30 V
2.08 V @ Low Freq.
Wide: 5.05 V
Narrow: 0 V
RX: 4.35 V
TX: 5.00 V
RX: 4.95 V
TX: 0 V
RX: 0 V
TX: 4.87 V
Wide: 0 V
Narrow: 5.07 V
RX: 5.07 V
TX: 0 V
0.65 V
4.22 V
RX: 0.40 V
TX: 5.09 V
RX: 4.56 V
TX: 5.00 V
RX: 5.05 V
TX: 0.60 V
RX: 0.64 V
TX: 0 V
RX: 4.86 V
TX: 0 V
2.61 V
2.33 V
2.88 V
5.11 V
4.64 V
2.35 V
0.28 V
0.88 V
5.13 V
2.07 V
2.07 V
9.14 V
3.30 V
3.30 V
5.13 V
3.36 V
2.77 V
3.32 V
1.95 V
1.95 V
1.95 V
1.95 V
5.13 V
1.48 V @CHG (PWR "OFF")
0.91 V @CHG (PWR "OFF")
1.53 V @CHG
13.1 V @CHG
13.8 V
13.5 V
4.90 V
4.86 V
0.99 V
+16.4 dBµ
4.21 V
2.24 V
0.71 V
4.68 V
1.79 V
0.4 V
0.99 V
TX: 1.88 V
TX: 2.62 V
TX "H": 2.10 V
TX "M": 1.60 V
TX "L": 1.10 V
TX "H": 7.85 V
TX "M": 7.90 V
TX "L": 7.92 V
TX "H": 2.21 V
TX "M": 1.28 V
TX "L": 0.49 V
TX "H": 1.95 V
TX "M": 1.15 V
TX "L": 0.46 V
TX: 1.72 V
4.83 V 4.30 V
2.84 V
0.89 V
0.25 V
2.10 V
2.10 V
2.10 V
TUNE 2.06 V
5.13 V
1.95 V
2.26 V
PTT: 1.65 V
MONI: 2.05 V
3.30 V
3.30 V
1.90 V
2.96 V
TX: 2.96 V
3.25 V
TX: 3.25 V
3.28 V
3.19 V
3.26 V
2.14 V 1.06 V
RX: 2.00 V
TX: 0 V
5.57 V
3.95 V
2.73 V
1.97 V
2.62 V
TX: 2.62 V
10.9 V
3.30 V
9.37 V @CHG (PWR "OFF")
TX: 10.5 V
TX: +10.0 dBm @440.00 MHz
TX: -0.3 dBm
RX: –8.4 dBm
TX: –12.4 dBm
+5.0 dBm @392.75 MHz
+11.5 dBµ @47.25 MHz
+12.2 dBµ
+15.2 dBµ @ 440.00 MHz,
SINAD 12 dB
2.10 V @440.00 MHz
EAION
(0V) 5.08 V
EXT DC IN 13.8V