Main Unit Circuit Diagram - Yaesu FT-2900R Technical Supplement

4.3 V (4.3 V)
3.3 V
(3.3 V)
4.0 V (4.0 V)
4.9 V (4.9 V)
2.0 V (2.0 V)
3.4 V
(3.4 V)
1.3 V (1.3 V)
0.7 V (0.7 V)
1.2 V
(1.5 V)
4.8 V
(4.8 V) 5.0 V
(5.0 V)
4.6 V
(4.6 V)
0.0 V (0.8 Vp-p)
4.8 V
(4.8 V)
0.0 V (0.0 V)
7.0 Vp-p (0.0 V) WX Alert 1050 Hz
DEV 3 kHz
0.0 V (0.0 V)
0.6 V (0.0 V)
2.2 V (0.0 V)
13.8 V (13.5 V)
8.0 V (8.0 V)
8.0 V (8.0 V)
4.1 V
(4.1 V)
0.0 V
(0.0 V)
5.0 V (5.0 V)
6.2 V (4.5 V)
0.0 V (1.6 V)
0.0 V (5.3 V)
0.6 V (0.6 V)
0.0 V (7.0 V)
7.0 V (0.0 V)
0.7 V
(0.6 V) 0.0 V (1.2 V)
0.6 V (0.0 V) 0.0 V (0.0 V)
2.3 V
(0.0 V)
0.0 V (0.0 V)
4.9 V
(0.0 V)
2.3 V
(0.0 V)
1.8 V (0.0 V)
2.8 V (0.0 V)
5.1 V (0.0 V)
4.5 V
(0.0 V)
1.4 V
(0.0 V)
5.0 V (0.0 V)
2.3 V (2.3 V)
0.9 V (0.0 V)
1.3 V (0.0 V)
0.0 V (0.0 V)
0.35 Vp-p
(0.0 V)
5.0 Vp-p (0.0 V) TONE 100 Hz
DEV 0.7 kHz
6.0 Vp-p (0.0 V) TONE 100 Hz
11.0 Vp-p (0.0 V)
DEV 0.7 kHz
VOL Max
0.0 V (4.0 V)
0.2 Vp-p (0.0 V)
VOL Max
7.0 Vp-p (0.0 V) TONE 100 Hz
DEV 0.7 kHz
0.0 V (0.15 Vp-p)
7.9 V (0.0 V)
0.0 V (2.5 Vp-p)
DCS On MOD Off
7.2 V (8.0 V)
0.1 V (8.0 V)
8.0 V (8.0 V)
7.8 V (7.2 V)
7.8 V (0.0 V)
0.0 V (7.9 V)
7.8 V (7.2 V)
Low 1 : 0.0 V (2.8 V)
Low 2 : 0.0 V (3.0 V)
Low 3 : 0.0 V (3.3 V)
HIGH : 0.0 V (4.0 V)
5.1 V (0.0 V)
2.9 V (2.9 V)
Low 1 : 0.0 V (0.7 V)
Low 2 : 0.0 V (1.0 V)
Low 3 : 0.0 V (1.8 V)
HIGH : 0.0 V (2.9 V)
6.5 V (0.0 V)
0.7 V (0.0 V) 7.6 V
(0.0 V) 1.4 V (0.0 V)
1.0 V (0.0 V)
0.3 V (0.0 V)
2.5 V (0.8 V)
2.5 V (0.3 V)
0.6 V (0.0 V)
0.0 V (0.9 V)
0.0 V (0.0 V)
0.0 V (0.0 V)
0.0 V (0.0 V)
7.4 V
(4.6 V)
0.0 V
(0.0 V)
0.0 V
(0.0 V)
0.0 V (4.9 V)
13.5 V (13.5 V)
3.0 Vp-p (3.0 Vp-p)
0.2 Vp-p (0.0 V)
VOL Max
0.0 V 0.0 V (3.4 V) 0.0 V (0.0 V)
(3.9 V)
0.0 V (0.0 V)
0.0 V (4.5 V)
5.0 V (5.0 V)
0.25 Vp-p
0.0 V (0.45 Vp-p) (0.0 V)
MAIN Unit
Circuit Diagram
0.0 V (1.7 V)
Low 1 : 0.0 V (0.6 V)
Low 2 : 0.0 V (0.9 V)
Low 3 : 0.0 V (1.7 V)
HIGH : 0.0 V (2.9 V)
6.7 V
(0.0 V)
4.8 V
(0.0 V) 1.5 V (0.0 V)
1.1 V
(0.0 V)
2.2 V (0.7 V)
5.4 V
(0.0 V)
1.5 V (0.0 V)
2.6 V
3.1 V
(0.0 V)
(0.0 V)
0.9 V (0.0 V)
2.5 V (0.3 V)
3.2 V (0.0 V)
7.8 V (0.0 V)
0.0 V (2.0 Vp-p)
0.0 V (4.0 Vp-p)
0.0 V (3.0 Vp-p)
1.9 V (1.9 V)
Low 1 : 0.7 V (1.8 V)
Low 2 : 0.7 V (2.1 V)
Low 3 : 0.7 V (2.9 V)
HIGH : 0.7 V (4.0 V)
5.0 V (5.0 V) 0.0 V (1.4 Vp-p) 4.9 V (0.0 V)
4.7 V (4.7 V)
0.0 V
(1.0 Vp-p)
2.4 V (2.4 V)
DIMMER 5
0.0 V
(0.51 Vp-p)
0.0 V (5.0 V)
0.7 V (0.7 V)
0.0 V
0.0 V (0.0 V)
(0.0 V)
4.9 V
0.0 V (0.2 Vp-p) (4.9 V)
TONE 100 Hz ON
MOD Off
4.6 V (4.6 V)
5.0 V (5.0 V)
0.0 V (1.4 Vp-p) 0.0 V (1.5 Vp-p)
TONE 100 Hz ON DCS ON
MOD Off MOD Off RX (TX)
13