Main Unit; Circuit Diagram - Yaesu FT-8900R Technical Supplement

+24.2 dBµ
+10.6 dBµ +10.5 dBµ
0.88 V
+1.8 dBµ
8.70 V
+23.2 dBµ
1.55 V
8.70 V
1.14 V, +20.0 dBµ
+22.5 dBµ
+12.2 dBµ
+0.3 dBµ
0.98 V
8.45 V
+24.0 dBµ
8.47 V
2.27 V
+7.5 dBµ
+8.6 dBµ
+27.5 dBµ
+26.7 dBµ
0 dBµ
0.17 V
-7 dBµ 0.41 V
8.94 V
0.71 V
8.94 V
4.90 V
4.90 V
3.57 V
0.77 V
4.15 V
<12.7 V>
(1.75 V)
[1.92 V]
<13.4 V>{13.2 V}
<13.4 V>
<0.92 V>
<+29.7 dBµ> {+27.1 dBµ}
(+30.6 dBµ) [+31.8 dBµ] <+32.4 dBµ> {+30.0 dBµ}
1.48 V
<4.70 V>
1.64 V
8.70 V 1.08 V, +21.5 dBµ
(4.87 V) [4.87 V]
2.42 V
0.66 V
1.55 V
1.54 V
1.00 V
1.00 V
8.94 V
1.15 V
8.97 V
8.22 V
(+24.0 dBµ)
[+25.3 dBµ]
(3.17 V) <3.49 V>
(2.50 V)
<+30.8 dBµ> (+33.2 dBµ) [+35.1 dBµ]
0.70 V
4.81 V
3.97 V
4.94 V
0.64 V
4.81 V
4.78 V
2.26 V
0.85 V
0.15 V
0.36 V
0.46 V
2.44 V
2.44 V
0.78 V 2.54 V
0.79 V
4.81 V
PK-A:4.70 V
1.95 V
0.20 V
0.64 V
0.78 V
4.81 V
4.78 V
0.20 V
2.09 V
WIDE:2.25 V WIDE:2.25 V
0.61 V 4.55 V
1.20 V
0.69 V
WIDE:1.79 V
4.70 V NARROW:4.66 V
NARROW:2.54
NARROW:2.54
WIDE:1.79 V
WIDE:4.04 V
0.68 V
1.80 V
8.94 V
9.01 V
5.06 V
4.64 V
4.67 V
AFVR-B:0~4.66 V
1.85 V
1.85 V
1.85 V
1.85 V
1.85 V
3.67 V
1.86 V 1.86 V 1.86 V
1.86 V
8.54 V
3.67 V
1.86 V
PK-A:2.35 V PK-A:2.02 V PK-A:2.36 V
PK-B
PK-B:2.28 V
PK-A:0 V, PK-B:4.54 V PK-A:1.49 V
PK-A:1.48 V
0.88 V 1.80 V
0.88 V
0.86 V
0.80 V
0.82 V
0.88 V
0.85 V 0.85 V
1.76 V
0.83 V
0.78 V
0.79 V
0.85 V
1.81 V
1.81 V
1.81 V
1.76 V
1.80 V
1.80 V
9.00 V 9.00 V 9.00 V 9.02 V
9.02 V
9.01 V
9.02 V
8.99 V
8.81 V
5.84 V
5.19 V
8.95 V
5.19 V
5.85 V
5.14 V
5.11 V
5.11 V
5.09 V
5.14 V 5.12 V
5.09 V
POWER ON:4.76 V
POWER ON:4.75 V

MAIN Unit

Circuit Diagram

AFVR-A:0~4.66 V
13.77 V
13.00 V
13.70 V
1.31 V
6.21 V
9.07 V
1.28 V
0.52 V
4.64 V
FAN ON:12.0 V
FAN ON:0.77 V
FAN ON:0.18 V
POWER ON:13.77 V
9.08 V
13.80 V
13.12 V
POWER ON:13.05 V
4.99 V
POWER ON:4.22 V
4.89 V
13.09 V
8.88 V
8.80 V
4.88 V
(xx) = 29.1 V
[xx] = 52.1 V
<xx> = 146.1 V
17