Yaesu FT-2800M Technical Supplement - page 13
µCOM Unit /RF Unit Circuit Diagram
13
13.65V
(13.47V)
6.55V
(6.52V)
1.07V
(1.06V)
4.42V
(0V)
4.75V
(0V)
2.45V
(0V)
2.94V
(0V)
7.93V
(0V)
1.98V
(0V)
1.95V
(0V)
1.3V
(0V)
2.09V
(0V)
0.65V
(0V)
0.96V
(0V)
0V
(0V)
5.6V
(0V)
1.24V
(0V)
5.6V
(0V)
4.74V(0V)
5.23V(0V)
0.65V
(0V)
0.72V(0V)
5.23V
(0V)
4.39V
(0V)
5.07V
(0.2V)
5.57V
(0V)
0V
(1.49V)
7.15V
(2V)
0V
(0V)
4.84V
(4.84V)
0V
(0V)
2.55V
(2.55V)
4.4V
(4.4V)
4.18V
(4.38V)
4.89V
(4.89V)
0V(0V)
4.94V
(4.94V)
1.33V
(0.77V)
4.93V
(4.93V)
2.47V
(2.48V)
4.94V
(4.94V)
3.24V
(3.24V)
3.76V
(3.76V)
4.79V
(4.79V)
1.85V
(1.85V)
4.97V
(4.97V)
0V
(0V)
7.2V
(0.4V)
1.5V
(0.2V)
7.2V
(0V)
4.38V
(0V)
0V
(4.11V)
7.25V
(0V)
0V
(7.22V)
1.51V
(0V)
0V
(7.26V)
7.94V
(7.94V)
7.98V
(7.98V)
7.26V
(7.26V)
5.1V
(0V)
5.1V
(0V)
0.71V
(0V)
7.41V
(0V)
7.33V
(0V)
0V
(0V)
pin1:0V(4.96V)
pin2:4.93V(4.93V)
pin3:0V(0V)
pin4:13.78V(13.78V)
pin5:4.95V(4395V)
pin6:1.99V(2V)
pin7:0.1V(0.1V)
pin8:7.97V(7.97V)
pin9:0V(0V)
pin10:0V(0V)
pin11:0V(0V)
pin12:0V(2.46V)
5.03V
(5.03V)
4.99V
(1.2V)
J110
pin1:4.99V(4.99V)
pin2:4.99V(4.99V)
pin3:7.96V(7.96V)
pin4:0V(0V)
pin5:0V(0V)
pin6:4.99V(1V)
7.97V
(7.97V)
6.9V
(6.9V)
5.04V
(5.04V)
0V
(0V)
13V
(13V)
0V
(0V)
5.03V
(5.03V)
2.74V
(2.74V)
0.89V
(0.89V)
CLK SHT
ON:0V(0V)
0FF:4.99V(4.99V)
4.93V
(4.93V)
0V
(0V)
0.1V
(0.1V)
4.99V
(4.99V)
0V
(0V)
(DTMF ON 2.46V)
0V
(0V)
5.03V
(5.03V)
5.03V
(5.03V)
5.03V
(5.03V)
2.34V
(2.34V)
2.38V
(2.38V)
5.03V
(5.03V)
0V
(0V)
4.99V
(4.99V)
5.03V
(5.03V)
5.03V
(5.03V)
0V
(0V)
(DCS ON 2.3V)
4.89V
(4.89V)
3.26V
(3.26V)
1.64V
(1.64V)
0V
(0V)
5.03V
(5.03V)
0V
(0V)
0V
(0V)
4.99V
(4.99V)
DIMR
OFF:4.01V(4.01V)
1:2.52V(2.52V)
2:2.2V(2.2V)
3:1.96V(1.96V)
DIMR
OFF:0V(0V)
1:0.67V(0.67V)
2:0.89V(0.89V)
3:1.2V(1.2V)
DIMR
OFF:0V(0V)
1:0.02V(0.02V)
2:0.21V(0.21V)
3:0.5V(0.5V)
DIMR
OFF:0V(0V)
1:0.67V(0.67V)
2:0.89V(0.89V)
3:1.2V(1.2V)
DIMR
OFF:0V(0V)
1:0.02V(0.02V)
2:0.22V(0.22V)
3:0.5V(0.5V)
DIMR
OFF:3.88V(3.88V)
1:2.54V(2.54V)
2:2.17V(2.17V)
3:1.91V(1.91V)
4.87V
(4.87V)
5.03V
(5.03V)
5.03V
(5.03V)
4.76V
(4.76V)
4.76V
(4.76V)
4.76V
(4.76V)
4.76V
(4.76V)
0V
(0.2V)
0V
(0.7V)
5.03V
(5.03V)
1.83V
(1.83V)
2.03V
(2.03V)
4.95V
(4.95V)
2.02V
(2.02V)
2.03V
(2.03V)
2.02V
(2.02V)
2.03V
(2.03V)
WALT
ON:0V(0v)
OFF:4.99V(4.99V)
0V
(0V)
0V
(4.97V)
5V
(5V)
5.03V
(5.03V)
5.03V
(5.03V)
0V
(0V)
5.03V
(5.03V)
CLK SHT
ON:0V(0V)
OFF:4.99V(4.99V)
DCS/TSQ
ON:0V(0V)
OFF:5.03V(5.03V)
DCS/Tone freq.<150Hz:4.96V(4.96V)
DCS/Tone freq.>150Hz:0V(0V)
5.03V
(5.03V)
4.99V
(4.99V)
0V
(0V)
SQL
ON:5.03V(5.03V)
OFF:0V(0V)
DCS/Tone freq.<150Hz:0V(0V)
DCS/Tone freq.>150Hz:0.1V(0.1V)
2.03V
(2.03V)
1.84V
(1.84V)
1.98V
(1.98V)
0.14V
(0.14V)
2.1V
(2.1V)
2.07V
(2.07V)
2.03V
(2.03V)
2.03V
(2.03V)
2.02V
(2.02V)
1.87V
(1.87V)
4.95V
(4.95V)
0V
(0V)
DCS/Tone freq.<150Hz:0V(0V)
DCS/Tone freq.>150Hz:0.3V(0.3V)
DCS/TSQ
ON:0V(0V)
OFF:4.99V(4.99V)
0V
(0V)
0V
(0V)
pin1:0V(0V)
pin2:0V(0V)
pin3:0V(0V)
pin5:5.01V(5.01V)
pin6:1.3V(0V)
pin8:0V(0V)
pin9:5V(5V)
pin10:0V(0V)
pin11:5.03V(5.03V)
pin12:0V(0V)
RX(TX)
RX Frequency:146.1MHz
TX Frequency:146MHz
(Power Output 5W)
pin 12
pin 13
pin 14
OFF
0V(0V)
0V(0V)
0V(0V)
1
0V(0V)
0V(0V)
4.98V(4.98V)
2
0V(0V)
4.97V(4.97V)
0V(0V)
3
4.97V(4.97V)
0V(0V)
0V(0V)
DIMR
Q106
Q319
pin1:0V(3.98V)
pin2:4.38V(4.34V)
pin3:1.95V(1.96V)
pin4:0V(0V)
pin5:4.94V(4.94V)
pin6:0V(0.39V)
pin7:0.56V(0V)
pin8:4.94V(3.32V)
pin9:0V(0V)
pin10:4.38V(4.38V)
pin11:4.38V(0.28V)
pin12:0V(0V)
pin13:0V(0V)
pin15:0V(0.18V)
pin16:0V(0V)
pin17:4.94V(4.72V)
pin18:4.38V(4.38V)
pin19:4.91V(4.91V)
pin20:0V(0V)
pin21:0V(0V)
pin22:1.98V(1.98V)
pin23:4.38V(4.23V)
pin24:4.36V(4.36V)
5.37V
(5.28V)
6.65V
(6.65V)
6.92V
(0V)
0.74V
(0.29V)
0V
(6.98V)
0V
(1.29V)
0V
(1.79V)
0V
(2.24V)
0V
(1.41V)
1.47V
(0V)
1.51V
(0V)
1.86V
(0V)
7.21V
(0V)
0.71V
(0V)
4.52V
(5V)
1.82V
(1.82V)
1.82V
(1.82V)
5.42V
(0V)
7.15V
(0V)
5.3V
(0V)
0V
(3.2V)
0.36V
(0V)
7.58V
(0V)
3.88V
(0V)
0V
(0V)
1.82V
(1.82V)
0V
(0V)
0V
(2.5V)
HI(65W):13.79V(13.23V)
M(25W):13.79V(13.49V)
L2(10W):13.79V(13.58V)
L1(5W):13.79V(13.55V)
HI(65W):13.79V(13.31V)
M(25W):13.79V(13.56V)
L2(10W):13.79V(13.74V)
L1(5W):13.79V(13.66V)
HI(65W):13.79V(13.31V)
M(25W):13.79V(13.52V)
L2(10W):13.79V(14.16V)
L1(5W):13.79V(13.79V)
HI(65W):0V(7.89V)
M(25W):0V(7.9V)
L2(10W):0V(7.9V)
L1(5W):0V(7.9V)
HI(65W):0V(2.99V)
M(25W):0V(2.44V)
L2(10W):0V(1.6V)
L1(5W):0V(1.25V)
HI(65W):0V(2.43V)
M(25W):0V(2.04V)
L2(10W):0V(1.11V)
L1(5W):0V(0.76V)
HI(65W):0V(2.65V)
M(25W):0V(0.37V)
L2(10W):0V(0.35V)
L1(5W):0V(0.35V)
HI(65W):0V(1.26V)
M(25W):0V(7.39V)
L2(10W):0V(7.40V)
L1(5W):0V(7.42V)
HI(65W):0V(7.24V)
M(25W):0V(7.47V)
L2(10W):0V(7.56V)
L1(5W):0V(7.81V)
HI(65W):0V(7.89V)
M(25W):0V(4.21V)
L2(10W):0V(3.23V)
L1(5W):0V(2.82V)
1.86V
(1.87V)
1.95V
(2.51V)
1.93V
(2.53V)
1.94V
(2.47V)
4.95V
(4.95V)
0V
(1.96V)
3.29V
(3.29V)
1.93V
(1.93V)
1.95V(1.95V)
Q319 pin 14
HI(65W):0.64V(3.77V)
M(25W):0.64V(1.75V)
L2(10W):0.64V(1.1V)
L1(5W):0.64V(0.96V)
4.4V
(0V)
4.95V
(4.95V)
7.98V
(7.98V)
13.66V
(13.48V)
13.07V
(12.94V)
13.75V
(13.62V)
13.8V
0V
(0V)
4.18V(4.18V)
7.98V
(7.24V)
7.97V
(0V)
0V
(4.97V)
0V
(7.96V)
7.29V
(7.27V)
7.95V
(0V)