Main Unit Circuit Diagram (Lot. 1~4) - Vertex Standard VX-350 Series Service Manual

RX: 0 V
TX: 1.3 V
–9 dBμ
7.4 V
7.4 V
PTT "ON": 0 V
PTT "OFF": 3.3 V
RX: 7.4 V
TX: 6.3 V
4.5 V
5.0 V
1.8 V
BUSY: 7.4 V
MUTE: 0 V
4.0 Vp-p @500 mW
BUSY: 3.4 V
MUTE: 0 V
VX-350 Series VHF Band Service Manual
RX: 2.4 V
TX: 0 V
–11 dBμ
TX 5W: 3.9 V RX: 0 V
TX: 3.5 V
TX 5W: 1.8 V
RX: 0 V
TX 5W: 3.9 V TX: 0.3 V
RX: 2.5 V
TX: 0.6 V
1.3 V
7.4 V
1.1 V
+1 dBμ
RX: 0.8 V
TX: 0.9 V
RX: 2.8 V
2.6 V
TX: 2.8 V
0.7 V
SAVE "ON": 0 V
SAVE "OFF": 3.5 V
NORMAL TEMP.: 2.6 V
SAVE "ON": 3.5 V
SAVE "OFF": 0 V
6.7 V 3.5 V
4.3 V
RX: 2.8 V
TX: 2.5 V
3.5 V
RX: 2.4 V
TX: 2.7 V
5.0 V
7.4 V
6.8 V
RX: 2.4 V
TX: 0 V +8 dBμ
–4 dBμ
RX: 0.7 V
TX: 0 V
5.0 V
4.2 V
RX: 3.9 V
TX: 4.2 V
5.0 V
RX: 4.2 V
TX: 3.8 V
RX: 3.0 V
2.8 V
TX: 2.7 V
0.8 V
RX: 0 V
TX: 5.0 V
RX: 0 V
TX: 3.5 V
RX: 0 V
TX: 3.4 V
RX: 3.4 V
TX: 0 V
RX: 3.3 V
TX: 0 V
LAMP "ON": 2.6 V
LAMP "OFF": 0 V
MAIN Unit (Lot. 1~4)
Circuit Diagram
RX: 1.6 V
RX: 0.6 V TX: 1.4 V
TX: 0.6 V
WIDE: 2.9 V
NARROW: 0 V
0.5 V
LOCK: 3.5 V
UNLOCK: 0 V
14