Figure 22 Typical Circuit Voltages - ozQRP MDT Construction Manual

Location
Q1 collector
Note 1
Q1 emitter
Note 2
Q2 collector
Q2 emitter
Note 2
Q3 collector
Q3 emitter
Q4 collector
Q4 emitter
Q5/Q6 collector
Q5/Q6 base
Note 3
Q5/Q6 emitter
Note 3
Q7 collector
Q7 emitter
Q8 collector
Q8 emitter
U1.A pin 8
U1.A pin 3
U1.A pin 1
U1.B pin 7
U2 pin 6
U2 pin 5
Notes:
1. Zener tolerance +- 5%.
2. DC measurement approximate. Oscillator running.
3. No RF drive.
Readings taken with a digital multimeter.
Power supply voltage set at 13.8V DC.
MDT Construction Manual – Issue 2
V DC Receive V DC Transmit
9.1
4.8
12
6.7
8.4
0.8
0
0
13.8
0
0
0
0
0
0
11.1
5.5
5.4
5.4
13.5
6.6

Figure 22 Typical circuit voltages.

RF pk-pk @ 1.5W
output
9.1
4.8
12
6.7
0
0
12.9
1.6
13.6
0.6
0.02
4.8
0.6
6.3
0.45
0
0
0
0
0
0
-
9
-
5.2
-
-
3.1
-
40
-
-
-
-
-
-
-
-
-
-
-
-
Page 39