GQRP / Kanga Regen construction manual V1.11
Page 7 of 12
Part 3. The Audio Amplifier
Testing
Your circuit should now look like this.
Complete the following tests before moving onto the next stage.
Test
Complete
1
Check over your soldering. Make sure all wires are trimmed,
and no short circuits are present.
q
2
Connect a 9v battery to the battery snap
and connect the
battery lead to the POWER Molex connector on the PCB
q
3
Connect either headphones or a speaker to the PCB
q
4
With a screwdriver touch the middle pin of the Molex
connector marked “VOL”
(F5)
Ensure you can hear a buzz
q
5
Connect VOL connector from front panel and again touch
middle pin.
q
6
Ensure the volume control makes buzz louder & quieter
q
7
Disconnect battery.
q
Move onto Part 4