Modification
Tape recorder output on LEF master station allowing conversation from both sides to be recorded.
This modification provides a 10K Ω output to a separate device. Make sure external device has 10K Ω audio input.
Difficulty Level
5 – Hard – circuit creation and internal addition.
Components Required
- Resistors:
- Two 10K Ω, 0.25 W
- One 10~15K variable resistor
- Capacitor:
- Two Aiphone model NP-25V (33 µfd, 25V, non-polarized)
Instructions
- Install components as shown on the following schematic.
- This modification will allow a tape recorder to record both sides of the conversation while the master is communicating with another station.
LEF-3
Add components as shown above, connected from pin 6 of IC2. Connect GND of input to recorder to E of LEF Series master station.
LEF-5
Add components as shown above, connected from pin 6 of IC2. Connect GND of input to recorder to E of LEF Series master station.
LEF-10
Add components as shown above, connected from pin 6 of IC2. Connect GND of input to recorder to E of LEF Series master station.