Introduction
This LEEI-60 experimental apparatus of transmission and reception of electromagnetic waves is designed for teaching electromagnetic oscillation and wave in general physics. It is useful for demonstrating the transmission, reception, modulation, electric resonance, tuning as well as the characteristics of electromagnetic waves. It is an affordable teaching apparatus for physics laboratories at colleges and universities.
Using this apparatus, the following phenonmena can be demonstrated:
1. Transmission of electromagnetic waves
2. Reception of electromagnetic waves
3. Transmitting efficiency of transmitting antenna
4. Resonance and tuning
5. Amplitude modulation, demodulation, and detection
Please click Experiment Contents to find more information about this apparatus.
Specifications
| Item | Specifications |
| High frequency generator | Operating frequency: approximately 230 MHz Output power: approximately 2 W Signal of internal modulation: 1 kHz, off-on, music Signal of external modulation: ≥1 Vpp, input resistance 1 kΩ |
| Receiver Ⅰ | Indicating lamp: 1.5 V, 100 mA Receiving distance: ≥0.5 m |
| Receiver Ⅱ | Sensitivity of meter: 100 µA Receiving distance: ≥3 m |
| Receiver Ⅲ | Speaker: 8 Ω, 0.1 W Indicator: five Receiving distance: ≥8 m Power supply: DC 6 V |
Part List
| Description | Qty |
| High frequency generator | 1 set |
| Receiver Ⅰ (tuned receiver) | 1 set |
| Receiver Ⅱ (receiver of the meter display) | 1 set |
| Receiver Ⅲ (amplifying receiver) | 1 set |
| Instruction manual | 1 |
