 |
| |||
| frequency modulation | |||
| frequency shift keying; frequency shift modulation; frequency shift signalling | |||
| modulazione di frequenza: 120 phrases in 10 subjects |
| Antennas and waveguides | 1 |
| Communications | 47 |
| Electronics | 44 |
| Information technology | 10 |
| Medical | 10 |
| Piezoelectric crystals | 2 |
| Radio | 1 |
| Satellite communications | 1 |
| Technology | 2 |
| Telegraphy | 2 |