 |
Fernsprechsignal | mit
| Frequenzmodulation
| Mit- | |
| econ. | associate; joint |
| Frequenzmodulation | |
| gen. | frequency modulation |
| commun. | frequency shift keying |
| Fernsprechsignal: 3 phrases in 2 subjects |
| Communications | 1 |
| Electronics | 2 |