共 50 条
- [1] A WIDEBAND MULTI-CHANNEL VOICE-FREQUENCY TELEGRAPH SYSTEM POST OFFICE ELECTRICAL ENGINEERS JOURNAL, 1967, 60 : 10 - &
- [3] A VOICE-FREQUENCY BYPASSING FILTER FOR CARRIER REPEATERS NTZ-COMMUNICATIONS JOURNAL, 1965, 4 (03): : 112 - &
- [4] DEVELOPMENTS IN FREQUENCY-SHIFT VOICE-FREQUENCY TELEGRAPH EQUIPMENT POST OFFICE ELECTRICAL ENGINEERS JOURNAL, 1979, 72 (OCT): : 191 - 196
- [5] INTELLIGIBLE CROSSTALK PERFORMANCE OF VOICE-FREQUENCY CUSTOMER LOOPS BELL SYSTEM TECHNICAL JOURNAL, 1978, 57 (08): : 3001 - 3029
- [6] THE INFLUENCE OF SIGNAL IMITATION ON THE RECEPTION OF VOICE-FREQUENCY SIGNALS PROCEEDINGS OF THE INSTITUTION OF ELECTRICAL ENGINEERS-LONDON, 1949, 96 (41): : 223 - 235
- [7] PUSHBUTTON CALLING WITH A 2-GROUP VOICE-FREQUENCY CODE BELL SYSTEM TECHNICAL JOURNAL, 1960, 39 (01): : 235 - 255
- [8] TRACER - VOICE-FREQUENCY RELAY SYSTEM FOR RADIO NAVIGATION AIDS RADIO AND ELECTRONIC ENGINEER, 1975, 45 (06): : 299 - 307
- [9] DEVELOPMENTS IN FREQUENCY-SHIFT VOICE-FREQUENCY TELEGRAPH EQUIPMENT. Post Office Electrical Engineers Journal, 1979, 72 (pt 3): : 191 - 196