VOICE FREQUENCY ELECTRONICS FOR LOOP APPLICATIONS

[1] NO 2 ESS UNIGAUGE RANGE EXTENSION [J]. IEEE TRANSACTIONS ON COMMUNICATIONS, 1973, CO21 (04) : 271 - 277

[2] THE E6 NEGATIVE IMPEDANCE REPEATER [J]. BELL SYSTEM TECHNICAL JOURNAL, 1960, 39 (06): : 1445 - 1504

[3] FEINER AE, 1967, Patent No. 3339027

[4] LONG-SUBSCRIBER-ROUTE PLANNING AND DESIGN [J]. IEEE TRANSACTIONS ON COMMUNICATION TECHNOLOGY, 1971, CO19 (05): : 687 - &

[5] GRESH PA, 1968, IEEE T COMMUN, V16, P327

[6] HENRY JL, 1972, Patent No. 3671676

[7] HENRY JL, 1970, Patent No. 3508009

[8] HOCHGRAF L, 1955, AIEE COMMUNICATI MAY, P171

[9] HOWE CD, UNPUBLISHED

[10] HUNTLEY HR, 1957, AIEE T COMMUNICA MAR, P54

[1] NO 2 ESS UNIGAUGE RANGE EXTENSION [J]. IEEE TRANSACTIONS ON COMMUNICATIONS, 1973, CO21 (04) : 271 - 277

[2] THE E6 NEGATIVE IMPEDANCE REPEATER [J]. BELL SYSTEM TECHNICAL JOURNAL, 1960, 39 (06): : 1445 - 1504

[3] FEINER AE, 1967, Patent No. 3339027

[4] LONG-SUBSCRIBER-ROUTE PLANNING AND DESIGN [J]. IEEE TRANSACTIONS ON COMMUNICATION TECHNOLOGY, 1971, CO19 (05): : 687 - &

[5] GRESH PA, 1968, IEEE T COMMUN, V16, P327

[6] HENRY JL, 1972, Patent No. 3671676

[7] HENRY JL, 1970, Patent No. 3508009

[8] HOCHGRAF L, 1955, AIEE COMMUNICATI MAY, P171

[9] HOWE CD, UNPUBLISHED

[10] HUNTLEY HR, 1957, AIEE T COMMUNICA MAR, P54