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  • H04B3/00
    		•  Line transmission systems (combined with near-field transmission systems H04B 5/00) HB CC 5K046
  • H04B3/02
    		•  .Details HB CC 5K046
  • H04B3/03
    		•  ..Hybrid circuits (for transceivers H04B 1/52, H04B 1/58) [3] HB CC 5K046
  • H04B3/03@A
    		•  Transformer type HB CC 5K046
  • H04B3/03@B
    		•  Resistor type HB CC 5K046
  • H04B3/03@Z
    		•  Others HB CC 5K046
  • H04B3/04
    		•  ..Control of transmission; Equalising HB CC 5K046
  • H04B3/04@A
    		•  Equalisation HB CC 5K046
  • H04B3/04@C
    		•  .Pre-equalisation HB CC 5K046
  • H04B3/04@D
    		•  .using pulse reshaping HB CC 5K046
  • H04B3/04@B
    		•  AGC HB CC 5K046
  • H04B3/04@Z
    		•  Others HB CC 5K046
  • H04B3/06
    		•  ...by the transmitted signal HB CC 5K046
  • H04B3/06@A
    		•  Equalisation HB CC 5K046
  • H04B3/06@C
    		•  .Transversal type automatic equalisation HB CC 5K046
  • H04B3/06@D
    		•  .Automatic equalisation of non-linear distortion HB CC 5K046
  • H04B3/06@E
    		•  .using for the AC system HB CC 5K046
  • H04B3/06@B
    		•  AGC HB CC 5K046
  • H04B3/06@Z
    		•  Others HB CC 5K046
  • H04B3/08
    		•  ....in negative-feedback path of line amplifier HB CC 5K046
  • H04B3/10
    		•  ...by pilot signal HB CC 5K046
  • H04B3/10@A
    		•  Equalisation HB CC 5K046
  • H04B3/10@C
    		•  .using the training signal HB CC 5K046
  • H04B3/10@B
    		•  AGC HB CC 5K046
  • H04B3/10@Z
    		•  Others HB CC 5K046
  • H04B3/11
    		•  ....using pilot wire (H04B 3/12 take precedence) [3] HB CC 5K046
  • H04B3/11@A
    		•  Equalisation HB CC 5K046
  • H04B3/11@B
    		•  AGC HB CC 5K046
  • H04B3/11@Z
    		•  Others HB CC 5K046
  • H04B3/12
    		•  ....in negative-feedback path of line amplifier HB CC 5K046
  • H04B3/14
    		•  ...characterised by the equalising network used HB CC 5K046
  • H04B3/16
    		•  ...characterised by the negative-impedance network used HB CC 5K046
  • H04B3/18
    		•  ....wherein the network comprises semiconductor devices HB CC 5K046
  • H04B3/20
    		•  ..Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other HB CC 5K046
  • H04B3/21
    		•  ...using a set of bandfilters [3] HB CC 5K046
  • H04B3/23
    		•  ...using a replica of transmitted signal in the time domain, e.g. echo cancellers [3] HB CC 5K046
  • H04B3/26
    		•  ..Improving frequency characteristic by the use of loading coils HB CC 5K046
  • H04B3/28
    		•  ..Reducing interference caused by currents induced in cable sheathing or armouring HB CC 5K046
  • H04B3/30
    		•  ..Reducing interference caused by unbalanced currents in a normally balanced line [2006.01] HB CC 5K046
  • H04B3/32
    		•  ..Reducing cross-talk, e.g. by compensating HB CC 5K046
  • H04B3/34
    		•  ...by systematic interconnection of lengths of cable during laying; by addition of balancing components to cable during laying HB CC 5K046
  • H04B3/36
    		•  ..Repeater circuits () HB CC 5K046
  • H04B3/38
    		•  ...for signals in two different frequency ranges transmitted in opposite directions over the same transmission path HB CC 5K046
  • H04B3/40
    		•  ..Artificial lines; Networks simulating a line of certain length HB CC 5K046
  • H04B3/42
    		•  ..Circuits for by-passing of ringing signals HB CC 5K046
  • H04B3/44
    		•  ..Arrangements for feeding power to a repeater along the transmission line HB CC 5K046
  • H04B3/46
    		•  ..Monitoring; Testing [1, 2015.01] HB CC 5K042
  • H04B3/462
    		•  ...Testing group delay or phase shift, e.g. timing jitter [2015.01] HB CC 5K042
  • H04B3/466
    		•  ....Testing attenuation in combination with at least one of group delay and phase shift [2015.01] HB CC 5K042
  • H04B3/48
    		•  ...Testing attenuation (H04B3/466 takes precedence) [1, 2015.01] HB CC 5K042
  • H04B3/487
    		•  ...Testing crosstalk effects [2015.01] HB CC 5K042
  • H04B3/493
    		•  ...Testing echo effects or singing [2015.01] HB CC 5K042
  • H04B3/50
    		•  .Systems for transmission between fixed stations via two-conductor transmission lines (H04B 3/54 takes precedence) HB CC 5K046
  • H04B3/52
    		•  .Systems for transmission between fixed stations via waveguides HB CC 5K046
  • H04B3/54
    		•  .Systems for transmission via power distribution lines (in alarm signalling systems G08B 25/06) HB CC 5K046
  • H04B3/56
    		•  ..Circuits for coupling, blocking, or by-passing of signals HB CC 5K046
  • H04B3/58
    		•  ..Repeater circuits HB CC 5K046
  • H04B3/60
    		•  .Systems for communication between relatively movable stations, e.g. for communication with lift (H04B 3/54 takes precedence) HB CC 5K046
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