-
GB/T 4770.3-1984 in English
The test methods for 60-channel symmetrical cable carrier telephone equipment
VALID
Issued on:1984-11-28 | Implemented on:1985-10-01
$1,340.00 $1,300.00 -
GB/T 4770.2-1984 in English
The test methods for 12-channel open wire carrier telephone equipment
VALID
Issued on:1984-11-28 | Implemented on:1985-10-01
$1,060.00 $1,029.00 -
GB/T 4770.1-1984 in English
The test methods for 3-channel open wire carrier telephone equipment
VALID
Issued on:1984-11-28 | Implemented on:1985-10-01
$900.00 $873.00 -
-
YD/T 527-1992 in English
Specification for 12-channel transistorized carrier telephone equipment on an agricultural wire
VALID
Issued on:- | Implemented on:1992-11-01
$130.00 $127.00 -
GB 7330-1987 in English
Line traps for A. C. power systems
SUPERSEDED
Issued on:- | Implemented on:1987-10-01
$250.00 $243.00 -
GB 7329-1987 in English
Coupling devices for power line carrier systems
SUPERSEDED
Issued on:- | Implemented on:1987-10-01
$150.00 $146.00 -
GB 7255-1987 in English
Specification for single sideband power-line carrier terminals
SUPERSEDED
Issued on:- | Implemented on:1987-11-01
$160.00 $156.00 -
GB 7435-1987 in English
Sealing tests for pressurized waveguide components and assemblies
SUPERSEDED
Issued on:- | Implemented on:-
$180.00 $175.00
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