874-L20

The General Radio 874-L20 is a 20 cm air-dielectric coax line with GR-874 connectors on both ends. It was introduced in Catalog M (1951) and remained available through Template:Catalog 73, after which only the 874-L20L version with locking connectors remained in the catalog.

General Radio 874-L20

20cm airline

Available from 1951 to 1973

Manuals

Catalog History

Document	Year	Page
Catalog M	1951	119
Catalog N	1954	131
Catalog O	1956	54
Catalog P	1959	51
Catalog Q	1961	46
Catalog R	1963	71
Catalog S	1965	90
Catalog T	1968	141
Catalog U	1970	157
Catalog73	1973	247

(All manuals in PDF format unless noted otherwise)

Specifications

Frequency: DC to 7 GHz (9 GHz if connectors are locked)
Electrical length: 20.096 ±0.06 cm
Delay: 0.6706 ±0.0018 ns
Impedance: 50 Ω
Voltage: ≤1.5 kV peak
Power: ≤40 kW DC-50 kHz, decreasing with f^-½ to 100 W at 10 GHz

874-L20

Specifications

Photos