7/8" EIA to N female adapter product photo Front View L
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7/8" EIA to N female adapter


SPINNER adapters offer outstanding electrical and mechanical properties

Adapters are used to connect transmission lines with of different interface sizes (so-called inter-type or between-lines adapter) or within one size but different interface genders (so-called within-type or in-line adapter).

SPINNER high frequency adapters are optimized for quality and performance and are designed for the lowest possible reflection factors. The outstanding electrical and mechanical properties, the simple installation and the high reliability make SPINNER high-frequency adapters one of the most efficient and cost-effective transition connectors on the market. Precision adaptors with RF quality grade 0 are available upon request.

The SPINNER 7/8" EIA to N female adapter ensures optimal performance for signal transmission between transmitter and antenna in broadcast stations.

Outstanding RF characteristics, best possible passive intermodulation and VSWR

A 7/8" EIA to N female adapter enables you to reliably transmit radio-frequency signals in the frequency range from DC to 6 GHz.

The adaptor offers a transition from interface 7/8" EIA to interface N female. The connector has a straight direction.

Coaxial flange connectors, generally known as “EIA flanges”, are connected by a coupling element. The flange connector system complies with international standards EIA STD RS-225, 339 IEC, DIN EN 122150 and MIL-F 24044. The EIA flange connectors are excellently qualified suited for pressurized systems and for outdoor installations. 7/8" EIA connectors are used to link two elements of a rigid or semi-rigid high performance coaxial transmission line for radio frequency signals. Typically, these are operated in systems for very high power transmission (from kW to MW), e.g. in DAB, DVB or FM broadcast systems or in high-energy applications in research facilities (particle accelerator, plasmatron).

The N-coaxial connectors were named after their inventor Paul Neill, who developed this standard for RF connectors in 1942. Often, however, the name also relates to the Navy Connector. Type N connectors can be used at frequencies up to 11 GHz, high-precision types up to 18 GHz. It is typically used in mobile communication applications with demanding mechanical and electrical requirements. SPINNER exclusively manufactures connectors with non-slotted outer conductor contacts and a special sealing profile in the connector head instead of the flat seal disk, specified by IEC or CECC. This ensures the most reliable sealing function.

RF characteristics

Number of interfaces:
Interface type:
7/8" EIA (50 Ω) per IEC 60339-2
N female (50 Ω) per IEC 61169-16
Interface direction:
Mounting type:
Frequency range:
DC to 6 GHz
VSWR, max.:
1.02 @ DC to 1 GHz
1.06 @ 1 GHz to 2.7 GHz
1.08 @ 2.7 GHz to 5 GHz
1.22 @ 5 GHz to 6 GHz

Mechanical characteristics

Inner conductor:
copper-alloy / silver-plated
Outer conductor material / surface:
copper-alloy / silver-plated
Other metal parts material / surface:
copper-alloy / bright nickel-plated
Weight, approx.:
250.0 g
59.1 mm

Further remarks

• excellent electrical performance
(e.g. VSWR ≤ 1.02 / return loss ≥ 40 dB up to
1 GHz - exeption: 6 1/8" adaptor up to 800 MHz)
• for outdoor application
• also short length adaptors available
Customs tariff number:



Product data sheet – 902500 – CB-L-208-DS.pdf