Interface
Impedance, frequency, cable type and signal requirements.
← All connector familiesDEPTHLINK / SUBSEA CONNECTIVITY
Coax connectors.
Discuss coaxial connections as part of a complete cable and equipment interface.
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DEFINE YOUR CONFIGURATION
Build the specification around your equipment.
Impedance, frequency range and signal-path requirements.
Assembly
Cable length, end termination, materials and installation conditions.
Project
Required quantity, delivery date, inspection and documentation.
Final specifications, availability and any compatibility with an existing connector are confirmed during quotation.
SERIES OVERVIEW & CAPABILITIES
Understand the configuration.
Coaxial signal connections offered at 50 or 75 Ω, either coax-only or with six additional electrical contacts.
SubConn technical reference
The figures below describe the referenced SubConn configurations, not verified DepthLink alternatives. Final supplied specifications and mating compatibility are confirmed with your quotation. Qualified pressure-test values are shown as published and are not automatically working-depth ratings.
Technical information reviewed 19 September 2026Impedance50 Ω or 75 Ω
Recommended frequencyUp to 3 GHz
MatingDry mating only
Pressure test600 bar, mated
Typical applications
- Video links
- Telemetry
- RF and antenna interfaces
Selection notes
Not suitable for open-face pressure or waterblock applications. Locking sleeves are required. Published attenuation describes a 10 m cable assembly including two bulkheads, not the connector alone. Minimum inline cable bend radius: 100 mm; keep grease off the coax interface.
Specifications by configuration
Expand a group for electrical and environmental limits, construction, wiring. Open the product specification to build your requirements.
HF Coax - 50 ohm CoaxTechnical details +
Electrical & environmental
| Voltage rating on coax insert only | 800 V, max nominal voltage |
|---|---|
| Frequency* | 0.3 GHz / 0.6 GHz / 0.9 GHz / 1.2 GHz / 1.5 GHz / 1.8 GHz / 2.1 GHz / 2.4 GHz / 2.7 GHz / 3.0 GHz |
| Attenuation* | 5.0 dB / 7.7 dB / 9.9 dB / 11.6 dB / 13.4 dB / 15.3 dB / 17.3 dB / 19.3 dB / 21 dB / 22.5 dB |
| Recommended max frequency | 3.0 GHz |
| Insulation resistance | > 200 MΩ |
| Contact resistance | < 0.01 Ω |
| Temperature rating (water) | - 4 to 60˚C, 25 to 140˚F |
| Temperature rating (air) | - 40 to 60˚C, - 40 to 140˚F |
| Storage temperature rating | - 40 to 60˚C, - 40 to 140˚F |
| Qualified pressure tested | 600 bar, 8,700 psi (mated) |
Materials, cables & terminations
| Connector body | Chloroprene rubber |
|---|---|
| Bulkhead body | Brass, stainless steel, titanium or anodised aluminium |
| Bulkhead body (RA) | Brass, stainless steel, titanium or anodised aluminium |
| Coax contacts | Gold plated contacts |
| O-rings | Nitrile |
| Locking sleeves | POM or stainless steel |
| Locking sleeves (RA) | RADLSA-M (black POM) |
| Snap rings | Stainless steel AISI 302 |
| Inline cable (2 ft, 60 cm) | PUR jacket cable with RG58 coax |
| Coax bulkhead leads (3.3 ft, 100 cm) | RG316 coax |
Frequency and attenuation values refer to a 10 m assembly with two bulkheads. Dry mate only; not for open-face pressure or waterblock use. Locking sleeves required.
HF Coax - 50 ohm Coax/ElectricTechnical details +
Electrical & environmental
| Voltage rating on electric contacts | 300 V DC/AC rms |
|---|---|
| Current rating on electric contacts | 5 A per contact (max 20 A per connector) |
| Voltage rating on coax | 800 V, max nominal voltage |
| Frequency* | 0.3 GHz / 0.6 GHz / 0.9 GHz / 1.2 GHz / 1.5 GHz / 1.8 GHz / 2.1 GHz / 2.4 GHz / 2.7 GHz / 3.0 GHz |
| Attenuation* | 5.0 dB / 7.7 dB / 9.9 dB / 11.6 dB / 13.4 dB / 15.3 dB / 17.3 dB / 19.3 dB / 21 dB / 22.5 dB |
| Recommended max frequency | 3.0 GHz |
| Insulation resistance | > 200 MΩ |
| Contact resistance | < 0.01 Ω |
| Temperature rating (water) | - 4 to 60˚C, 25 to 140˚F |
| Temperature rating (air) | - 40 to 60˚C, - 40 to 140˚F |
| Storage temperature rating | - 40 to 60˚C, - 40 to 140˚F |
| Qualified pressure tested | 600 bar, 8,700 psi (mated) |
Materials, cables & terminations
| Connector body | Chloroprene rubber |
|---|---|
| Bulkhead body | Brass, stainless steel, titanium or anodised aluminium |
| Bulkhead body (RA) | Brass, stainless steel, titanium or anodised aluminium |
| Power contacts | Female sockets in gold plated brass UNS - C36000, Male contacts in gold plated beryllium copper |
| Coax contacts | Gold plated contacts |
| O-rings | Nitrile |
| Locking sleeves | POM or stainless steel |
| Locking sleeves (RA) | RADLSA-M (black POM) |
| Snap rings | Stainless steel AISI 302 |
| Inline cable (2 ft, 60 cm) | RG58 coax and 6 x 20 AWG, 0.52 mm2 conductors |
| Coax and 6-contact bulkhead leads (3.3 ft, 100 cm) | RG316 coax and 6 x 20 AWG, 0.52 mm2 coloured PTFE |
Wiring reference
Confirm the exact part’s drawing and contact numbering before wiring.
Inline cable colour code
- 1: Black
- 2: White
- 3: Red
- 4: Green
- 5: Orange
- 6: Blue
Frequency and attenuation values refer to a 10 m assembly with two bulkheads. Dry mate only; not for open-face pressure or waterblock use. Locking sleeves required.
HF Coax - 75 ohm CoaxTechnical details +
Electrical & environmental
| Voltage rating on coax insert only | 600 V, max nominal voltage |
|---|---|
| Frequency* | 0.9 GHz / 1.2 GHz / 1.5 GHz / 1.8 GHz / 2.1 GHz / 2.4 GHz / 2.7 GHz / 3.0 GHz |
| Attenuation* | 6.3 dB / 7.4 dB / 8.6 dB / 9.9 dB / 11.3 dB / 12.8 dB / 14.5 dB / 15.7 dB |
| Recommended max frequency | 3.0 GHz |
| Insulation resistance | > 200 MΩ |
| Contact resistance | < 0.01 Ω |
| Temperature rating (water) | - 4 to 60˚C, 25 to 140˚F |
| Temperature rating (air) | - 40 to 60˚C, - 40 to 140˚F |
| Storage temperature rating | - 40 to 60˚C, - 40 to 140˚F |
| Qualified pressure tested | 600 bar, 8,700 psi (mated) |
Materials, cables & terminations
| Connector body | Chloroprene rubber |
|---|---|
| Bulkhead body | Brass, stainless steel, titanium or anodised aluminium |
| Bulkhead body (RA) | Brass, stainless steel, titanium or anodised aluminium |
| Coax contacts | Gold plated contacts |
| O-rings | Nitrile |
| Locking sleeves | POM or stainless steel |
| Locking sleeves (RA) | RADLSA-M (black POM) |
| Snap rings | Stainless steel AISI 302 |
| Inline cable (2 ft, 60 cm) | PUR jacket cable with Mini-RG59 coax |
| Coax bulkhead leads (3.3 ft, 100 cm) | RG179 coax |
Frequency and attenuation values refer to a 10 m assembly with two bulkheads. Dry mate only; not for open-face pressure or waterblock use. Locking sleeves required.
HF Coax - 75 ohm Coax/ElectricTechnical details +
Electrical & environmental
| Voltage rating on electric contacts | 300 V DC/AC rms |
|---|---|
| Current rating on electric contacts | 5 A per contact (max 20 A per connector) |
| Voltage rating on coax insert only | 600 V, max nominal voltage |
| Frequency* | 0.9 GHz / 1.2 GHz / 1.5 GHz / 1.8 GHz / 2.1 GHz / 2.4 GHz / 2.7 GHz / 3.0 GHz |
| Attenuation* | 6.3 dB / 7.4 dB / 8.6 dB / 9.9 dB / 11.3 dB / 12.8 dB / 14.5 dB / 15.7 dB |
| Recommended max frequency | 3.0 GHz |
| Insulation resistance | > 200 MΩ |
| Contact resistance | < 0.01 Ω |
| Temperature rating (water) | - 4 to 60˚C, 25 to 140˚F |
| Temperature rating (air) | - 40 to 60˚C, - 40 to 140˚F |
| Storage temperature rating | - 40 to 60˚C, - 40 to 140˚F |
| Qualified pressure tested | 600 bar, 8,700 psi (mated) |
Materials, cables & terminations
| Connector body | Chloroprene rubber |
|---|---|
| Bulkhead body | Brass, stainless steel, titanium or anodised aluminium |
| Bulkhead body (RA) | Brass, stainless steel, titanium or anodised aluminium |
| Power contacts | Female sockets in gold plated brass UNS - C36000, Male contacts in gold plated beryllium copper |
| Coax contacts | Gold plated contacts |
| O-rings | Nitrile |
| Locking sleeves | POM or stainless steel |
| Locking sleeves (RA) | RADLSA-M (black POM) |
| Snap rings | Stainless steel AISI 302 |
| Inline cable (2 ft, 60 cm) | Mini-RG59 coax and 6 x 20 AWG, 0.52 mm2 conductors |
| Coax and 6-contact bulkhead leads (3.3 ft, 100 cm) | RG179 coax and 6 x 20 AWG, 0.52 mm2 coloured PTFE |
Wiring reference
Confirm the exact part’s drawing and contact numbering before wiring.
Inline cable colour code
- 1: Black
- 2: White
- 3: Red
- 4: Green
- 5: Orange
- 6: Blue
Frequency and attenuation values refer to a 10 m assembly with two bulkheads. Dry mate only; not for open-face pressure or waterblock use. Locking sleeves required.
Images based on SubConn reference photographs from MacArtney. Illustrative references; connector details, supplied appearance and compatibility are confirmed with your quotation.
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