For RFox2 modules that require an external antenna, we supply the following antennas as standard: 2JW0315-868-C675B (longer rod), AN-06 (short antenna), and 2J6615B_868MHz-020RG174-C20N (“puck” design for a conductive enclosure).
For installations where the antenna must be routed out of the control cabinet (e.g., a sheet-metal enclosure), the 2J6615B_868MHz-020RG174-C20N antenna is suitable (note the short cable); antennas designed for LTE modems, such as the AO-AGSM-MG5S - while it has poorer performance at 868 MHz, the main advantage may be the ability to mount it on the distribution cabinet or even further away from it (5-meter cable).
2JW0315-868-C675B
External omnidirectional antenna for the 868 MHz ISM band. The design is a flexible “whip” antenna with an SMA connector, suitable for RFox2 modules, as well as, for example, LoRa applications and LPWAN devices in general.
Electrical Specifications
| Frequency bands | 863–870 MHz |
| Rated frequency | 868 MHz |
| Type of antenna | Linear, omnidirectional |
| Gain | ~1.4 dBi |
| VSWR | typ. ~1.8 : 1 |
| Impedance | 50 Ω |
| Maximum power | 25 W |
| Polarization | Linear |
Mechanical Specifications
| Connector | SMA male |
| Design | articulated |
| Lengh | 113 mm |
| Diameter | 10 mm |
| Casing material | ABS UV stable |
| Color | Black |
| Mount | Direct screw-on mounting |
| Operating temperature | −40 to +85 °C |
AN-06
Compact external antenna for the 868/916 MHz band. The antenna is a shortened quarter-wave whip antenna with an SMA connector and a 90° joint. Frequently used in simple ISM applications.
Electrical Specifications
| Frequency | 868 MHz / 916 MHz |
| Antenna type | Shortened 1/4 λ whip |
| Gain | ~2.15 dBi |
| Impedance | 50 Ω |
| Maximum power | 10 W |
| Polarization | Linear |
Mechanical Specifications
| Connector | SMA |
| Design | 90° Joint |
| Lengh | ~ 85 mm |
| Active portion | ~ 65 mm |
| Hmotnost | ~ 9 g |
| Casing | PVC |
| Color | Black |
2J6615B_868MHz-020RG174-C20N
Low-profile external antenna for the 868 MHz ISM band, designed for outdoor and industrial use. The design features a screw-on “puck” antenna with an integrated 0.2 m RG174 coaxial cable and a male SMA connector. The antenna is suitable for RFox2 systems, LoRa, and other LPWAN applications.
Electrical Specifications
| Frequency bands | 863–870 MHz |
| Rated frequency | 868 MHz |
| Antenna type | Low-profile omnidirectional (“puck”) |
| Gain | ~ 2 dBi |
| VSWR | typ. ~1.2 : 1 |
| Impedance | 50 Ω |
| Maximum power | 25 W |
| Polarization | Linear |
| Emission | Omni-directional |
Mechanical Specifications
| Typ montáže | Screw-on |
| IP Rating | IP67 / IP69K |
| Dimensions | Ø 77.3 × 15 mm |
| cable | RG174 |
| Cable Lengh | 0,2 m |
| Connector | SMA male |
| Material | Industrial UV-stable design |
| Operating temperature | −40 to +85 °C |
| Mount | Anti-rotation screw mount |
Installation notes
The antenna is ground-plane-dependent. It achieves optimal performance when mounted on:
- a metal rack,
- a metal panel,
- a grounded metal surface.
Without a sufficient ground plane, the following may occur:
- reduced gain,
- worsened VSWR,
- shortened RF communication range.
Installation Recommendations
Recommended:
- installation on the top surface of the control panel,
- a minimum distance of several centimeters from other RF antennas,
- cable runs as short as possible.
Not Recommended:
- installation under a metal cover,
- proximity to RF converters and power cables,
- installation inside a completely enclosed metal space.
