General
Connection	1 x SMA plug
Frequency range	824 - 960 MHz, 1710 - 2170 MHz
Aerial gain	3 dBi
Impedance	50 Ohm
Polarization	linear, vertical
VSWR	2,0
Transmitting power	10 W
Operation temperature	-30 ~ 70 °C
Colour	Black
Antenna length including magnetic base	ca. 217 mm
Cable type	Coaxial
Cable colour	Black
Cable attenuation	1,5 dB @ 1.5 GHz per metre
Cable diameter	ca. 2,7 mm
Cable length including connector	ca. 3 m
Magnet foot diameter	ca. 40,0 mm

The DELOCK GSM antenna, manufacturer number 12426, is a passive antenna designed for use in indoor and outdoor environments, intended for various mobile and wireless communication standards. It features an SMA plug as the connector and is designed for frequency ranges of 824 to 960 MHz and 1710 to 2170 MHz. This bandwidth covers standards such as UMTS, ZigBee (868 MHz / 915 MHz), DECT, Z-Wave, and LoRa (868 MHz / 915 MHz), making the antenna suitable for a wide range of wireless applications. The antenna has a gain of 3 dBi, enabling targeted signal amplification in vertical polarisation. The impedance is 50 Ohm, ensuring optimal matching with standard coaxial cables and wireless devices. The VSWR value of 2.0 indicates good impedance matching and minimises reflections in the transmission system.

Applications

The antenna is designed for use in mobile and stationary wireless applications, particularly in areas where a stable wireless connection across multiple frequency bands is required. Examples include use in GSM and UMTS networks, smart home systems using ZigBee or Z-Wave, industrial applications with LoRa technology, and DECT-based telephone systems. Applications range from enhancing mobile signal reception in buildings to supporting wireless networks in industrial or outdoor environments.

Functions and Equipment in Detail

The antenna features a magnetic base, enabling flexible mounting on metallic surfaces. The total length of the antenna including the magnetic base is approximately 217 mm. The integrated coaxial cable is of type RG-174, has a diameter of approximately 2.7 mm, and is black in colour. The cable length is approximately 3 metres, providing sufficient reach for connecting to wireless devices or modems. The cable attenuation is 1.5 dB per metre at 1.5 GHz, which must be considered when planning signal transmission. The magnetic base has a diameter of approximately 40.0 mm and allows secure attachment to metallic surfaces.

Technology Explained Simply

The antenna operates with linear, vertical polarisation, meaning the electromagnetic field is oriented vertically. This is particularly advantageous for communication with mobile networks, which are often vertically polarised. The antenna gain of 3 dBi means the signal is amplified in the main radiation direction, improving range and signal quality. The impedance of 50 Ohm is the standard value for many wireless devices and coaxial cables, allowing direct connection without additional matching. The VSWR value of 2.0 is within typical tolerance limits and ensures efficient energy transfer.

Compatibility and Accessories

The antenna is compatible with devices supporting the specified frequency bands, including UMTS, ZigBee, DECT, Z-Wave, and LoRa. Use requires a device with an SMA socket as the connector. The antenna is not connected to a power supply or power source, as it operates passively. The transmit power of 10 W refers to the maximum power the connected device can output, not the antenna itself.

Mounting and Installation

Mounting is done via the magnetic base, which can be attached to metallic surfaces such as metal walls, vehicles, or metal structures. The antenna should be mounted as free from obstructions as possible and in a position that allows direct line-of-sight to the wireless network. The 3-metre cable length allows flexible placement of the connected device. Installation requires no special tools, as the magnetic base enables easy attachment. The antenna is designed for operating temperatures from -30 °C to 70 °C, enabling use in various environments, including outdoors.

Operational Advantages

The antenna provides reliable signal transmission across multiple frequency bands, making it suitable for diverse applications. The magnetic mounting allows quick and flexible installation without requiring drilling or permanent modifications to the surface. The combination of compact design, integrated cable, and SMA connector ensures easy integration into existing systems. The black colour provides an unobtrusive appearance that blends into various environments. The operating temperature range of -30 °C to 70 °C allows use in different climatic conditions, including outdoors.

The antenna is designed for use with devices supporting the specified frequency bands and SMA connector. The specifications refer exclusively to the described antenna with integrated cable and magnetic base.