HORIZON HELIUM CITY 868
Suitable for the following miners:
Nebra, Sensecap, Cal-Chip, ClodPi, COTX Networks, Controllino,
FreedomFi, Linxdot, Heltec, Kerlink, Long AP, Pisces, RAKWireless,
and other devices operating at this frequency.
For certain applications, such as
urban environments or when large areas of terrain need to be monitored,
the Horizon 6dBi Helium City outdoor antenna will be the perfect
addition to your Helium system.
It is a solid solution that provides extra power and coverage for Helium outdoor base stations.
The antenna has an average gain of
6dBi, length 54cm, frequency range 868-880MHz and comes complete with
hardware for pole and wall mounting.
Helium LoraWan devices, compatible with commercially available broadband antennas covering the EU868 and US915 MHz ranges.
These antennas also receive strong signals from GSM 900MHz transmitters, operating in Europe with high powers.
adversely affects the range and sensitivity of Helium-LoraWan devices,
intermodulations may appear, especially near GSM antenna masts.
antenna has a built-in bandpass filter that works without attenuation
in the working band of the antenna and is characterized by attenuation
for other frequencies.
filter located in the antenna radiator is a shortened segment with a
wavelength of 1/4 for the 868 MHz frequency. Frequencies different from
the antenna operating frequency are discharged to the ground. The filter
attenuates unwanted signals by a few dB.
is a specialized narrowband antenna operating in a dedicated band
(EU868), which allows to obtain a high signal-to-noise ratio (SNR) and
maintain high sensitivity of the receiver in the device.
range obtained on this antenna is even several kilometers. The range
depends on the mounting height, the type of Access Point, the quality of
the antenna connector used (unit attenuation, length, quality of
connectors), as well as the terrain and configuration of access points
on the other side of the link.
the construction of the heat sink, we do not use LC matching circuits
(capacitance-inductance correlation) that allow for "artificial" antenna
impedance adjustment and lowering the VSWR coefficient. This causes an
increase in induction or capacitance, which results in "blurring" of
digital signals and has a negative effect on the bit / Hz encoding and
the error rate (BER). Our antenna works "clean, resistive" and has a
very low self-noise figure and an excellent bit / Hz encoding ratio.
The antenna housing is grounded, which protects it against electrostatic discharge
(electric charges appearing on the antenna are discharged to ground)
For proper operation, the mast and antenna must be grounded to the existing lightning protection system.
Despite the lack of lightning protection of the device, the antenna mast and the antenna must be grounded.
The ground wire should be taken as short as possible and directly connected to the ground.
The mast mounted antenna should be grounded
to the antenna mast or to the cable with an equipotential bonding conductor
with a cross-section of not less than 8 mm2 Cu.
For additional safety, install a gas lightning arrester. The assembly instructions are HERE.