1920-2170MHz 21dBi Grid Parabolic Antenna/3G Antenna (GW-GPA1920-2170-21d)

Product Overview

Grid parabolic antennas do the heavy lifting on weak-signal sites. This one covers 1920-2170 MHz with 21 dBi of directional gain and is built to stay outdoors on a mast year after year. It is an antenna rather than an amplifier: it gathers signal from one direction and passes it down a coaxial cable to a repeater, line amplifier or radio, which is the equipment that actually amplifies and re-broadcasts it.

The design is deliberately single-minded. An omni antenna collects everything around it, noise included; the curved metal grid here focuses reception into a narrow beam pointed at the base station that serves the site. On a rural installation where a handset shows almost nothing, that focus is what lifts the incoming signal above the noise floor and gives a cell phone signal booster antenna something usable to work with.

The 21 dBi figure matters most when the mast is far from the equipment. Every metre of coaxial cable removes signal, and a high-gain antenna is the usual way to pay that loss back without relocating the electronics. Because the antenna sits at the start of the chain, it is worth getting right before anything downstream is changed.

There is no electronics in the head, so there is nothing on the mast to power or configure. The reflector, feed horn and pole bracket are passive metal hardware in a matte light grey finish.

Technical Specifications

Typical applications include boosting signals for wireless signal booster setups, point-to-point communication, and integration within mobile network repeaters. The antenna is relevant for network providers and equipment distributors looking to maintain or expand wireless coverage in rural or fringe locations while staying compatible with common cellular frequency bands.

Design Advantages

• A beam instead of a bucket - the curved grid focuses reception on the bearing of the serving base station, so interference and noise arriving from other directions are largely rejected. On a marginal site that focus is often the difference between a stable call and one that drops every few minutes.
• 21 dBi of directional gain - high gain is what pays for a long coaxial run. Where the equipment has to sit indoors or at the foot of the mast, the antenna can be the component that recovers most of the cable loss.
• An open grid keeps wind load down - wind passes through the wire reflector instead of pushing against a solid dish, so the mast, bracket and fixings carry less load on exposed sites.
• Nothing to power at the mast head - there is no amplifier, no power cable and no settings to lose in a storm. The antenna is passive metal hardware that hands signal to the equipment below.
• Metal construction finished for outdoor life - reflector, feed horn and bracket are metal in a matte light grey finish; fixings and cable joints are the parts to inspect over the years, as on any mast installation.
• A drop-in donor antenna for an antenna signal booster system - where an existing installation is limited by an undersized omni antenna, changing only the antenna is often the simplest upgrade, and the mast, cable and equipment can usually stay.

Typical Buyers

Installers and system integrators are the core users. They are extending 3G coverage to a farm, a village or a holiday park on the edge of the network, and they need an antenna that holds its aim, fits a standard mast and behaves the same way on every site so the same installation method can be repeated.

Retail partners and resellers keep a directional model next to their omni antennas, because a share of their customers have a site where an omni simply cannot hear the base station. A unit with a compact grid form is straightforward to stock and ship.

Site owners often arrive with a different starting point: they already run an outdoor cell phone signal booster system and the donor antenna on the roof is damaged, undersized, or was never right for the distance involved. Replacing that single part is a much smaller job than replacing the electronics.

Small operators and wireless installers also use the same antenna in short point-to-point links, where two units are aimed at each other to connect a remote building or a temporary site back to the main network. Its directional gain and frequency range meet standard requirements for 3G antenna upgrades, providing a focused signal without excessive size. The outdoor-ready metal grid design reduces wind resistance, which can be a consideration for durable installation in varying climates. The antenna’s certifications support compliance needs for international sales and integration projects.

Mounting and Aiming

1. Choose the position first. Pick the highest practical point with a clear view towards the base station, and keep the antenna away from metal roofs, parapets and other antennas that sit directly in the beam.
2. Fix the bracket to a rigid mast. The pole-mounting bracket needs a mast that does not flex in wind; a loose mast later shows up as a signal that drifts with the weather.
3. Aim at the serving base station. Set the antenna on the bearing of the site your network uses, working from a map, a compass or the planned azimuth, before tightening anything down.
4. Connect and weatherproof the cable. Fit the coaxial cable to the feed, seal the joint with self-amalgamating tape, and leave a drip loop so water runs away from the connector instead of into it.
5. Fine-tune on the readings. With the equipment running, make small changes in bearing and watch the received level; a narrow beam rewards accuracy, and a few degrees can make a visible difference.
6. Re-check after a few weeks. Wind, thermal movement and settling can shift a mast slightly, so confirm the fixings and the aim once the installation has been through its first stretch of weather.

Use Scenarios

• A village or hamlet on the edge of 3G coverage - the antenna goes on the highest building or a short mast and gives the repeater below it something to work with, instead of a signal that only appears at one upstairs window.
• A farmstead, ranch or remote homestead - long distances and no easy view of a town site are normal here, and the directional pattern lets the installation pick out the one base station that can actually be reached.
• A holiday park, golf course or rural resort - scattered buildings share one antenna and one repeater, which is far easier to plan than cabling each building separately.
• An industrial yard or plant perimeter office - steel structures block signal, so the antenna is mounted outside the building envelope while the coverage equipment stays indoors where it can be serviced.
• A temporary site or event compound - a mast and a directional antenna can be raised, aimed and taken down again around a project schedule.
• An existing outdoor cell phone signal booster installation that needs a better donor antenna - the mast and cabling are already in place and only the antenna at the top is changed.

System Integration

1. The antenna captures the downlink. At the head of the chain it collects the base station transmission on 1920-2170 MHz and hands it to the cable. As the front end of an antenna signal booster installation, it decides how much signal the rest of the system has to work with.
2. The cable carries it down. Loss grows with length and with cable quality, so use low-loss coaxial cable between the mast and the equipment.
3. The repeater or line amplifier boosts it. The equipment amplifies the signal and re-broadcasts it through a coverage antenna, or through a distribution system, into the area that needs coverage.
4. The uplink uses the same antenna in reverse. Handset transmissions travel back through the coverage antenna, the amplifier and this unit on their way to the base station, so it is the cell phone signal booster antenna for both directions and both matter.
5. Keep donor and coverage antennas apart. Physical separation and careful aiming between them stop signal from the coverage side re-entering the donor side and triggering feedback.
6. Match the band of every part. The antenna must cover the band the amplifier works in. This model covers 1920-2170 MHz; if your equipment runs elsewhere, choose an antenna built for that band rather than forcing this one.

Point-to-Point Links

Ordering and Delivery

• Tell us what the antenna will feed. A repeater, a line amplifier or a point-to-point radio, and the band it works in, so we can confirm the match before anything ships.
• For a commercial cell phone signal booster project, send the site details. Coverage requirement, mast position and the equipment behind the antenna are enough for us to say whether this model fits or another one in the range does.
• Confirm the connector and feeder cable. Bring the cable type and connector you plan to run; we will confirm the interface and flag anything that should change before the order is fixed.
• Ask about sample availability. If you want to evaluate one unit before committing to a quantity, ask your sales contact, who can confirm what is possible for your destination.
• Confirm quantity, packing and lead time with your sales contact. Larger orders are prepared for export, and the current lead time depends on quantity and schedule.
• Confirm your documentation needs. Tell us which declarations or paperwork your market requires and we will confirm what can accompany the shipment.
• Shipping and export. We ship to customers in more than 60 countries, including South America and the Middle East, and match the logistics option to destination and project timing. Contact us with the delivery address and schedule for details.

Cable Interface & Band Coverage

• The connector is matched to the feeder you plan to run, not fixed in advance. Tell us the port on your repeater, line amplifier or radio when you enquire and we will confirm the fitting on the antenna before the order is released. N-type ports are common on repeater outputs, but check the actual equipment rather than assuming.
• Run 50-ohm low-loss coaxial cable between the mast and the equipment. Loss rises with length and with thin cable, so choose the largest diameter the route and mast will take, and use one continuous length where possible instead of joining shorter sections.
• Keep the run as short as the site allows. The 21 dBi of gain is what pays back a sensible cable length; on an outdoor cell phone signal booster installation, the feeder and its joints are usually the first thing to check when performance drops.
• This antenna covers 1920-2170 MHz only, the range used by 3G/UMTS 2100 networks. An antenna fitted outside the band your network actually transmits on will perform poorly no matter how carefully it is aimed.
• It does not cover 1800 MHz or 2600 MHz, the bands many 4G/LTE networks use. If your site is served on either of those, tell us and we will name the model in the range built for it instead of leaving you to adapt this one.
• It is not a 5G antenna. Sub-6 GHz 5G deployments sit well above 2170 MHz, so this grid is the wrong tool for a 5G rollout, however good the mast position.
• Bands that only partly overlap are worth checking rather than guessing. Send the uplink and downlink frequencies your operator uses and we will say plainly whether they fall inside 1920-2170 MHz.
• Before ordering, have four details ready: the operator's band, the equipment port and cable type, the planned cable length, and whether the mast has a clear view of the base station. With those, we can confirm the antenna or redirect you to a commercial cell phone signal booster antenna that matches.

Construction and Compliance

The antenna is constructed with a metal grid parabolic structure and is CE and RoHS compliant, aligning with common international quality and safety standards. Its build is suitable for outdoor installation, balancing performance with environmental durability for consistent operation under varied conditions.

Technical Support & Model Matching

Getting the right model matters more than anything else, so Greetwin builds technical support into every order. Tell us the band, the site and the coverage you need, and our engineers will match a model to it, check gain and output power against your installation, and say plainly when something will not fit. We also advise on antenna placement, cabling and commissioning, then stay with you through troubleshooting once the system is running. All of this is backed by our ISO 9001 certified production in Shenzhen, responsive after-sales service and spare parts.

FAQ