ARAD Directional Couplers 700-2700 MHz -5/-7/-10/-12/-15 dB (ARAD.1 Series)

Broadband indoor directional couplers for RF distribution and controlled signal tapping across 700-2700 MHz, with calibrated coupling levels -5 / -7 / -10 / -12 / -15 dB.

Models: ARAD.1-5, ARAD.1-7, ARAD.1-10, ARAD.1-12, ARAD.1-15 | Frequency range: 700÷2700 MHz | Use: INDOOR

Arad5 Arad 10 Arad 15 Directional Couplers 800-2500 MHz BROADBAND -5/-10/-15 dB

The ARAD.1 series directional couplers are broadband passive components designed for INDOOR RF distribution in coaxial networks where a controlled tap is required without interrupting the main line continuity. Typical applications include DAS and in-building systems, repeater and micro-repeater architectures, technical rooms and head-end areas where designers need predictable coupling levels, high isolation and stable behavior across multiple services.

Bands and services covered (700-2700 MHz)

Thanks to the 700-2700 MHz operating range, ARAD couplers support common cellular ecosystems including LTE/4G and 5G NR (sub-3 GHz) deployments and refarming scenarios across 700/800/900/1800/2100/2600 MHz. This makes them suitable for multi-operator indoor coverage, private LTE, neutral-host DAS and upgrade-friendly architectures where the passive layer must remain broadband.

How to choose the coupling value

Select the coupling level according to the required tap power and the balance between trunk and branch lines: -5 dB is used when a stronger coupled output is needed, while -15 dB is preferred for lighter taps, monitoring points or distributed branches. Intermediate options -7 / -10 / -12 dB help fine-tune coverage and simplify commissioning.

Why isolation and return loss matter indoors

In indoor RF networks, isolation helps limit unwanted interaction between branches, while a good return loss / VSWR supports stable repeater operation and reduces reflections that may degrade system linearity. These parameters are especially important in dense RF environments, multi-band distribution and tunnel-like confined infrastructures where signal management and troubleshooting must stay predictable.

Frequently asked questions about ARAD directional couplers

Practical answers for installers and system designers working on indoor DAS, repeater networks and broadband RF distribution from 700 to 2700 MHz.

What is a directional coupler used for in an indoor RF network?

A directional coupler provides a controlled coupled output (tap) while keeping the main line path continuous. It is used to feed branches, create monitoring points, or balance signal distribution in DAS and repeater-based architectures.

How do I choose between -5, -7, -10, -12 and -15 dB coupling?

Choose the level based on how much power you need at the coupled port. -5 dB provides a stronger tap, -15 dB a lighter one for distributed branches or monitoring. -7/-10/-12 dB are commonly selected to fine-tune balance, compensate cable losses and simplify commissioning.

Which services can be distributed with these couplers from 700 to 2700 MHz?

The broadband range supports typical indoor cellular ecosystems and upgrades across 700/800/900/1800/2100/2600 MHz, including LTE/4G and 5G NR sub-3 GHz bands, as well as multi-operator and private LTE scenarios where the passive layer must remain upgrade-friendly.

Why are isolation and return loss important in DAS and repeater installations?

High isolation helps reduce interactions between branches and improves stability. Good return loss/VSWR limits reflections, supporting predictable performance and reducing the risk of degradation in multi-band indoor distribution networks.

Can I use a coupler as a measurement or monitoring tap point?

Yes. A directional coupler can create a controlled tap for test instruments or monitoring receivers while keeping the main RF path intact, which is useful during commissioning, maintenance and troubleshooting activities.

Are these couplers intended for indoor use only?

This product line is specified for INDOOR installations, typically in technical rooms, cabinets and protected areas of RF distribution systems.

ARAD Directional Couplers 700-2700 MHz -5/-7/-10/-12/-15 dB (ARAD.1 Series) - Protel Antennas - Professional Antennas for Telecomunications