Sina Khanifar

CEO

B.Sc. Physics, Oxford University

Sina Khanifar is an entrepreneur, technologist, and digital rights activist with nearly two decades of experience at the intersection of wireless connectivity and public policy. He is the CEO of both RSRF and Waveform, two companies united by a single mission: reliable connectivity, anywhere.

At RSRF, he leads the nation's premier turnkey in-building cellular solutions provider, specializing in enterprise-grade Distributed Antenna Systems (DAS) and neutral-host deployments, from initial design through installation, carrier coordination, and long-term network operations. At Waveform, he oversees the development and sale of hardware that helps consumers and businesses get stronger 5G signal.

Beyond his operating roles, Sina is deeply engaged in the broader technology and policy ecosystem. He is a Technology Fellow at the Electronic Frontier Foundation and serves on the board of Repair.org, the leading advocacy organization for the right to repair. He is also co-founder and advisor to OpenSignal, a pioneering crowdsourced mobile analytics platform, and an occasional investor in early-stage startups.

Earlier in his career, Sina was a prominent digital rights activist, most notably leading the successful campaign to make cell phone unlocking legal in the United States. He founded Taskforce.is, a volunteer organization of over 100 contributors building tools to make technology advocacy more accessible, and FixtheDMCA.org, an activism hub focused on reforming Section 1201 of the Digital Millennium Copyright Act. That work earned him the 2013 IP3 Intellectual Property Award.

Sina holds a BA in Physics from the University of Oxford (2006).

Sina Khanifar-RSRF

Articles by Sina Khanifar

25 articles

Top 5 Private 5G Network Vendors
Blog Post

Top 5 Private 5G Network Vendors

Explore top private 5G network vendors and learn how to compare security, reliability, scalability, support, and industry expertise before deployment.

Jun 27, 2025·5 min read
Active vs Passive DAS: Which is Best for You?
Explainer

Active vs Passive DAS: Which is Best for You?

Compare active and passive DAS systems, including how they work, where each performs best, and how to choose based on building size, budget, and capacity needs.

Jun 27, 2025·7 min read
What are Private 5G Networks: Benefits, Capabilities, and the Future
Explainer

What are Private 5G Networks: Benefits, Capabilities, and the Future

Learn what private 5G networks are, how they compare to Wi-Fi and public networks, and how they improve security, performance, mobility, and control.

May 8, 2025·6 min read
Understanding Indoor Distributed Antenna Systems: A Comprehensive Guide
Guide

Understanding Indoor Distributed Antenna Systems: A Comprehensive Guide

Learn how indoor DAS improves in-building cellular coverage, including signal sources, system types, installation steps, benefits, and deployment challenges.

Apr 22, 2025·7 min read
DAS vs. Small Cell: Which Is the Right Solution for Your Cellular Connectivity Needs?
Blog Post

DAS vs. Small Cell: Which Is the Right Solution for Your Cellular Connectivity Needs?

Compare DAS and small cell solutions, including coverage, capacity, carrier support, installation complexity, and the best use cases for each technology.

Apr 22, 2025·5 min read
Successful DAS Deployment: Key Elements for Excellence
Blog Post

Successful DAS Deployment: Key Elements for Excellence

Learn why successful DAS deployment depends on early planning, equipment staging, site access, facilities coordination, and clear client communication.

Apr 22, 2025·3 min read
Understanding DAS Deployment Timelines: What You Need to Know
Blog Post

Understanding DAS Deployment Timelines: What You Need to Know

Learn what affects DAS deployment timelines, from building size and layout to construction conditions, project complexity, and client scheduling.

Mar 16, 2025·6 min read
The Unique Value of RSRF in DAS Deployment
Blog Post

The Unique Value of RSRF in DAS Deployment

Learn how RSRF delivers DAS deployments with a focus on speed, teamwork, customer trust, end-to-end support, and reliable long-term performance.

Mar 16, 2025·3 min read
Preparing for a Successful Distributed Antenna System Installation
Explainer

Preparing for a Successful Distributed Antenna System Installation

Learn how planning, equipment coordination, client communication, site surveys, permits, and testing help ensure a smooth DAS installation.

Mar 16, 2025·3 min read
Understanding the DAS Installation Process: A Comprehensive Guide
Guide

Understanding the DAS Installation Process: A Comprehensive Guide

Learn how DAS installation works, from equipment staging and site walks to antenna placement, cable routing, commissioning, and deployment challenges.

Mar 16, 2025·3 min read
Why Floor Plans Are Key to a Successful DAS Deployment
Blog Post

Why Floor Plans Are Key to a Successful DAS Deployment

Learn why accurate floor plans are critical for DAS deployment, how they improve design accuracy, and how they help avoid delays, redesigns, and coverage issues.

Mar 3, 2025·3 min read
Distributed Antenna System Architecture: Complete Guide to DAS Architecture
Guide

Distributed Antenna System Architecture: Complete Guide to DAS Architecture

Learn how DAS architecture works, including signal sources, antennas, cabling, active, passive, and hybrid systems, plus key design and maintenance factors.

Feb 12, 2025·7 min read
How Much Does a Distributed Antenna System Cost?
Explainer

How Much Does a Distributed Antenna System Cost?

Learn what affects Distributed Antenna System cost, including system type, building size, cabling, carrier fees, installation, maintenance, and hidden expenses.

Feb 3, 2025·7 min read
What is a Distributed Antenna System (DAS)?
Explainer

What is a Distributed Antenna System (DAS)?

Learn what a Distributed Antenna System is, how DAS improves in-building cellular coverage, and how active, passive, and hybrid systems compare.

Feb 3, 2025·4 min read
The Ultimate Guide to Passive DAS Systems
Explainer

The Ultimate Guide to Passive DAS Systems

Passive DAS uses a rooftop donor signal, repeater, coaxial cabling, and indoor antennas to improve cellular coverage in smaller and mid-sized buildings.

Jan 29, 2025·5 min read
Active DAS Explained: Benefits, Installation, and Use Cases
Explainer

Active DAS Explained: Benefits, Installation, and Use Cases

Active DAS uses fiber optic cable to distribute carrier-grade signal across large, high-traffic venues. Ideal for stadiums, hospitals, airports, and large commercial buildings where capacity and reliability are non-negotiable.

Jan 29, 2025·9 min read
What is Hybrid DAS? Benefits and Key Use Cases Explained
Explainer

What is Hybrid DAS? Benefits and Key Use Cases Explained

Hybrid DAS combines fiber and coaxial cabling to deliver reliable cellular coverage across large or multi-floor buildings while keeping costs lower than a fully Active DAS system.

Jan 29, 2025·7 min read
Private 4G/5G Networks FAQs: Answers to Top 15 Questions
Blog Post

Private 4G/5G Networks FAQs: Answers to Top 15 Questions

Get answers to common private 4G and 5G network questions, including how they work, how much they cost, when to use them, and how they compare to WiFi.

Jan 29, 2025·8 min read
Top 10 Use Cases for Private 4G/5G Networks
Blog Post

Top 10 Use Cases for Private 4G/5G Networks

Explore how private 4G and 5G networks support manufacturing, logistics, healthcare, mining, events, education, utilities, retail, and construction.

Jan 29, 2025·7 min read
Private 4G and 5G Networking: Everything You Need to Know
Explainer

Private 4G and 5G Networking: Everything You Need to Know

Private cellular networks use dedicated 4G LTE or 5G infrastructure to provide secure, reliable wide-area connectivity for operations, IoT, mobility, and critical applications.

Dec 12, 2024·14 min read
How to Plan a DAS Upgrade for Optimal Coverage: A Complete Guide
Guide

How to Plan a DAS Upgrade for Optimal Coverage: A Complete Guide

Learn when to upgrade a DAS, what factors to consider before upgrading, and how to choose the right system, vendor, and post-installation plan.

Dec 12, 2024·15 min read
What is a Distributed Antenna System: An In-Depth Explainer
Explainer

What is a Distributed Antenna System: An In-Depth Explainer

Learn what a Distributed Antenna System is, how DAS works, when it’s needed, and how active, passive, and hybrid DAS solutions compare.

Dec 12, 2024·12 min read
Top 7 Benefits of DAS in Commercial Real Estate: Boost Connectivity & ROI
Blog Post

Top 7 Benefits of DAS in Commercial Real Estate: Boost Connectivity & ROI

DAS improves cellular coverage in commercial buildings, helping owners reduce dead zones, support smart building systems, improve tenant satisfaction, and increase ROI.

Dec 12, 2024·6 min read
How to Choose a DAS Installer Integrator: 10 Essential Tips and Insights
Guide

How to Choose a DAS Installer Integrator: 10 Essential Tips and Insights

Learn how to choose the right DAS integrator by evaluating technical expertise, carrier relationships, regulatory knowledge, testing, support, and long-term upgrade planning.

Dec 12, 2024·10 min read
Why us
Blog Post

Why us

Poor indoor cellular coverage costs businesses every day. RSRF has spent over a decade solving exactly that problem. Faster installs, better equipment, and less carrier red tape than any other provider.

Apr 22, 2024·2 min read