Radio-based communication even without a network

E-mail and messaging over radio

Dead-Drop connects radio operators and the internet in both directions. Send and receive messages via shortwave, VHF, UHF, and CB, even in off-grid scenarios.

When the internet fails, communication breaks down

In crisis, remote, or offshore situations, conventional internet channels are unreliable.
Radio and internet are often not cleanly connected, so messages remain trapped in separate systems.
Delivering e-mail without a stable network connection is barely practical with standard tools.

Why the name Dead-Drop

Dead drop (also called a dead letter box) comes from intelligence tradecraft. It means a hidden handover point where information is exchanged asynchronously, without direct contact between the parties involved.

Core idea: asynchronous handover instead of a direct meeting.
Goal: greater operational security by separating sender and recipient.
Historically known from espionage tradecraft, especially during the Cold War.
Today it can also be understood digitally and wirelessly: data is left behind and collected later.

Dead-Drop applies exactly this principle to radio communication: messages are relayed reliably even when no permanent internet connection is available.

A technical bridge between radio networks and the internet

Dead-Drop forwards messages between radio stations and internet mailboxes. This keeps communication possible when direct internet connections are unavailable or unstable.

SysOps wanted

A SysOp operates a node. A node is a combination of radio equipment, antenna, computer, and the required software.

For operating a node, a SysOp receives 55 percent of the subscription fee paid by users whose connections run through that node.

If you want to become a SysOp and support Dead-Drop, just get in touch with us.

Three clear benefits

Communication without the internet

Message flow remains available even when a conventional online connection is not.

Radio-to-internet, internet-to-radio, and radio-to-radio

Dead-Drop connects all directions in one continuous channel for e-mail and text messages involving radio operators.

Off-grid capable for real-world operations

Suitable for radio use in remote areas, at sea, and in failure scenarios.

Technical classification

supported radio ranges (shortwave, VHF, UHF, CB)

communication directions (radio <-> internet, radio <-> radio)

24/7

designed for continuous message operation

"Technical references and field reports will follow after the current pilot phase has been completed."

Status: in preparation

Frequently asked questions

Who is Dead-Drop for?

It is intended for amateur radio operators, CB users, preppers, and maritime users who need to exchange messages even without stable internet. Dedicated users can contribute as SYSOPs, operate transmitting and receiving stations, and share proportionally in the revenue from paying users whose connections run through their nodes. The detailed model will be explained on a dedicated page.

Which radio ranges are supported?

The platform is designed for shortwave, VHF, UHF, and CB radio.

Is it too expensive?

Entry starts with a trial account. Subscription revenue finances the ongoing expansion of transmitting and receiving stations, in which anyone can participate. SYSOPs who operate stations share proportionally in subscription revenue from paying users whose connections run through their nodes. The Pro plan mainly becomes worthwhile when internet-to-radio traffic is needed regularly.

What is expanded in the Pro plan?

The Pro plan primarily increases the quota for incoming messages from the internet into the radio network.

What is needed to send and receive messages and forward e-mails to the internet?

You only need a working FLDIGI setup on your computer.

Where can I read how it works in detail?

The operating instructions are available directly from the menu bar after logging in.

Can I retrieve messages on my mobile phone?

Yes, messages from radio devices can be read via FLDIGI and from your mobile phone via a web frontend.