Battlefield short text messaging system

This system would be a supplementary communication network that would serve to minimize the traditional radio usage, since the constant use of traditional radios quickly drains their batteries, and replacing or recharging those could be very difficult in the battlefield.

And there are plenty of situations that require fast and secure communication within a distance of several kilometers when instead of speech, text message transfer is sufficient.

The supplementary communication network would be based on CW grenades. The CW grenade would be a smoke grenade size radio that would be specifically designed for battlefield conditions, and capable of receiving and transmitting continuous wave signals (like Morse code). Since the technology on which it is based already exists (for example the goTenna), the development costs could be reasonable.

Simplified diagram about the CW grenade:

1. The shell of the CW grenade would be waterproof and shockproof. It would consist of two main parts, which could be rotated on each other. Rotating clockwise the upper part would turn on the CW grenade. Rotating in the opposite direction would turn off the CW grenade, and further rotating the CW grenade can be disassembled for battery change.
2. The power supply will be provided by four rechargeable AA batteries.
3. The radio would be installed in the upper part of the CW grenade.
4. The top of the CW grenade would be fully rotatable so that the operating frequency could be selected. On the top of the CW grenade, like an hour's dial, there would be sixty line markings, and each marking would be a different frequency number. That is, the CW grenade would not have a digital display and various adjustment buttons, for making it even simpler and cheaper.
5. Safety pin to prevent accidental frequency change.
6. Very small folding handle in which a cord or a carabiner could be inserted, thus the CW grenades can easily be carried on tactical vests, or can be placed on combat vehicles and different landmarks, for example on tree branches. 

Operation of the communication network:

The CW grenade would be designed for working in a network, which could contain various smart devices. Writing and reading messages would be done on smart devices connected to the CW grenades via radios. These smart devices could be secure, waterproof, shockproof and high battery capacity smartphones, laptops or similar smart devices.

That is, a CW grenade would serve simultaneously for sending messages, and receiving targeted messages from other CW grenades, and as an automatic signal amplifier for transmitting messages between the CW grenades, but the messages would be handled through an app, that could be installed on any smart device which can be connected to the soldier's traditional handheld radio.

In its automatic signal amplifier function, the CW grenade would not amplify the incoming signal, but would recognize the transmitted messages and resend them, so the transmitted signal would be strong and noiseless again. And since each message would have its own unique identification number, the CW grenades would not send the once already transmitted  messages again.

Every soldier would have an own tactical smartphone and at least one CW grenade. To send a message, one of the soldiers would use the smartphone app to write the message. To ease the use, the smartphone could be fixed to the forearm of the soldier. The message would be a short text message like an SMS. The app would encrypt the message, add a unique message identification number, the sender's own identification number and the recipient's own identification number, and then send it to the CW grenade via the soldier’s traditional handheld radio.

The CW grenade using its own radio will send the encrypted text message as CW signal. All CW grenades that operate at the same frequency and detect the signal will automatically recognize the identifier numbers from the signal, and if the smartphone with the recipient's identifier number is connected, then the message will be forwarded to the recipient's smartphone in which the app can decrypt and display the message.

The usefulness of this network is that no matter how many CW grenades should be used as an amplifier between the sender and the recipient. And the soldiers can carry more CW grenades, which can be placed on the battlefield. Thanks to the durability of the CW grenades, there is no need to be careful when placing them, it can even be thrown on tops of trees and buildings, and these CW grenades can be left behind as a consumable device.

Because the CW grenades would be set to the same frequency as soldiers' own handheld radios, sending simple text messages through CW grenades instead of talking would be a very energy efficient way to communicate dozens or even hundreds of kilometers.

In addition, one of the sixty available frequencies on the CW grenade could be labeled as an emergency frequency, and equipped with external antennas and solar panels, the CW grenades set to the same frequency can be placed in permanent locations, from mountain tops to safe houses, creating an always available backup communication network in places like Afghanistan. The acceptable identification numbers could be pre-programmed into the placed CW grenades to prevent network overload by unauthorized use.

Tactical puck

The tactical puck would be a hockey puck size explosive device, which could be used with a radio remote control device, and would be ideal for neutralizing door locks and blasting a larger hole into a door, through which a stun grenade could be easily thrown. Thus, it makes it easier to open the door, and entering the room can be safer.

Simplified structural diagram about the tactical puck:

1. Puck shaped device.
2. On top of the puck, a handle would be in the middle for the easier grasp.
3. The bottom of the puck would be a rotatable and detachable cap. Rotating and removing this cap would activate the puck RFID tag. Without rotating and removing the cap, the puck can not be armed, so the cap would serve as a kind of safety pin.
4. Circuits that break when the cap is rotated and removed, and activate the RFID tag.
5. RFID tag, each puck would have its own unique code. This will ensure that only the selected pucks could be arming and exploding.
6. Igniter for the explosive.
7. A small pressure-resistant container for storing neutral gas. The container would be made of copper.
8. High pressure compressed neutral gas, for example nitrogen.
9. Firing pin with a tension spring for opening the pressure container, allowing the blending of the liquid explosive with the neutral gas.
10. Liquid explosive.
11. Non pressure-proof membranes, a dozen on the perimeter of the puck.

Simplified structural diagram about the radio remote control device:

1. The radio remote control would be a small cylindrical device.
2. The top of the device would be an openable cap.
3. Rechargeable AA battery.
4. RFID tag reader.
5. Mode selector slide switch.
6. Detonate button.
7. Radio with radius range of a few dozen meters.

Operation of the tactical puck:

To use the tactical puck, it first must be rotated and removed the cap on the puck bottom. This also activates the puck RFID tag. The removed cap is disposable. The bottom of the puck would be coated with an extremely fast grab glue, that is the puck should be placed immediately after the cap is removed.

The radio remote control device must be switched on with the mode selector slide switch, and the device should be kept in a few centimeters to the puck for a moment, so the RFID tag on the puck can transfer its unique code to the device. From that moment, the puck is armed and synced with the radio remote control device.

Coming at the safe distance, the mode selector slide switch on the radio remote control device can be switched to detonate mode, and to open the cap, on the device the red button can now be pressed to explode the puck.

As a result of the radio signal provided by the radio remote control device, first the firing pin penetrates the wall of the nitrogen gas container, opening the container in the puck. As a result of the high-pressure nitrogen gas, the liquid explosive breaks through the membranes, and it’s ejected laterally and downwards from the puck. The liquid explosive would stick to the surfaces like napalm.

After a few seconds, before the puck is completely emptied, the igniter detonates the liquid explosive. Thereby, the explosion occurs in a thirty centimeters diameter circle.

Other using possibilities:

More tactical puck could be used simultaneously, for example, placing them in door hinges.

Or if two or three pucks detonate on one another, with the greater hitting power they could blast a hole on a brick wall.

In another mode of use, the tactical puck can explode without the use of the nitrogen gas. With the copper-walled container the puck inner structure would be similar like the shaped charges, so that a puck would be able to penetrate a thick metal door, opening that with a smaller but focused explosion.

The tactical pucks would be easy to carry, easy to place, safe to use, and can be used in many ways, so these can be ideal for everyone from SWAT teams to counter-terrorist military units.