Portable Repeater System,Is a receiver/transmitter/antenna/battery/etc.Can work independently,Carryed by one person,Transfer station.
Commonly used in emergency communications, field exploration, disaster area rescue, activity drills, etc.

Especially now,City life is under pressure.More and more people are participating in outdoor adventures, outdoor hiking and other sports.Considering security,Basically, they all travel in teams.Even communication is very necessary in the team.Can be used to chat to ease the fatigue on the road.Report the road conditions and remind everyone to pass safely.Information on weather conditions, planning tasks, etc.The location is notified, and someone is left behind.There are many other uses,It is being developed by more expedition teams.This time I used RT97 Repeater diy for a Portable Repeater System.
The plan is as follows:

Homemade Portable Repeater Solution

Homemade Portable Repeater Solution

The main features of the Portable Repeater System are:
1, light weight:
The Retevis RT97 Portable Repeater weighs 1.7kg.

Retevis RT97 Repeater Weight

Retevis RT97 Repeater Weight

The 4000mah lithium battery weighs about 800g.
The whole set of equipment weighs 4kg~10kg.
The main weight comes from the battery,
The larger the battery capacity, the greater the weight.
2, small size:
Retevis RT97 Portable Repeater measures 26*21*7cm
4000mah lithium battery battery volume: 24*20*7.5cm
The antenna is 40cm long after being folded.
3, easy to carry:
you can use a dedicated carrying system,
You can also DIY piggyback your own system.
A small backpack can hold all the equipment.
Single person carrying, car travel, can easily travel.

Backpack size

Backpack size

This size of the backpack has a lot of space left. You can build a system with a smaller backpack. You can also use a large backpack to solve the heat problem. This will not overheat when the boot time is longer.