Retevis two-way radios RB48

When a crew is spread across a jobsite, quick radio contact can be more practical than relying on people to find one another. The Retevis RB48 is a six-radio set intended for team communication in demanding work environments.

Its bright yellow finish makes the radios easier to spot, while the six-way charger gives the set a shared charging point. That’s a useful combination for a crew that needs several handsets ready at once.

The headline durability and range figures are product claims, so treat them as guidance rather than a promise of identical performance at every site.

What to know

The RB48 is rated IP67, with the listing specifying immersion in 1 m of water for up to 30 minutes and resistance to dense dust. It is also described as drop-proof from 2 m and tested to MIL-STD-810H for conditions including vibration, heat and cold. It floats, according to the product name, though no details are given about how it behaves in different water conditions.

For communication, the listing claims coverage of up to 300,000 sq. ft. or 25 floors. Actual radio reach can depend on the site, so a large building or obstructed work area may not match the advertised maximum. There are 22 preset channels, with 38 CTCSS and 83 DCS codes to help reduce unwanted transmissions, these settings should not be mistaken for encryption.

Each radio has a 2000 mAh battery. The stated figures are up to 20 hours of continuous use and 100 hours on standby, which describe different usage conditions. Keep in mind that a full shift of frequent transmitting may use battery faster than standby figures suggest, so charging arrangements matter for longer days.

How to use it

The oversized front PTT and a second side PTT make transmission accessible from either hand. For example, a worker carrying materials could press the side button to call a teammate, while someone holding the radio in the other hand has the front control available. VOX offers hands-free operation, and vibration alerts, call tones and an optional roger beep provide other ways to notice or confirm a message.

The set includes a six-port charger and USB-C charging. Remote and local alarms, key lock and silicone button covers round out the listed features. The bright casing is practical when radios are set down among tools, although it won’t replace a clear team channel plan.

Practical tips

Before distributing the radios, agree on a channel and code for the crew, then test communication from the locations people will actually use. A quick check between the ground and an upper floor can reveal weak spots before they matter. Keep the six-way charger in a consistent place and return handsets there when the shift ends.

For a jobsite with frequent drops, dust or wet conditions, the protection claims make the RB48 more relevant than a basic radio set. A simpler, lighter-duty option may be enough for occasional indoor coordination, a team that needs guaranteed coverage across a complex site should not rely on the advertised maximum without testing its layout.

Buying questions

How many radios are included? The product name identifies this as a six-pack, and the listing describes a six-way charger.

Can it be used in wet conditions? It has an IP67 rating and silicone button covers for wet environments. The stated water detail is 1 m for up to 30 minutes, no other immersion conditions are specified.

Does the battery last 100 hours in continuous use? No. The listing separates up to 20 hours of continuous use from 100 hours on standby.

For your situation

It suits you if your crew needs several radios together, quick push-to-talk access and protection suited to rough jobsite handling. The six-way charger and two PTT positions are especially useful when handsets are shared across a team. It may not be the best choice if you need confirmed long-range coverage in a specific building, since the stated maximum does not guarantee reach through every layout. Choose it for practical, coordinated team communication, choose a more specialised system if site-specific coverage is the deciding requirement.