In communication, a two-way radio is a device that works similarly to a telephone but with a loudspeaker. That allows a voice message to be transmitted and received instantly on both sides of the radio frequency spectrum.
When using a two-way radio, the primary difference is that, unlike a telephone, only one person can speak at a time, and each person takes turns speaking by pressing a PTT (push to talk) button on their radio handset. A clear message can be delivered every time without interference or interruption due to this arrangement.
Moreover, because two-way radios do not require number selection, ringing, or answering, they can be used to communicate in real-time. More recently, digital technology has enabled new features to two-way radios, such as safety features such as an emergency alarm and lone worker alerting capability.
Activation through the use of voice (VOX)
Firstly, VOX Disadvantages
Because VOX operates by listening for audio signals through an attached accessory, background noise that is close to the sound of a human voice will also cause it to activate. This means virtually anything can be used to activate the voice activation feature.
How to Make Use of VOX
The voice activation feature on most two-way radios is only accessible through an external VOX capable earpiece or headset. Simply begin speaking, and the two-way radio will automatically begin transmitting as soon as you are connected to the network. When there’s no audio coming through your earpiece or headset, the two-way radio automatically turns off the PTT function.
VOX is being activated.
Most business-grade licence-exempt two-way radios allow you to activate the voice activation feature by pressing buttons on the radio or simply plugging in an earpiece or headset that supports voice activation. Some more complex two-way radios, such as our licenced two-way radios, will, on the other hand, necessitate some programming changes.
Which is better, VHF or UHF? That is the question.
The advantage of using VHF is that it has a longer wavelength and provides a more excellent range per watt of energy. The antennas are as high as possible, above all buildings and objects, and achieve a nearly perfect line of sight. However, because VHF cannot penetrate solid objects very well, there must be as few obstructions as possible in the way of the signal.
UHF has a much greater ability to penetrate solid objects than VHF. The fact that we typically use portable two-way radios between waist and chest height means that we do not benefit from our height advantage. It is the recommendation of Radiotronics to stick with VHF for fleets that only have vehicles and UHF for fleets that have both portable and vehicle radios.
Channel scanning allows the user to keep track of a large number of channels simultaneously.
As a result, when a transmission is received, respond immediately. In most cases, the scan feature can be programmed to include or exclude channels from the scan process. Scanning fewer channels reduces the time it takes to complete the scan. If a transmission is detected, your radio will stop and pause for a brief period, allowing the operator to respond to the transmission before continuing its circuit through the selected channels.
High priority channels
Channel scanning is an excellent choice in environments where updates are given frequently, as it allows all members of your team to remain alert to changing conditions at all times. When programming your radio, you can include or exclude channels from the scan. This allows you to add channels with the highest priority, ensuring that your staff never misses a critical transmission.
Digital hybrid radios are capable of scanning either one or both digital and analogue channels simultaneously in most cases. This allows for a highly flexible scan facility, allowing the user to simultaneously monitor many channels in both analogue and digital modes.
Oricom UHF028 Compact 5W UHF CB Radio
The Oricom UHF028 Compact 5W UHF CB Radio has a five-year warranty. Rugged design and a tiny size combine to make the UHF028 UHF CB Radio the appropriate communications choice for any 4WD, tractor, or construction truck.
The high-quality Oricom finish guarantees that you can hear everything, and the heavy-duty microphone plug and 5-year warranty make this model a good value for money.
- There are 80 channels in all, with 75 being voice channels.
- It’s small and portable.
- Plug for a heavy-duty microphone.
- CTCSS number 38.
- The duplex range extender.
- Priority scanning and open/instant/repeater scanning.
- Volume, squelch, and rotary controls.
Increased Scanning Speed Overview:
The radio SCAN function can scan for radioactivity across multiple channels. Scanning occurs at 40 channels per 7 seconds, a significant speed increase. Scanning will stop at that channel as soon as a signal is detected, and scanning will resume as soon as the track is free of interference.
Modes of Scanning
The radio has four modes: open scan, priority scan, instant scan, and repeat scan. During an available scan, press the SCAN button to switch to one of the four scan modes listed below, which are as follows:
The Open Scan feature performs a search for activity on all CB channels. When identification of the channel occurs, the scanning process stops, allowing you to hear the signal. Scanning will continue automatically as soon as the channel has been free for 5 seconds without interruption.
Scan for Priorities:
Priority Scan not only scans the radio for activity but also inserts your Priority Channel into the scan sequence, allowing you to receive more information faster. Any signals received on your Priority Channel will take precedence over those obtained on the other channels unless you specify otherwise. Your Priority Channel will receive regular monitoring while scanning for missed calls.
When performing a Priority Scan, press the SCAN button to initiate an instant Scan. Only the three channels that receive programming into the instant channel buttons are scanned.
Oricom UHF390 5W CB Radio with Controller Speaker Mic
- wattage: 5 (max TX power).
- Controller with heavy-duty speaker microphone.
- Rugged tiny Transceiver.
- The LCD is large and easy to see.
- For consistent audio levels, use Automatic Level Control (ALC).
A little about the Duplex function:
Your radio comes equipped with a repeater access feature that allows you to use a local repeater station (if available in your area). Repeaters are shared radio systems installed by interested parties (clubs, local businesses) and pick up transmissions on specific channels and re-transmit (or repeat). The received signal to another channel, allowing more people to hear it.
It is possible to configure the Repeater Access function used by local repeater stations. When activated, your radio will receive the Repeater on its designated channel. Thus, transmitting to the repeater channels 31 to 38 and 71 to 78. The factory default setting for all repeater channels comes set (“On”).
Uniden UH5060 Mini Compact UHF with Remote Speaker Mic & Antenna
1-year warranty on the Uniden UH5060 Mini Compact UHF with Remote Speaker Mic and Antenna.
Important information – the expansion of UHF CB channels to 80 channels.
Increased channel capacity within the UHF CB Band is available to all users. The ACMA intends to quickly convert the vast majority of the current wideband 40 channel to narrowband channel usage. You are allowing, for the addition of additional channels, up to 80 channels. A newly purchased narrowband radio will have more channels than your old one.
Please refer to the guidelines above and the channel chart for more information on the various media. You can also find a list of currently authorised channels on the ACMA website in Australia and the Medical Devices Authority website in New Zealand.
Uniden UH5000 Mini Compact UHF Radio
Five-year warranty on the Uniden UH5000 Mini Compact UHF Radio. The latest in UHF Communications from the world’s leading wireless communication companies. The UH5000 has 80 channels, making it one of the first UHF mobile phones. It will be free to upgrade when the ACMA standard is released later this year.
The UH5000 is the pinnacle of compact UHF communications, and it’s intended to withstand the harsh conditions of Australia and New Zealand, making it suitable for truck drivers, 4WD Drivers, and caravan drivers.
This unit is ideal for the professional who has to stay in touch with the outside world, thanks to Uniden’s dependability and competence in UHF.
The Uniden UH5000 has the highest-quality components, engineering, and style you’d expect from Uniden.
The UH5000 is a 5W unit with a Flip LCD Display that allows huge icon display and reverse mounting. The built-in AVS circuitry provides an automatic volume stabiliser that detects narrowband and wideband transmission and automatically adjusts incoming audio levels to match. The UH5000 includes a Standard Microphone, Microphone Hanger, and Mounting Bracket, among other features.
Uniden UH9080 Mini Compact UHF Radio
The UH9080’s inbuilt BearCat engine transforms it into a UHF and Scanner in one, allowing you to simultaneously scan unencrypted analogue UHF Police/Fire/Ambulance frequencies, UHF CB channels, and user-programmable channels. Triple Watch, available scan, and group scan ensure that communication is consistent. Close call captures strong/close UHF signals using RF. Using the Instant Replay Function, you can also record and playback up to 1 minute of recent received signals.
The UH9080 also has a “Voice Enhancer,” which is the most recent technology. Voice Enhancer provides a Natural Voice Enhancer by allowing you to choose from four different audio settings (Normal, Bass, Mid-Range, and High).
GME 27MHz DIN Mount CB Radio
The TX2720 is a 4 Watt DIN size 26 MHz AM CB radio with various improvements, including increased transmitter and receiver performance. Channel Scanning, Priority channel, and back-lit Liquid Crystal Display (LCD) with the dimming feature are fully user-programmable. The radio’s small size makes it simple to instal, and it comes with a flush mount kit for standard DIN mounting—1 Year Warranty on the GME 27MHz DIN Mount CB Radio.
Transmission Power of 4 Watts
Advanced Noise Limiting (NL) Circuitry Optimised Automatic Gain Control Channel Scanning with Memory Priority Channel with Dual Watch
GME 1W & 5W UHF CB Handheld Radio Twin Pack with Accessories
Up to 30 hours of battery life, VOX Hands-free mode, and a built-in LED torch. A full suite of professional-grade accessories and class-leading 5-watt transmission power are included. Furthermore, an IP67 ingress protection rating for outstanding performance and years of reliable use in the harshest Australian environments and dependable service in the harshest Australian environments.
Also, TX6160X is also a stand-alone device and a single unit with a complete set of professional-grade accessories (TX6160).
Using the VOX feature, you can hold conversations without using your hands. In response to your voice (or another nearby sound), the microphone automatically detects it. It transmits, removing the need to press the PTT button to activate the radio.
To configure the radio for VOX operation, follow these steps:
Step 1: Press and hold the Menu key until the radio beeps three times.
Step 2. Briefly press the Menu key repeatedly until the letters ‘VX’ appear on the screen. The symbol will be flashing at all times.
Step 3. Use the keys to adjust the VOX sensitivity from 1 (minutes) to 3 (hours). 4. (max). A minimum setting requires a louder voice to activate the VOX. In contrast, a maximum setting requires a softer voice to activate the VOX.
Step 4. When ‘off’, VOX sensitivity completely turns off the VOX feature.
Step 5. To confirm and save your selection, press the PTT button on your keyboard.
When VOX is enabled, the VOX icon appears on the device’s display. It is important to note that the radio may transmit when using the radio in a noisy environment with the VOX sensitivity set to the maximum. If this occurs, decrease the sensitivity setting.
GME 2W UHF CB Handheld Radio Twin Pack
The TX677 is a serious performer in a compact chassis, with a compact and lightweight mechanical construction, up to 14 hours of battery life, convenient USB charging, a rotary power/volume control for easy operation, and switchable transmission power (2/0.5 watt), and a user-programmed scan function.
Two TX677 radios, a compact double desktop charger, an AC adaptor, and a 12V DC vehicle charger are included in the TX677TP.
A single unit (TX677) and a quad pack (TX678) are also available (TX677QP).
Lightweight and compact
Battery Life: Up to 14 Hours USB Charging Rotary Power/Volume Control for Ease of Use