Uniden UBCD396XT – 15 Years On

Fifteen years is a long time in the world of radio scanners. Digital modes have evolved, trunked radio systems have become more complex, and features that were once considered premium are now expected as standard. Yet despite all of these changes, the Uniden UBCD396XT remains one of the most capable and enjoyable scanners I have ever used.

In many ways, the UBCD396XT proves that a good scanner design can stand the test of time.

Still Has a Place in the Scanning Hobby

The scanner market has changed significantly since the UBCD396XT was released, but that doesn't mean it has become obsolete. Far from it.

For hobbyists interested in monitoring conventional VHF and UHF communications, searching for new signals, or simply enjoying the art of radio scanning, the 396XT remains a highly relevant receiver. While newer scanners offer additional digital modes and advanced features, the core scanning experience provided by the 396XT is still outstanding.

Outstanding VHF and UHF Performance

One area where the UBCD396XT continues to shine is receiver performance.

Its sensitivity on VHF and UHF is excellent, allowing weak signals to be received clearly and consistently. The radio has a reputation for hearing signals that some newer scanners struggle with, particularly when searching large sections of spectrum.

For those who enjoy hunting new frequencies, identifying unknown users, or monitoring distant stations during favourable conditions, the 396XT remains a formidable tool.

Even after fifteen years, it is difficult to find a handheld scanner that offers a significantly better overall VHF/UHF listening experience.

Fast Scanning and Searching

Speed is another area where the UBCD396XT excels.

The radio moves quickly through systems, channels, and search ranges, making it highly effective when monitoring busy bands or searching for new activity.

Many modern scanners have added features that come at the expense of responsiveness. The 396XT feels direct and efficient. Press a button and it responds immediately. Start a search and it gets to work without hesitation.

For many hobbyists, this speed is one of the reasons the radio remains a favourite.

The Features It Doesn't Have

Of course, no review would be complete without acknowledging the scanner's limitations.

The UBCD396XT was designed before several modern digital standards became widespread. As a result, it does not support:

• P25 Phase 2
• DMR
• NXDN

For listeners whose local services use these modes, a newer scanner will be necessary.

The radio also lacks a built-in recording function, something that has become increasingly common on modern scanners. Recording can still be achieved using external equipment, but it is not as convenient as the integrated solutions available today.

A Near-Perfect Portable Size

The physical design of the UBCD396XT remains one of its greatest strengths.

It is compact enough to carry comfortably all day, yet large enough to operate easily in the field. The radio feels solid, well-balanced, and purpose-built.

Many newer scanners have grown larger and heavier as additional features have been added. The 396XT strikes an excellent balance between portability and usability.

Whether used at home, in the car, or while travelling, it remains a pleasure to carry and operate.

It Just Works

Perhaps the greatest compliment that can be paid to the UBCD396XT is simply this:

It just works.

The radio is reliable, predictable, and effective. It turns on, scans quickly, receives well, and gets out of the way. There are no complicated upgrade paths, paid digital keys, or feature activations to worry about.

For many enthusiasts, that simplicity is refreshing.

Final Thoughts

Fifteen years after its release, the Uniden UBCD396XT remains one of the best handheld scanners ever produced.

Yes, it lacks modern digital modes such as P25 Phase 2, DMR, and NXDN. Yes, there is no built-in recorder. But when it comes to core scanning performance—especially on VHF and UHF—it continues to impress.

Its excellent receiver performance, fast scanning and searching capabilities, compact size, and dependable operation ensure that it still deserves a place in the radio hobby.

In an era where technology often becomes obsolete within a few years, the UBCD396XT stands as proof that great engineering never goes out of style.

Retro Review - Icom RX7

This is my review of the Icom RX7 wideband handheld receiver which is Icom’s latest handheld receiver to hit the market.

When I first started reading about it a few months ago I was interested to read that Icom had finally fixed some of the issues that had bugged me with previous radios I had owned from them such as the R5, R20 and R1500 which were all good radios but lacked some of the basic features I felt a wideband receiver should have such as a decent scan / search speed, easy bank linking for scanning and searching, simple memory bank / channel management and an easy to understand user interface.

My reason for buying the RX7 was twofold, first I was looking for a good handheld radio that had a proper VFO, decent scan / search speed and was small in size; the second reason was that I just love new toys and after a less then happy time with the Yaesu VR500 I was hoping the RX7 would be a radio I would be happy with.

This review is not “technical” but simply some comments and other things I have noticed about it and how it works for me, I am not trying to sell it to you or tell you not to buy one but simply share what I have found and like / dislike about it.

The first thing you notice about the RX7 when you see it is that it is white on the front and grey on the back and sides, this makes it stand out from other scanners that are normally black or grey, the size of it is fairly small given it has a good size display and a full keypad, as it is so slim it can slip in to a pocket easily.

Using the radio in VFO mode has shown it to work very well, frequencies can be typed from the keypad or changed via the top VFO knob, things like turning steps, mode and other options are set from a menu which helps keep the keypad and display simple to use and understand, please take note that this radio is like most things these days and menu driven with many different options and levels depending what you are trying to do, even for somebody like me who works in IT technical support and has had a number of radios over years it took me some time to get used to this way of doing things, the manual explains it fairly well but the best way to learn is to play around with the radio and try new things.

The single biggest change from other Icom radios and most scanners in general is the way the memory is set out, think of it like the way the Uniden 396T/996T is done, add some extra steps / options and that is about the level this is at. Instead of banks you have Category’s Groups and Channels. Here is a quick rundown on how I have mine programmed which will help make it easier to understand.

First you have a Category (000 services in my case) which you setup, then you make a Group (TAS Fire) and inside this you add the frequencies (79.0375MHz as an example) with an alpha tag, CTCSS tone, Mode, Turning step, ATT, stop beep and VSC settings if you want.

Here is how I have mine setup:

000 SERVICES

- TAS FIRE

- AMBULANCE

- SES

AIRPORT

- ATC

- BUSINESS AIRBAND

UHF CB

- UHF CB

2WAY GENERAL

- RADIO

As you can see above every category must have at least 1 group under it but you can have up to 26 categories each with 100 groups and each group can have 100 channels so that gives you lots of choices as far as how to have your memories setup. Using my setup above I can scan all the categories, 1 category or a mix, I can even just scan the TAS FIRE group if I want to, for somebody like me who likes to listen to everything but also at times narrow down to a single group of users this setup works well.

The only issue I have found is that as you had to add the frequencies to the right category / group as you program them it slows down the process a bit but I think it is well worth it for the flexibility you get from having it setup like this.

After programming a couple of hundred frequencies in and scanning them for a few hours I can report I have found no issues with lock up or overload even from my location which is close to the West Launceston radio towers, line of sight to Mt Barrow and close to the CBD; I am planning on testing it at Freeland’s lookout soon which will see how it performs in a “dirty” RF location. The scan speed seems to be in excess of 50 channels per second which is a great improvement on previous Icom radios.

Searching of frequency ranges is well supported, Icom have programmed some common one’s for you but you can also edit your own and link these which has always been something I have had issues with on Icom radios, it is good to see this has now been fixed and works really well, the search speed seems to be around 50 steps a second for 25KHz steps in the UHF band which is also very nice.

Earlier today I did some testing of the search auto write which is a feature I have used quite a bit in the past on Uniden radios and I can report this also works well which is a first for me to get working on an Icom radio.

Battery life is good from the 1100mAh battery and as I purchased the optional battery case for 3 AA cells this has improved it even more.

Overall I am very happy with the RX7 and it is a very nice radio which Icom have made more like a normal “scanner” but also with the VFO and other “advanced” features.

I am very pleased with this radio and if you don’t need trunking or APCO25 digital then this is the radio to get.

Here are some good / bad points I have found with it:

Pros:

+ Fast scan / search speed.

+ Very nice clear audio from both the speaker / ear phones even if it is a little quiet at times.

+ Good physical size and fits well in a pocket.

+ Memory / search linking that works.

+ Well designed memory layout if hard to understand at first.

+ It seems quite sensitive and does not overload / have many birdies like some other radios I have used.

+ Major fun factor and many options to play around with.

Cons:

- Delay is set on a radio wide basis not per channel which is a pain.

- The CTCSS tone decode feature is painful to setup and VERY slow to decode the correct tone.

- The keypad does not have a backlight like the display so night time use is hard until you learn all the keys by touch.

- Voice squelch seems to work well but does cut off the first bit of each over while it checks if the signal is voice and it should pass it to the speaker.

Retro Review - GME RX1300

Day 1:

Tonight I have had my first chance to setup and use my new GME RX1300 scanner receiver which I ordered last week.

First let’s look at what you get with it as standard when you purchase it.

- RX1300 unit

- Antenna

- 1900mAh Lithium Ion Rechargeable Battery

- Ear phones

- Charger cradle and power supply

- Lanyard Strap.

All of these are fairly standard type devices, the battery takes around 12 hours to charge from empty to full and it is uncommon to find a desktop type charger rather than a more normal wall charger of a radio in this price bracket. Having said that it is possible to charge the RX1300 using just the wall charger if the charging cradle is not available to you. The aerial is an SMA type which is solid on the bottom half and semi flexible on the top half. The only thing missing from the RX1300 is a belt clip which I feel is a slight let down but as it is so small it will mostly be carried in a pocket.

The RX1300 unit is very well built and feels very solid in the hand, it has a much better feel then the low end Uniden scanners or almost any other scanner I have ever used / owned. It is around 75% the height of the UBC93XLT, 90% of the width and about 90% the depth. The weight is much the same with the RX1300 being slightly heavier. Both the LCD and keypad light ups after each key press in a nice yellow glow.

So far I have not had much time to do a huge amount of testing with it; I have worked out the menu system which is slightly confusing until you understand the logical of it then it makes a lot of sense and is easy to use. I have programmed in around 90 VHF / UHF channels and the 40 UHF CB channels, this took around ¾ of an hour which I think is fairly good given I had not used a radio of this type before with the method of storing frequencies. After programming these frequencies (the VHF / UHF frequencies in to bank 00 and UHF CB in to bank 01) I found what I see as the single biggest issue with radio, you cannot scan more than a single 100 channel bank at a time, this means you can’t program different users in to each bank and then scan a mix of them. What you can do is press the two digit code for each bank that activates that bank to scan but that turns off the other bank for scanning. As an example if I press 00 it will scan my 90 VHF / UHF channels in bank 00 but if I press 01 it will then scan the 40 UHF CB channels I programmed in bank 01 instead. Other than that I am happy with the scanning side of things, the speed is around 20 channels per second which is fine for me. 

The ability of the RX1300 to pick up signals seems really good from my limited testing I could hear casino security on 467.475MHz with just the standard aerial which is a good effort for where I live, none of my others radio even hear this at all except on an external aerial. I can also report that not a single frequency in either of these two banks has any issues with birdies or other signals locking them up.

I searched the following banks with a list of how many frequencies had problems:

70-80 MHz: 3

118-137MHz: 12

144-148MHz: 0

156-174MHz: 5

462-512MHz: 7

I think this is fairly good, much better then what my other scanner do and right up with the best I have seen in the past for searching.

Overall I am fairly happy with it so far, the lack of a belt clip is a pain and the single bank scanning seems a bit strange but for general scanning it seems to be spot on.

I still have a few features to test such as memory auto write and tone coding, once I have tested these features and done some more general testing in different locations I will add to this review.

 

Retro Review - Uniden BCD396T (USA Model)

A retro review of the Uniden BCD396T (USA Model), I wrote this in 2006.

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Uniden BCD 396T Digital Hand Held Scanner
Here’s my review of the new Uniden BCD 396T scanner.
Some of the more important specs:
25 MHz – 1300 MHz coverage
AM / FM/ NFM /WFM Modes
Steps from 5 kHz to 100 kHz
6600 channels – up to 400 systems
100 quick keys to access systems
Trunk Tracker IV operation
APCO 25 Digital decoding
Close Call
CTCSS / DCS decoding
Channel Alert tones
Text Tags
10 Custom search ranges with Auto Store.
PC Control / Programming

Here’s what you get with it out of the box:
Uniden BCD 396T unit:
This is a mid sized unit and is built quite well, it runs off 3 x AA cells and these seem to last quite a while.

Belt Clip:
This is a very professional setup and comes in two parts, one is attached to the back on the radio and clips on the second part on your belt, and this means the unit has to be turned upside down to get it off, reducing the chance of it falling off by accident.

SMA Aerial

AC Adaptor / 3x 2300Mah AA Cells
This is a 6v 800Ma unit and charges the 3 AA cells in 16 hours; it also powers the radio while it is charging.

Programming Cable
This allows the radio to be programmed via a PC; the software is a free download off the Uniden website and works very well.

Manual
This is a must have item as this is a very complex unit to set up and use.

Programming the unit:
Before using this unit you MUST have an understanding of how it is setup as it is very different to all other Uniden scanners.
You have a pool of 6600 channels by default, instead of banks you have systems which you can have to 400 of.

As you build each system it takes the channels from the pool and assigns them to the system, this means that to program the EDACS Mt Barrow site in to system 1 you take the 9 channels from the pool and add them to system 1, you can them add the 11 channels to build the system for EDACS West Launceston to system 2, this means that you are not wasting channels like you do on a Uniden 780 where you use 1 bank of 50 channels for a EDACS site with only 11 channels.
As you can have up to 400 system’s setup, you could have EVERY EDACS site in Tasmania programmed and still have over 6000 channels spare to put in your normal two way stuff like the Air band or UHF CB, with the UHF CB you could build a system with only the 40 channels required for it, by doing this you don’t waste any channels.

How I have my bcd396t setup is like this:
System 1 – 000 Services
System 2 – Air band / HAM Radio
System 3 – Business Band
System 4 – UHF CB
System 8 – EDACS Mt Barrow
System 9 – EDACS West Launceston

Using it for the last few days after programming it via my pc shows that it has every feature you could want in a handheld and that so far it seems to work very well both on the EDACS trunking and on normal vhf / uhf channels.

Having 6600 channels and custom system sizes allows a great level of freedom to set it up just how you want.

The only problem with a unit like this is that is VERY COMPLEX to setup and use, if you find a Uniden 245 or 780 hard to program / use , this will really test you out as it has so many feature and options you need to have a good understanding of it.

Loggings - Hobart - 04/07/2026

Frequency: 118.1

Name: TOWER-HOBART

Service: AirBand

Notes:

Frequency: 125.55

Name: ATC HOBART

Service: AirBand

Notes:

Frequency: 128.45

Name: HOBART ATIS

Service: Airband

Notes:

Frequency: 146.7

Name: VK7RHT 2M

Service: Amateur Radio

Notes:

Frequency: 439.75

Name: 70CM HAM HOBART

Service: Amateur Radio

Notes:

Frequency: 454.175

Name: METRO (TX)

Service: Business

Notes:

Frequency: 464.175

Name: METRO HOBART

Service: Business

Notes:

Frequency: 464.225

Name: METRO HOBART

Service: Business

Notes: 

RFScanMate – A Radio Scanning Database and Logging Program

Introducing RFScanMate: A Modern Radio Scanning Database and Logging Solution

Radio scanning has always been about discovery. Whether you're monitoring amateur radio, aviation, marine communications, business radio networks, or modern digital systems, keeping accurate records of what you've heard is an essential part of the hobby.

That's where RFScanMate comes in.

RFScanMate is a modern radio scanning database and logging application designed to help radio enthusiasts organise, search, and analyse their monitoring activity. Built with simplicity and efficiency in mind, RFScanMate provides a powerful platform for maintaining frequency databases while making it easy to record and review radio traffic.

Why RFScanMate?

Many radio enthusiasts rely on spreadsheets, notebooks, or ageing software to track their monitoring activities. While these methods work, they often become difficult to manage as databases grow larger and more complex.

RFScanMate aims to solve these challenges by providing:

• Centralised frequency management

• Fast and efficient logging

• Advanced search and filtering

• Cross-platform accessibility

• Simple data import and export

• Modern user-friendly interface

Whether you're a casual listener or a dedicated monitoring enthusiast, RFScanMate helps keep your radio intelligence organised.

Key Features

Comprehensive Frequency Database

Store detailed information about frequencies and channels, including:

• Frequency

• Service

• Mode

• Band

• Callsigns

• Site details

• Notes and observations

This allows users to build a detailed and searchable database tailored to their local area and interests.

Logging Made Easy

RFScanMate makes it simple to record monitoring activity as it happens.

Users can quickly capture:

• Date and time

• Frequency

• Talkgroup

• Callsign

• Signal information

• Location

• Monitoring notes

Over time, these logs become a valuable historical record that can be used for research, identification, and trend analysis.

Powerful Search Tools

Finding information should never be difficult.

RFScanMate includes powerful filtering and search capabilities that allow users to quickly locate:

• Specific frequencies

• Callsigns

• Talkgroups

• Services

• Locations

• Historical monitoring records

This makes large databases manageable and useful.

Built for Modern Radio Monitoring

The radio landscape continues to evolve. From traditional analogue systems to digital radio networks, hobbyists need tools that can adapt.

RFScanMate is designed to support a wide range of monitoring interests, including:

• Amateur Radio

• Aviation

• Marine Radio

• Business Radio

• UHF CB

• Digital Trunked Networks

• Community Services

• Utility Communications

Developed by Radio Enthusiasts

RFScanMate is being developed with real-world radio monitoring in mind.

Rather than focusing on unnecessary complexity, the goal is to create software that radio enthusiasts will actually use every day. The emphasis is on speed, reliability, and practical features that support the monitoring hobby.

Every feature is driven by real monitoring requirements, making RFScanMate a tool designed by enthusiasts, for enthusiasts.

Looking Ahead

Future development plans include:

• Enhanced database management

• Mapping and location features

• Advanced reporting tools

• Additional import and export options

• Improved mobile compatibility

• Expanded analysis capabilities

The vision is to make RFScanMate a complete monitoring companion for both home and portable radio operations.

Join the Journey

Radio monitoring remains one of the most rewarding and accessible technical hobbies available today. As communications systems continue to change, having reliable tools to organise and analyse monitoring activity becomes increasingly important.

RFScanMate is being built to meet that need.

Whether you're tracking local repeaters, logging DX contacts, identifying new frequencies, or building a comprehensive regional database, RFScanMate aims to become an essential part of your monitoring toolkit.

Stay tuned as development continues and new features are introduced. The future of radio logging and database management is taking shape with RFScanMate.

Download Link - https://drive.google.com/file/d/1vx277_UM9XYtvc4br95dO7ZXFzG6SY2B/view?usp=sharing

Monday Night - Monitoring the Bands

 

Portable UHF Band Monitoring Kit - May 2026

There is something satisfying about having a complete monitoring setup packed into a single rugged case, ready to grab at a moment’s notice. Over the years I have experimented with radio bags, camera cases, toolboxes, and hard cases trying to find the right balance between portability, protection, and practicality for UHF monitoring. This latest setup is probably the closest I have come to the “ideal” portable kit.

The Goal

The idea behind this kit is simple:

Compact and portable

Fast deployment

Protected equipment

Enough flexibility for serious UHF monitoring

Minimal clutter

Whether I am doing casual monitoring around Launceston, logging unknown users, checking repeater activity, or simply exploring the band while out and about, this kit gives me everything I need in one place.

The Case

The foundation of the setup is a foam-lined hard case. After trying softer radio bags and tool cases over the years, I have found hard cases work best for portable radio operations. The foam insert keeps everything secure and prevents radios and accessories from sliding around during transport. It also means I can quickly see if anything is missing before leaving home. The egg-shell foam in the lid helps protect antennas and controls from pressure damage.

The Radios

GME XRS Handheld: The GME XRS-660 handheld UHF CB is the centrepiece of the monitoring kit. From a monitoring perspective, the XRS series is extremely capable:

Excellent RF performance

Fast scanning

Zone support

GPS capability

Audio recording

Bluetooth app programming

Up-scan skip feature

RX-only channel support

One feature I particularly like is the ability to separate monitoring channels into dedicated scan groups. For example:

Scan A = RX-only monitoring frequencies

Scan B = RX-only and UHF CB channels

Scan C = standard UHF CB channels

This makes it easy to move between casual listening and more serious monitoring work.

The audio recorder is another surprisingly useful feature. Being able to replay transmissions later helps when identifying users, callsigns, or locations.

Baofeng UV-17L: This second radio acts as either:

A dedicated monitoring receiver

Backup communications radio

Experimental receiver

Comparison receiver

Having two radios available is extremely useful when tracking activity across multiple channels or comparing signal strength and audio quality between radios.

Dual-radio monitoring also allows one radio to remain locked onto a busy frequency while the other continues scanning.

Charging and Power

A portable kit is only useful if everything stays charged. Inside the case are:

Desktop charger

Power supply

USB charging leads

Keeping all charging accessories permanently inside the kit means there is less chance of forgetting something important before a trip.

Accessories

Multitool: A multitool is one of those items that constantly proves useful during radio work:

Antenna adjustments, Opening battery compartments, Tightening connectors, General repairs, Cutting cable ties. It earns its place in the kit every single time.

Cable Container: The small container holds:

USB leads, Adapters, Spare connectors, Small accessories.

Using a separate container stops cables from tangling throughout the case and keeps everything organised.

Why Portable Monitoring Matters

Portable UHF monitoring changes the experience completely compared to monitoring from home.

Being mobile allows you to:

Discover new users

Identify local business channels

Map repeater coverage

Investigate interference

Monitor temporary event channels

Explore propagation conditions

Log unidentified frequencies

Some of the best discoveries happen while simply driving around or stopping at random locations with a handheld radio.

Practical Lessons Learned

After years of experimenting with portable radio setups, a few things stand out:

Keep It Simple: The more complicated the kit becomes, the less likely it is to be used regularly.

Protect the Radios: Portable radios take a surprising amount of abuse. A good case dramatically extends their lifespan.

Organisation Matters: Dedicated spots for every item make setup and pack-up much faster.

Two Radios Are Better Than One: Once you start using dual receivers for monitoring, it becomes difficult to go back to a single radio.

Final Thoughts

This portable UHF monitoring kit represents years of refining what actually works in the field. It is compact, practical, rugged, and flexible enough for everything from casual monitoring to serious UHF exploration. The best part is that it encourages experimentation. Grab the case, head somewhere interesting, start scanning, and see what turns up.

That is half the fun of radio monitoring.

Review - GME XRS-660 XRS™ Connect Handheld UHF CB Radio

The GME XRS Connect XRS-660 HandHeld UHF CB Radio is one of the more capable modern handheld UHF radios available for people who monitor known frequencies, not just the standard 80 UHF CB channels. While marketed primarily as a touring and 4WD radio, it also works surprisingly well as a dedicated UHF monitoring receiver thanks to its strong RF performance, flexible scanning options, and advanced software features.

General Overview

The XRS-660 is a 5-watt Australian-made handheld UHF CB radio with a large feature set built around the GME XRS platform. It combines traditional UHF CB operation with app-based programming, GPS functions, advanced scanning, and audio recording features.

For general users, it is a solid touring radio. For radio enthusiasts and UHF monitors, however, the real value is in how configurable the receiver and scan system are. It can be set up more like a commercial scanning radio than a simple CB.

The receive audio quality is excellent, the RF sensitivity is strong, and the radio performs very well in weak signal areas. Even in busy RF environments, the receiver remains clear and usable.

Features

Some of the main features include:

• 5W UHF CB operation
• Large easy-to-read display
• Bluetooth connectivity
• Android and iOS programming
• GPS location support
• Scan zones
• Multiple scan modes
• Audio recording
• Selcall support
• CTCSS/DCS support
• Firmware updates via app
• External speaker and accessory support

The radio feels more like a hybrid between a commercial UHF and a modern connected radio than a traditional CB.

Features That Make It Excellent for UHF Monitoring

Audio Recorder

One of the standout features for monitoring is the built-in audio recorder. This is incredibly useful for logging activity, replaying weak or fast transmissions, and checking unidentified signals later.

For monitoring known channels or documenting UHF activity, the recorder becomes one of the most valuable features of the radio.

Zones

Zones are where the XRS-660 really shines for monitoring.

Instead of treating the radio as just 80 UHF CB channels, you can organise frequencies into logical groups. This makes the radio far more practical for serious UHF listening.

For example:

• Scan A = UHF RX Only
• Scan B = UHF RX + UHF CB
• Scan C = UHF CB Only

This allows quick switching between different monitoring styles without constantly reprogramming channels.

Once configured properly, the zone system is extremely powerful.

Up Scan Skip

A surprisingly useful feature is the temporary scan skip.

When scanning, pressing the up button skips the current frequency for roughly 30 seconds. This is excellent for avoiding long conversations or noisy channels while continuing to monitor the rest of the scan list.

Small feature, but very useful in real-world monitoring.

RF Performance

The RF performance is excellent.

The receiver is sensitive, clear, and handles weak signals very well. Compared to many basic CB radios, the XRS-660 feels much closer to commercial-grade equipment in receive quality.

For monitoring local business, transport, farm, event, or other licensed UHF users, the radio performs extremely well.

Android / iOS Programming

The app-based programming is one of the biggest advantages of the XRS platform.

Programming large channel lists manually on a radio keypad is normally painful, but using the app makes adding frequencies, zones, names, and scan lists much easier.

For monitoring enthusiasts who constantly update frequency lists, this is a major benefit.

GPS Features

The built-in GPS functions are also useful for monitoring.

Being able to associate received communications with locations is excellent for logging and identifying repeaters, mobile users, or coverage areas.

For people who travel while monitoring, this adds another layer of usefulness beyond basic CB functionality.

Multiple Scan Modes

The flexible scan system is one of the radio’s best features.

Being able to maintain different scan profiles for different purposes makes the radio much more adaptable than standard UHF CB radios.

Instead of one generic scan mode, you can build specialised monitoring setups depending on what you want to listen to.

Issues and Weak Points

Android Software Bugs

The biggest issue is the Android programming software.

On multiple Android devices, adding a frequency sometimes overwrites another existing frequency unexpectedly. This can become frustrating when maintaining larger channel databases.

The radio itself is stable, but the Android app still feels buggy in places.

Proprietary Accessory Connector

The radio uses a custom accessory connector, which limits compatibility with standard audio accessories. You cannot simply plug in normal earphones or generic accessories without adapters or specific compatible equipment.

For monitoring users who often use earpieces or recording devices, this can be annoying.

Complexity

The XRS-660 is powerful, but not simple.

To fully utilise zones, scan modes, receive-only channels, and advanced configuration options takes time and experimentation.

People expecting a basic “turn on and use” CB may find it overwhelming initially.

Keypad Programming

Programming directly from the radio keypad is possible, but involves a large number of button presses and menu navigation.

For occasional changes it is acceptable, but for serious monitoring setups the app is almost essential.

Overall

The GME XRS Connect XRS-660 UHF CB Radio works exceptionally well as a UHF monitoring radio, especially for users monitoring known frequencies rather than searching unknown spectrum activity.

Its excellent receive performance, flexible zones, advanced scanning, audio recording, and GPS features make it far more capable than a standard CB radio for monitoring purposes.

The biggest drawbacks are the buggy Android software, proprietary accessory connector, and the learning curve required to fully understand the programming system.

Despite those issues, once configured properly, the XRS-660 becomes an extremely capable and enjoyable UHF monitoring platform with features rarely found in consumer UHF radios.

UHF Band Analysis (400–512 MHz) - A Focused Spectrum Mapping Initiative

📡 Introduction

The 400–512 MHz slice of the UHF spectrum represents one of the most densely utilized and operationally critical RF ranges in modern communications. This band includes:

• UHF CB (Citizen Band)
• Commercial and business radio systems
• Public safety allocations (TASGRN)
• Amateur radio (70 cm band overlap)
• Telemetry and digital data systems

With this post, RadioFreakDB introduces a refined focus:

To systematically document, analyze, and catalogue every observable signal within the 400–512 MHz range.

Instead of broad-spectrum monitoring, this effort concentrates on a high-value operational band, enabling deeper insights and more precise classification.

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🎯 Why Focus on 400–512 MHz?

1. High-Density Spectrum Usage

This frequency segment is heavily populated due to its ideal characteristics:

• Reliable short-to-medium range propagation
• Strong building penetration
• Efficient antenna sizing

As a result:

• Frequencies are reused frequently
• Multiple services overlap geographically
• Digital and analog coexist in complex patterns

Key takeaway: This band offers one of the clearest views into real-world spectrum congestion and coexistence.

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2. Critical Communication Services

The 400–512 MHz range supports essential services:

Category	Examples
UHF CB	476–477 MHz (AU allocation)
Business Radio	Logistics, retail, construction
Public Safety	TASGRN
Amateur Radio	430–450 MHz (70 cm band)
Digital Systems	DMR, P25, NXDN, telemetry

Focusing on this range allows:

• Cross-service comparisons
• Detection of operational patterns
• Identification of under-documented users

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3. Rich Digital Signal Environment

Modern usage in this band shows:

• Increasing dominance of digital radio standards
• Continuous control channels and burst transmissions
• Hidden infrastructure supporting logistics and monitoring systems

Many signals:

• Are not listed in public databases
• Remain unidentified without structured logging

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🗺️ Where Monitoring Takes Place

Monitoring Environments

To ensure accurate capture of activity, monitoring spans:

• Urban high-density RF environments
• Suburban mixed-use zones
• Elevated or line-of-sight observation points

This enables:

• Detection of both local and distant transmitters
• Differentiation between simplex and repeater systems

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Frequency Scope

The project targets continuous scanning across:

400 MHz → 512 MHz

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🔍 What Gets Documented

Every detected signal is captured with structured metadata to support analysis and long-term tracking.

Core Data Fields

• Frequency (MHz)
• Band classification
• Signal type (Analog / Digital / Unknown)
• Signal strength (RSSI)
• Timestamp and duration
• Modulation (if identifiable)
• Activity patterns and recurrence

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📻 Signal Categories Within 400–512 MHz

1. UHF CB (Citizen Band)

• Located at 476–477 MHz (Australia)
• Narrowband FM voice channels
• High activity from:
  • Transport operators
  • 4WD/off-road groups

Observation: Predictable channel usage with periodic peak activity.

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2. Business & Commercial Radio

Covers a wide range of licensed users:

• Warehousing and logistics
• Construction and security
• Retail and event coordination

Typical characteristics:

• Analog FM still present
• Rapid shift to DMR and NXDN digital systems
• Frequent repeater use

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3. Amateur Radio (70 cm Band)

• 430–450 MHz range
• Mixed usage:
  • Repeaters (voice and digital)
  • Simplex contacts
  • Experimental digital modes

Acts as:

• A testing ground for new technologies
• A predictable reference segment within the band

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4. Data & Telemetry Systems

Includes:

• SCADA networks
• Remote monitoring systems
• Control channels for trunked systems

Signal traits:

• Burst transmissions
• Narrowband or structured digital carriers
• Often continuous low-duty-cycle activity

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5. Unknown / Unidentified Signals

A key focus area:

• Unclassified digital bursts
• Non-standard modulation patterns
• Intermittent or irregular transmissions

These are:

• Logged for pattern analysis
• Flagged for future identification
• Correlated across time and location

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📊 Initial Results & Observations

1. Persistent Background Activity

Even unused-looking frequencies often reveal:

• Short telemetry bursts
• Low-power digital carriers
• Control signals

Conclusion: True inactivity in this band is rare.

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2. Digital Dominance Increasing

Across 400–512 MHz:

• Digital voice systems are expanding
• Analog FM is gradually declining in commercial use
• Mixed-mode coexistence remains common

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3. Frequency Reuse Is Widespread

Identical frequencies appear:

• Across different industries
• In separate geographic regions

This demonstrates:

• Efficient but complex spectrum allocation
• Increased potential for interference

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4. Hidden Infrastructure

Monitoring reveals:

• Low-power repeaters not publicly listed
• Fixed telemetry nodes
• Persistent control channels

These systems form a largely invisible backbone of RF activity.

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RadioFreakDB Integration

All captured data feeds into RadioFreakDB, enabling:

• Structured logging and tagging
• Frequency activity tracking over time
• Exportable datasets for external analysis

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📤 Data Export Strategy

Regular outputs include:

• Daily activity summaries
• Per-frequency usage logs
• Unknown signal watchlists
• Sub-band utilization reports

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🚀 Future Enhancements

Planned improvements include:

• Automated modulation detection
• Machine learning-assisted classification
• Signal fingerprinting and clustering
• Heatmaps of band usage
• Real-time monitoring dashboards

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📢 Final Thoughts

The 400–512 MHz UHF segment provides a uniquely dense and diverse RF environment, making it ideal for structured spectrum analysis.

By narrowing focus to this range, RadioFreakDB can deliver:

• Higher-resolution insights
• Better signal classification accuracy
• More meaningful long-term trends

This is not just scanning — it’s building a living, evolving dataset of one of the most important radio bands in use today.

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📡 Upcoming posts will explore:

• Deep dives into unidentified signals
• Digital mode recognition techniques
• Regional usage comparisons
• Automated scanning pipelines within 400–512 MHz

Stealth Radio Sling Bag – A Practical Portable Setup

I recently picked up this understated little sling bag on clearance for $19 (down from $30), and it’s quickly become one of those “why didn’t I do this sooner?” upgrades to my portable radio setup.

Why I Needed It
With me doing more portable sessions lately, I needed something simple and practical to carry a couple of radios, antennas, and a few accessories. Previously, it was a mix of cases and juggling gear in my hands, not ideal, especially when moving around.

The big driver here is mobility. My knees haven’t been great, and having both hands free while walking, whether it’s for balance, climbing, or just managing uneven ground, is genuinely important. A sling bag keeps everything close, accessible, and out of the way.

The Setup Inside
Inside, I added a plastic container to give the radios some structure and protection. Without it, everything would just knock around, not great for gear that isn’t exactly cheap.

That said, this part didn’t go smoothly…

The “Modification Phase” (a.k.a. making it fit)
Because the bag and the container came from different shops, they didn’t exactly agree with each other. The container was just a bit too thick, and the zip wouldn’t close.

So… out came the hacksaw.

I cut the container down and reassembled it to about two-thirds of its original thickness. A few screws anchor it to the middle timber divider, and some tape holds the structure together. It’s not pretty, but it’s solid, nobody will see it once it is in the bag and most importantly, it works.

This little DIY hack turned what could have been a failed idea into a really functional setup.

How It Performs
After using it, I can say it’s ticking all the boxes:

• Hands-free carry: huge win for mobility and stability
• Low profile: doesn’t scream “expensive gear inside”
• Compact but practical: fits radios, antennas, and accessories
• Extra space: room for a snack, phone, and keys
• Encourages use: makes it easy to just grab and go

And that last point is probably the biggest one. Because it’s so easy to carry, I’m taking my radios out more often, which naturally leads to discovering new signals and monitoring opportunities.

Final Thoughts
This wasn’t about buying the perfect bag, it was about building something that works for how I actually operate. A cheap sling bag, a modified container, and a bit of problem-solving has resulted in a setup that’s practical, discreet, and genuinely useful.

Sometimes the best solutions aren’t off-the-shelf, they’re the ones you tweak to fit your own way of doing things.

The start of the build process.

About the point where I had worked out that it was too think and the hacksaw came out.

Added some bubblewrap and testing the fit for both radios. I needed it to be snug but not too tight.

With the middle divider in and getting the bubblewrap in place.

After adding the tape to help hold it all together. I did have to add some more tape inside to stop the bubblewrap moving when I took the radios in and out.

Top view, with everything in place.

Just a little bit of duct tape...

The bag from the front, looking low profile.

Top access to the radios and aerials.

Middle Pocket - Wire aerial, USB cables.

Multi-tool hidden in the pocket.

Battery Charger for AA batteries.

Ear Phones in the front pocket, also space for my phone and keys.