Review – BTech DMR-6X2

by John ‘Miklor’  K3NXU

Several Dual Band DMR handhelds have been introduced into the market in the past few months. Having owned most of them, I would have to place this one toward the very top of the list. The DMR-6X2 is both VHF and UHF, Tier II  DMR digital as well as FM analog with most features geared strictly toward ham radio use.

Important Note:  The BTech DMR-6X2 is Not made by Baofeng. (see note below).  That being said, let’s see what’s…

In the Box
Included with the radio are the:
–  Two (2)  Li-Ion Batteries   (2100 and 3100 mAh)
–  Two (2)  Belt clips
–  Hand Strap
–  37 page User Guide – English
–  Charger base & AC adapter
–  Antenna – 6.25″ (16cm)
–  Programming Cable
–  Earphone / Microphone

General Description
–   DMR / FM
–   VHF / UHF Dual Band
–   Size:  5.1 x 2.4 x 1.5″   (129 x 61 x 39mm)
–   Weight:    9.9oz   (282g)  w/ant & 2100 mAh battery
–   Weight:   10.8oz  (306g)  w/ant & 3100 mAh battery
–   136-174   400-480 MHz
–   CTCSS/DCS  DTMF/2TONE/5TONE
–   Digital Simplex Repeater
–   <1.0w / 6.0w transmit
–   4000 channel
–   250 Zones (up to 250 channels per zone)
–   10,000 contacts
–   150,000 DMR Database Contacts
–   Part 90 compliant – 2AGND-DMR6X2
–   N0GSG Contact Manager Compatible

Basic Description  (additional features)
The heart of the 6X2 is the proven Anytone D868. Under contract with Anytone, BTech had several addition features exclusively added to the 6X2.

Some of the additional features exclusive to the 6X2 include:
–  Multiple Scan Groups
–  Priority Scan
–  Change TG via Keypad (Adhoc) with Unlimited Hold Timer
–  Display Color Options
–  Digital Simplex Repeater
–  Analog Squelch Level Adjustment
–  Start Up Code Plug Compatibility
–  Display Hold

– Multiple Scan Groups in Same Channel
The 6X2 allows multiple scan lists to be entered  per channel. You are no longer limited to one scan group entry per channel. The scan groups can include and mix of DMR or analog channels.

– Priority Scan
When developing a scan list, up to 2 channels can be assigned as priority. This allows the priority channels to be interwoven in the scan list. As an example:
–  Channel 1
–  Priority Channel 1
–  Channel 2
–  Priority Channel 1
–  Channel 3
–  Priority Channel 1

– Change Group via Keypad (“Unlimited” hold timer)
This is specially nice when using a hot spot. By setting a key function to “Dial” or “Long Press 0”, and the Group Call Hold time to “Unlimited”, you can enter a Talk Group using the number pad and it will remain permanently or until the channel is changed. No longer is the hold time set in seconds or minutes.

– Display Color Options
There are two display color options available. They are White on Black background, and Black on a Powder Blue background. (shown below). They are selectable by either software or keypad menu.

– Analog Squelch Level Adjust
The analog squelch level can now be adjusted using one of the programmable keys.

– Start up Code Plug
To assist with start up, the software was written to initially accept an Anytone D868 code plug.  I’ve had a 868 since they first came out, and this was a huge time saver. Everything transferred and I was ready to play radio in minutes.
Note: Due to the extra features in the code plug, a 6X2 CP cannot be transferred back to a D868.

– Digital Simplex Repeater
Not to be confused with a standard repeater, this feature allows the DMR-6X2 to function as a Store and Forward Simplex Repeater. The 6X2 records a transmission and stores it in memory. Immediately after the incoming signal is dropped, the transmitter keys and re-transmits the recorded audio. The re-transmission can be either on the same or different frequency (not necessarily on the same band).

This feature allows the 6X2 to be used as a relay point during events such as marathons, races, etc. where a central relay method is needed and there is no local repeater.

– Display Hold
When a signal is received, the data image (name, call, location, etc) remains on the screen until the next signal is received rather than drop back to a standby screen. There is a Call End indicator at the bottom, but the data remains.

The Technical Side of the 6X2


The
Transmitter

The frequency range of the DMR-6X2 is both VHF 136-174 and UHF 400-480 MHz. Along with DMR, the radio also supports analog FM (Wideband and Narrowband)

The power levels hold pretty close to the specifications. There are four power levels with a high of 5.0W and a Turbo mode of 6.5W. I personally run mine in 5W mode. Turbo isn’t going to Make or Break the signal, but it helps the battery.

What I do like is the low power mode is less than 1W. I run a hotspot here and if the power was only 0.3W I would be happy.

My audio reports have been excellent both through a DMR hotspot and the local repeaters. There is a five level microphone gain parameter that allows you to select the microphone gain level that best suited for your voice. I use level 3 (mid-level) for a full smooth audio response. I tried level 5 and found the audio was way too hot.

Power levels are listed below and were taken using a calibrated Bird Termaline wattmeter.

Enclosure
The DMR-6X2 case has a good solid feel and weight, and fits the hand well.  It weighs in at  9.9oz   (282g) with the standard battery attached and 10.8oz (306g) with the high capacity battery. Battery removal requires a simple push of the release slide located at the top of the battery. No battery sliding or pushing is required.

I found the keypad buttons a bit larger than most with a lighted keypad layout of three across and four down. This puts the zero (0) at the bottom of the keypad where I believe it belongs. The PTT button requires only a light pressure that doesn’t tire the finger to press.


Antenna
The included dual band antenna is 6.25″ which is a fairly common size for a handheld. I found that there was a slight improvement of about 2db by using an NA-771.  The 771 is 10″ longer, so a difference would be expected, but I’ll probably stay with the stock antenna.



Receiver and Audio
The receiver sensitivity is very good on both digital and analog. I found the receive audio is amazing with wide and smooth frequency range.

The volume control range is adjustable with the software. Level 1 sets the full range of the volume control to a soft level, even at full volume. Level 8 sets the volume range to very loud at the top end. My preference is level 3 to 5 which is plenty loud, even for mobile operation.

Display
The radio has a two multi-color display options. The high contrast White on Black, and the softer is a Powder Blue with multi-color icons. The color is selectable via software or as a keypad menu option. The screen size is 1.1″ x 1.4″ with excellent resolution .

There are multiple sites where the current DMR User Database can be downloaded. There are various formats available allowing you to view name, call, location, user ID, license class, etc.

.
Software
Along with entering data in the conventional manner, the software allows you to import and export data to ‘csv’ files. Loading in a contact (TG) list, channel list, database, etc. is relatively simple.

I found being able to export to a ‘csv’ file has several advantages. I like having my channel list in sequence. With most software, you can only add new channels to the bottom of the list. Now I can sequence the list so it’s easy to view then load it back into the code plug.

Adding a new repeater can be done in minutes. I just cut and paste a copy of an existing repeater, change the frequencies, and load it back.

Note: The BTECH 6X2 can import a code plug (.rdt) from an Anytone D868UV directly. This is a great way to get your 6X2 on the air. Once loaded, however, due to the expanded parameters, the D868 is not capable of reading a 6X2 code plug.


CSV transfer Caution
Adding large amounts of data, updating and re-sequencing via CSV files is a major plus, but should always be done with Caution. For instance, Talk Group data must always be loaded before or at the same time as the Channel data. If not, improper data attachment may not occur.

Always backup your current code plug before modification.

Firmware
As additional features and future enhancements are developed, the radio can be updated to latest model. A firmware upgrades can be done with a Windows computer in about 5 minutes.

Note: The DMR-6X2 firmware is specific to this radio. It cannot be uploaded to a different model in hopes of adding new features.

Programming Cable
The DMR-6X2 comes with the necessary programming cable. The UART chip inside the radio, so the cable itself is straight through. There is no circuitry inside the cable itself. The driver will load automatically when the cable is attached.

For reference, although the cable appears to be the same as some that have the chip in the cable, those cables are not compatible.

 

The charger base requires a standard 12vdc wall wart (included). The LED on the front of the charger base is Red when charging, and Green when either fully charged or no radio in the cradle. The battery easily charges to full capacity with an overnight charge.

Battery and Charger
There are two batteries included with the 6X2, a 2100mAh and a high capacity 3100mAh. With battery save on, I can get 2 to 3 days out of the 3100mAh battery before needing a charge.

There are also USB charging cables available with output of 12V. These can also be used in place of the included Wall Wart.

Conclusion
If you think the BTECH DMR-6X2 very closely resembles a D868UV, you are correct, but as shown above, it is definitely not simply a rebadged Anytone. There are features and enhancements that set these two radios apart. I think BTECH was wise to wait for the bugs to be ironed out before introducing the 6X2 to the market.

If you’re waiting for this radio to drop in price, don’t hold your breath. Its features and performance make it well worth the price.

The obvious pros are the following:

–  True Tier II DMR
–  Same Band and Cross Band digital simplex repeater
–  Dual Band VHF/UHF operation
–  Multiple Scan Groups per Channel
–  Priority Scan
–  On the Fly Talk Group Entry
–  Built-in Voice Recorder
–  2TONE and  5TONE decoding
–  150K user database capacity
–  FCC Part 90 certified for commercial use
–  N0GSG Contact Manager Compatible

There are plenty of options geared more for hams than commercial use. It performs well and makes a nice addition to the ham shack.

Available from:    and    Amazon


For Clarification
BTech (BaofengTech) is not a division of Baofeng. They are an ODM that partners with OEM manufacturers to spec and build to their own requirements, whether from scratch (UV-5X3) or from an existing product. This 6X2 is an Anytone at heart with additional unique features found only in that model.

 

 

 

Here’s a comparison chart showing the major differences.
Click to enlarge.

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Review – SharkRF openSPOT

by John ‘Miklor’sharkopen-200
K3NXU


OK, so what is a hotspot?

A hotspot an interface that allows you to connect to a digital network directly without the need of an actual repeater. There are several variations of hotspots available. Some may require your PC or Raspberry Pi interface, but the SharkRF openSPOT is a small stand alone IP gateway that connects directly to your internet router via the Ethernet connection. No other equipment required.

The openSPOT was developed by two hams that not only understand what hams want, need, and enjoy, but know how to make it work with minimal setup. With features not found in other hotspots, the bottom line is, they did it right.

openspot01So, here’s my take on openSPOT…

What’s In the Box

–   The SharkRF openSPOT
–   120-240V / 5V 1A  wall supply
–   USB / micro USB power cable
–   Small UHF antenna (SMA-Male)
–   39″ (1m)  Ethernet cable

Chassis Size: 2.75 x 2.5 x 1.0″
(71 x 67 x 25mm)
Weight:  5oz  (150g)
  
Enclosure


To start, the openSPOT is a very solidly built unit.  Don’t let the size fool you.  The chassis size is only 2.5 x 2.75 x 1.0″, but the weight is 5oz.  This is due to the weighted base plate inside
the enclosure to stabilize it when the cables are connected.  There is no heat build up inside, which allows me to run mine 24/7. The antenna jack is a standard SMA-F, with the antenna terminating with an SMA-Male. Four small rubber feet assist in keeping the chassis stable.
openspot02

The Manual

The openSPOT manual never goes out of date because it’s web based. The instructions and tutorials include both graphics and videos to guide you through the entire setup. As new features are added, the manual is updated online, so it’s never out of date.

Setup and Interface

To set up the openSPOT, I connected it to the USB power source and my WiFi router using the supplied Ethernet cable. The openSPOT has two internal micro-controllers, designed to use a web based interface. Once connected to my WiFi router, the openSPOT was accessed by simply logging into //openspot.local.  I didn’t need to load any additional software or drivers. Everything is self contained.

At that point, all that was necessary was to enter:
–  The operating mode (DMR, C4FM, D-Star)
–  My callsign
–  My DMR ID (available from DMR-MARC)
–  The desired server
–  The input and output frequency of my handheld
Note: The openSPOT allows you to select two different frequencies if desired.
After that, a 30 second calibration, and I was on the air.
The LEDs give a clear status indication during operation.

Once configured, time slot, trunk group, etc. information is controlled by your handheld. You set it, and forget it.
openspot-frontback
Cross Mode Operation

 
The openSPOT has cross mode capability, allowing a DMR transceiver to access C4FM, as well as  C4FM access to DMR.  This allows you to operate both modes with one handheld. I personally haven’t ventured into the cross mode operation, but understand it works perfectly.
 
OTA Audio Quality

This is where the openSPOT excels. In the past few months, I have learned to identify some hotspots by their robotic audio, much like R2D2 and BB8.  I can honestly say that I have never heard  an openSPOT with less than perfect audio. My reports have been nothing short of excellent.  I use mine on a daily basis, and have had absolutely no issues.

Firmware Updates

The openSPOT firmware is totally upgradable.  Periodically, SharkRF will post FW Beta versions on their site, however my personal preference is to wait until a final version is posted.  I do, however, like to review what is included in the beta versions to get a glimpse into the future. The developers are constantly keeping up with network changes so you always have the latest version.

Resetting the openSPOT

Part of the FW upgrade procedure requires pressing the tiny reset switch on the back pushpinwhile plugging in the USB cable. To assist with this procedure I fabricated a reset button. It consists of a small Push Pin with the pin cut to approximately 1/8″ (3mm). I rounded the tip with a file to prevent damaging the internal switch. It makes pushing reset a one hand operation.

Transmitter
 
The power level of the openSPOT variable up to a max of 20 mW.  That may not sound like a lot of power, but 1 mW is enough for me to hear the signal solidly throughout my entire house.  20 mW on an outside antenna will allow you to use a digital radio throughout your neighborhood.

 
But how about Mobile Installation

Here’s where I became a bit creative. Rather than connecting directly to my router (downstairs), I wanted to see the lights flashing, so I purchased a TP-Link TL-WR802N and set it up as a client to access my in home WiFi. The openSPOT never missed a beat.

Why the TP-Link? Well, it is just slightly smaller than the openSPOT, connects via an Ethernet connection, and fits nicely on top of my RAVPower 22000mAh battery. I linked the TP-Link to my Cellular WiFi hotspot and now, instant digital mobile. I also successfully tried a Vonets VAR11N-300 mini.
openspot-mobile
Now when traveling or on vacation, I no longer need to program a codeplug for every repeater along the way.  I set the radio to mate with the preselected openSPOT frequency, and that’s it. I now have access to the worldwide Brandmeister network

The entire mobile hardware configuration is approximately 2 x 3 x 6.5″ (5.5 x 8 x 16.5cm), not counting a few cables sticking out. The entire configuration fits inside a pencil box.

I also noted that the cellular data required is relatively small. Approximately 6MB per hour.
  
So, why an openSPOT

Hotspots were not developed to replace repeaters, but rather to supplement them. In areas where there is No repeater, a hotspot allows the user to connect directly to a digital network via the internet. In areas of Heavy repeater use, a hotspot allows the user to access the network without competing for an available time slot.

If your local repeater gives you access to a network such as DMR-MARC, an openSPOT can give access to networks such as Brandmeister. You will now have access to the best of both worlds.

Summary

DMR repeaters are being placed in service daily, but currently there are only around 800 repeaters in the US.  As for me, I am 25 miles away from my two nearest repeaters and require an outside antenna to reliably use them (and I’m one of the lucky ones). In some areas of the country, digital repeaters don’t exist.

The solution quickly became obvious. To enjoy the freedom of a handheld, I needed the help of a hotspot.  After listening to several configurations over the past several months, I am convinced daily that I definitely made the right decision with an openSPOT, with everything I need condensed into one small package.

sharkopen-200
SharkRF –  Home Website
SharkRF –  Purchase

miklor_icon

Review – Connect Systems CS-580 DMR Tier II

by John ‘Miklor’
K3NXU
cs580-20
CS-580
The Connect Systems CS-580 is a feature packed band UHF DMR handheld with dual mode (FM) capability. Currently, there is only a UHF version, used for this evaluation.  There is a VHF version also in the works, but will be a few month out from the time of this review.

In the Box

Included with the radio are the:
–  7.4V  2100mAh  Li-Ion Battery
–  Charger base & AC adapter
–  Antenna (UHF) – 5 3/4″ (14.5cm)
–  Belt clip
–  Hand Strap

User and Software Guides can be found at the
Connect Systems website

General Description  /  Specifications
–  UHF
–  DMR   Tier II
–  FM capable
–  1W / 4W transmit
–  1024 channels
–  256 contacts
–  6 line Color LCD
–  Enhanced Monitor Modes
–  Digital Squelch

Certification

The CS-580 is US FCC Part 90 certified, so if you want to put it to use in commercial service, it’s ready to go.
cs580-p90Enclosure
The CS-580 case has a solid feel and weight that fits my large hand perfectly.  The backlit keypad buttons are large and require little pressure to make a positive contact.  There are two programmable side buttons that can be assigned to any four available possibilities.  Mine are set to Power, Zone, Scan, and Enhanced Monitor, but you have your choice of 28 options.

Transmitter

The frequency range is UHF 400-480 MHz.  Along with Tier II DMR, the radio also supports both Wide and Narrowband FM.  My OTA audio reports have been excellent, with absolutely not need to shout into the microphone. In fact, my best audio reports were talking in a normal voice approximately 2″ from the microphone.  As for the transmitter power, it was right where it should be.

4.2 Watts on high power, and 1.1 on low.

Receiver
The receiver sensitivity is excellent, and the audio quality is loud, clear and undistorted. There is no squelch, but the Talk Permit indicator emits a soft tone that lets you know when the channel is clear. There are several receive mode options for both scanning and site monitoring that are extremely useful, especially if you are on the road.

Receive Options

There are several very impressive enhanced receive options available with the CS-580.

– Enhanced Monitor – Simply put, I enter the repeaters frequency and the radio monitors everything that comes across, regardless of Time Slot.  If I hear a station I like, I press the Lock button, and I’m ready to transmit. The DMR ID, CC, Slot, Type, Contact #, Tx and Rx frequencies are displayed on the LCD.

– Group Receive – This function allows you to load up to 16 contacts into a single receive group. If any one of those channels becomes active, that’s what comes through the receiver. When transmitting, the pre-assigned transmit contact for that channel is the one selected.

– Enhanced Scanning – This allows you to select a scanning range between 400-480MHz, repeater offset, and channel spacing. When a repeater signal is detected, the scanning stops, and there is an option to Lock onto the frequency. When keying the transmitter, the offset will automatically shift the frequency to the desired shift.

– Standard Scanning – This is when you add channels to a scan group. If you are listening to a TG or channel that is part of the group and select Scan, the radio will now scan all other TG or channels within that group.

– Enhanced Parameters – This is field programming made easy. It allowed me to program everything via the keypad. In the DMR mode, I entered the CC, Slot, Type, Contact #, Tx Freq, and Rx Freq. A quick press of the Lock key, and I was on the air.
In the FM mode, I entered the CTCSS Decode and Encode, Tx and Rx Freq. Once again, press the Lock key and it was on the air.

Audio
If you are new to DMR, the first thing you will immediately notice is there are no noisy signals. If a signal has enough strength to be heard by the receiver, it is digitally processed where all noise is eliminated and what would be a noisy signal on FM now sounds as though the person is standing right next to you, with no robotic R2D2 sound found in some other digital modes.

Antenna
The supplied antenna is 5 3/4″ long and cut specifically for the UHF band and performs well. It is terminated with an SMA-F connector, so if an antenna upgrade is desired, any UHF antenna with an SMA-F connector is interchangeable.

Display
I found the 6 line multicolor display easy to read with all pertinent information displayed at one time. The LCD measures 1.2″ x 1.4″ with excellent resolution. The large power level, signal strength and battery level icons were clearly visible.
cs580screen20
Programming and Software

If you are entering the world of DMR for the first time, be aware that programming a digital radio is a bit different from a standard FM transceiver. Although the FM side is standard, with Freq, Offset, CTCSS, the digital side requires a bit more in depth knowledge. I would personally recommend that you find someone in your area or radio club that can assist with a basic understanding of how it all comes together. Once you understand the basics, everything will fall into place nicely.

Firmware
The CS-580 was introduced in November 2016, and the firmware is fully upgradable. When changes and upgrades are introduced, the firmware can be upgraded with a standard Windows based PC. You will always have availability to the latest version via the Connect Systems website.

Programming Cablecs580cable20a
The programming cable resembles that used by Motorola style radios but a bit smaller. The business side of the cable is approximately 1″.  Once placed in position and screwed down, the connection is 100% positive, eliminating the possibility of a bad connection.  The programming UART chip is in the radio, not the cable, and the proper drivers load automatically making the cable virtually Plug and Play. When the connector is attached to the radio and plugged into the PC, a distinct icon is displayed on the LCD showing the USB cable is connected and ready to go.

Battery and Charger
I easily get a full day of use plus from the 2100mAh in the digital mode. The battery slides on securely which I’m sure contributes to the moisture proofing of the radio.  The charge indicator is a definite red when plugged in and a bright green when charged.  The 9V 1.0Ah wall charger takes a depleted battery to full charge over night with no problem.  While the radio is in use, one of the side key options is Battery Power which very clearly displays the battery level.

Accessories
Al this time, the available accessories are 2100mAh Batteries, Spkr/Micr, and Programming Cables (a must have).

Conclusion

I’ve had the opportunity to use this radio for the past few weeks and have had absolutely zero issues with it.  The six line readout is clear and sharp, and every audio report has been excellent.
It’s a commercial grade DMR radio designed around a Tier II platform. You may pay a few dollars more, but for $130, you definitely won’t be disappointed.
Jerry has hit the nail on the head with this one.

Information:  Connect Systems,  Miklor

Review – BTech APRS-K2 Cable (TRRS/APRS)

by John ‘Miklor’

aprs-k2-25
APRS-K2
It’s long overdue, but there’s finally a TRRS/APRS cable available for radios using a standard Kenwood style K2 connector.

I’ve been wanting to get involved with APRS for a while now, and this made it extremely easy.

APRS-K2 interface cable
The APRS-K2 cable allows you to interface your handheld transceiver with your existing mobile device, including. iPhone, iPad, and Android.

One end of the cable uses the Kenwood style K2 connector, while the opposite end is aprs-xover-25terminated with a TRRS connector. Also included with the APRS-K2 is a Reverse Adapter to insure compatibility with all devices. This adapter allows cable to connect to earlier 3.5MM TRRS standards, such as Nokia.

App Driven
The APRS-K2 cable uses a virtual TNC found in several apps, such as APRSDroid, APRS.fi, and Pocket Packet. Plug in the cable, turn on the VOX, and you’re pretty much set to go.

Product Description
BTECH APRS-K2 TRRS / APRS Cable A simple way to start using APRS by using devices you already own. The BTECH APRS-K2 Cable will quickly connect your radio to APRS by using virtual TNC (app driven) on your tablet or device. The APRS-K2 cable is built with a custom circuit board that will automatically adjust the audio for clear packet transmissions with minimal adjustment; along with protecting your devices from strong over modulated signals.

Along with allowing APRS functionality the APRS-K2 cable can provide a simple interface gateway to allow several features to your radio!

Easily record radio conversations:
By connecting the APRS-K2 cable between your radio and any recording (line-in) device.

Use the APRS-K2 cable as a Mic In Connector:
Set up VOX on your radio to accept any form of incoming audio – such as a Push-to-talk application on a Phone – or a Line-out application from your computer.

Use the APRS-K2 cable to push transmissions over a speaker system:
Easily play audio over a intercom or speaker system from your handheld.

With a backup radio and your own ingenuity, the APRS-K2 cable can serve as an interface for a variety of applications for any amateur. Compatible with Kenwood K2 Accessory Slot Radios (such as BaoFeng, BTECH, Wouxun, TYT) Compatible with all phones, tablets, and computers with 3.5MM Audio In/Out Ports

Includes:
APRS-K2 Cable
Reverse Connector Adapter
Quick Start Guide

Conclusion:

The cable comes with a simple one page instruction sheet which should have you up and running in about 10 minutes after the appropriate app is loaded.
–  Plug in the cable
–  Set your handhelds volume control
–  Turn on the VOX
–  Set your handheld to 144.390 (US)
–  Activate the app

That’s all it takes. If you’ve been considering building an APRS cable, you might find this an easy Plus and Play alternative.

The APRS-K2 can be ordered from   Amazon, or if outside the US, you can go to their website and contact them directly.   Baofeng Tech

Too many toys, too little time.
John ‘Miklor’   K3NXU
http://www.miklor.com

Review – BTech UV-5X3 TriBand Handheld

by John ‘Miklor
.
.
5X3 front 4UV-5X3
Although the case design is familiar, the radio inside is not.  BTech has recently introduced the new UV-5X3 to the US Ham Radio market.  This radio is a true triband transceiver with internal filters specifically configured for triband operation.The firmware in this radio has been reworked to include several new features not found in similar appearing radios.
.    
In the Box

Included with the radio are the:
–  1500mAh Li-Ion Battery **
–  85 page User Guide – English
–  Charger base & AC adapter
–  Hand strap
–  Belt clip
–  PTT Earpiece / Microphone
–  Antenna (1) – VHF / UHF  6  5/8″ (16.9cm)   A-V85
–  Antenna (2) –  220 MHz    6  3/4″ (17.4cm)
.
** This is the identical battery that is commonly mislabeled as 1800mAh on some handhelds.
.    
Tri-Band – VHF  220  UHF
The UV-5X3 was specifically designed as a Tri-Band transceiver.  The internal filtering allows not only the traditional VHF and UHF frequencies, but also includes the 222-225 MHz Ham band for the US.
.   5X3 label 2Case Design
The UV-5X3 has the traditional case design, which allows me to use my high capacity  BL-5L  3800mAh battery with no alteration to the base. Accessories such as my mobile battery eliminator, Spkr/Micr, etc. are fully compatible.
.
Transmitter
The frequency range is VHF 130-176 / 222-225 / UHF 400-480 MHz, supporting both Wide and Narrowband with 2.5kHz steps.The radio’s filtering scheme allows for full power on all bands. My OTA audio reports have been clean with clear with mellow audio.  Power levels are respectable using a Bird VHF/UHF Termaline.
.
UV-5X3 146
MHz
224
MHz
446
MHz
High 5.2 4.2 4.6
Low 1.7 1.6 1.6
     
DTMF / IRLP Access

Something new also appearing on this model is a DTMF gain adjustment, allowing me to adjust the DTMF audio to the transmitter to a comfortable level for both repeater control and IRLP access.
.    
Tone Burst
If you are in a area that requires tone burst for repeater or network access, the 1000Hz, 1450Hz, 1750Hz, and 2000Hz burst are accessible by pressing the PTT along with one of the four pre-assigned keypad keys.
.    
Receiver
The receiver sensitivity is excellent, and the audio quality is clear, loud, and undistorted. Along with the 3 TX/RX bands, the receiver also includes the traditional commercial FM radio band. (65MHz-108MHz)
.    
Tone Scanning – The receiver also has the ability to identify the tone of a repeater being transmitted by a received signal.
.    
Scan Add / Delete
This feature gives me the ability to add / delete channels from the scanning list using the keypad. No longer a software only function. The more I can do from the keypad, the better I like it.
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Scanning
A Long Press of the [*SCN] button will start the scanning process.Channel Mode – When scanning with the Display Sync set to ON, the upper and lower display will scan together. This is explained below under Display Synchronization.Frequency Mode – When entering Scan, the image below will appear on the screen. Enter the first 3 digits set the range start, the second 3 digits sets the stop.
Example: Entering   146 : 146
Start  the scan range at  146.000
Ends the scan range at  146.999
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5X3 scan rangeAntenna
I found two antennas included with the radio. One was the standard upgraded A-V85 antenna, and a slightly longer one for the 220MHz band.
Antenna (1) – VHF / UHF  6  5/4″ (16.9cm)   A-V85
Antenna (2) –  220 MHz    6  3/4″ (17.4cm)
The separate antenna specifically tuned for 220 MHz is a great addition. The SWR shows 1.3 which is excellent. No compromise. I labeled my 220 antenna, as they are very close in appearance.
220AntLabel.
Display

The radio has a tri-color display, allowing the color options of the blue, orange and purple.  The LCD can be formatted in either of three formats. Choices are Frequency, Channel number, or up to 6 Alpha Characters.
Display Synchronization
The UV-5X3 supports display syncing, which gives ability to track both the upper and lower LCD. I keep mine set to display the channel name in display A, and the frequency in display B. When you change the channel, both the upper and lower displays move together.5X3 sync.
Programming
Manual programming is pretty straight forward once you enter a few channels. A programming guide can be found at Manual Programming with a Menu Definition summary available at Menu Definitions.
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Software  
The software support for the UV-5X3 can be found in the Latest Daily Build of CHIRP. There are a few new options that will be added to the 5X3 in the near future. One is the ability to Stun, Kill, Revive. This gives you the ability to disable your radio remotely.
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3rd Generation Chipset
The new chipset (RDA1846S and RDA5802N) provides reduced AGC switching noise and a low-IF digital audio processor for improved sound quality.
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Programming Cable
The programming cable requires a traditional two pin Baofeng / Kenwood style. There are several cable available. The generic cables may require special drivers, due to the use of cloned chips. For Plug and Play, a cable using an FTDI chip is recommended.cableK2 Conclusion
The UV-5X3 firmware has obviously been reworked to include:
–  Tri-Band Support: VHF/1.25M/UHF
–  D-ANI  (Display incoming DTMF Tones)
–  Synchronized Displays
–  DTMF audio gain level adjustment
–  Add / Remove Channels from Scanning list via keypad (LCD Dot Indication)
–  On the Fly scanning by Frequency Range
–  4 Tone Burst options
–  Remote Stun, Kill, Revive
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It appears that BTech has once again managed to stay one step ahead of the curve. With the 220 MHz ham band operation back on the rise in the US, this radio hit the market at the right time.  Even if 220 isn’t popular in your area, the additional new features still give it an edge over the traditional dual band series.
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More Information:   Miklor.com,  BaofengTech,  CHIRP
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