- Frequency Steps -
Steps range from 2.5 to 25 kHz.
- Audio Scrambler
The Audio Scrambler utilizes the voice inversion process. This feature must be activated on
two similar radios (Tx and Rx) to be effective.
Although the function
works properly, check with your countries regulations regarding its use.
The radio has 200 channel capability with a top end range to 520MHz.
The receiver sensitivity is on par with any mobile I’ve used in the past and
there's plenty of smooth, clear and loud audio.
New Features Added
- Gen3 - Adjustable Microphone Gain
- You can now vary the microphone sensitivity. For heavy background noise, audio
the gain back. For a quiet environment, set the gain higher.
- Gen3 - Adjustable DTMF Tone Level Gain
- The tone level can now adjusted either manually or through the software.
- Gen3 -
Selectable Power Level -
Hi/Lo power can
now be changed with a quick press of the '#' key on the microphone keypad.
- Gen3 - Selectable VFO/Memory Mode - Mode can be changed with a long press of the 'Menu' key on the microphone keypad.
- Gen3 - Cooling Fan -
External heat sink cooling fan added.
- Gen3 - Additional Receive Filtering
- Added for improved selectivity.
- Gen2 - Display SYNC - An option has been added to allow the Upper and Lower displays be synced, allowing the upper display to show channel Name while the lower displays the Frequency.
Dual channel display (TDR) is still there, but sometimes you just want to
display the channel you're using. Now you have a choice.
- Gen2 - Memory Mode Lock - The radio can be Locked into the channel mode (MR).
- Gen2 - Menu Lock - While in the channel mode, the Menu option can be locked out to prevent accidental field programming.
- Gen2 - Reset Lockout - The Reset option can be locked out to prevent accidental reset.
Another nice safety precaution.
- Gen2 - Auto Power Off - This allows the radio to shut off if
the receiver is inactive for a preset amount of time.
- Gen2 - Dual Watch Delay - allows the receiver to stay on a
channel for a preset amount of time before returning to the primary channel
after the secondary channel is clear. You can now select the delay time
(up to 50 seconds) before the radio returns to the Dual Watch mode.
- Gen2 - Squelch Tail Elimination - Eliminates the squelch tail
if the station or repeater being received has the same function active.
The radio comes with a full function keypad style microphone.
Functions include: Menu, Up, Down, A/B, Exit, Reverse, Scan and Lock, and Hi /
Lo power selection.
The OTA reports were excellent with plenty of audio, so there's no reason
to shout. My best results were talking in a normal voice about an inch or
The RJ-45 microphone jack has the same pin output as the Kenwood.
Cross Band Repeater
Two BTech mobiles can be used in a cross band repeater configuration using an
interface cable. A full description of the procedure, wiring diagram, and
control output can be found
When using as a cross band repeater, be sure to provide ample cooling fans.
The radio has a tri-color display, allowing color options of the
familiar blue, orange and purple. The LCD colors can be selected to suit your
personal preference with a screen size of 1.4" (3.4mm) wide. The LCD can be
formatted in three different formats: Alpha Characters, Frequency, or Channel
Manual programming is pretty straight forward once you enter a few channels.
A programming guide can be found at
with a Menu Definition summary available at
There is a single bank of 200 channels. You can set a channel to be added or removed from
the scan list using software.
The software for the UV2501+220 was designed specifically for this radio, due the added features and frequencies.
Prior software is Not compatible with
this radio. Loading this software
to another radio will Not add new features to that radio. Use only the software that is designed specifically for your radio.
This software can be downloaded from Miklor.com
CHIRP support is available.
The programming cable is a 1m (39") USB to 3 pin 3.5mm. My recommendation is to purchase a cable that utilizes an FTDI chipset, such as the
. It may cost a few dollars more, but it's plug-n-play. If a generic cable is acquired, it will more than likely require a backdated driver. Those drivers can be found at
My recommendation is to not fool around with a cheap cable. Purchase an FTDI cable PC04
. It may cost a few dollars more, but
Front Panel Operation
The buttons may be a bit difficult to read in the dark. There is enough
light to show where the buttons are, but not to clearly read them.
Fortunately, the microphone keypad is well lit, so programming can easily be
done via the keypad.
The 7 buttons are Function, Monitor, Call, VFO/MR, FM Radio, Exit A/B, and
Up to six Alpha Numeric characters (upper and lower case) can be displayed to identify each channel.
Scanning in the VFO mode allowed me to scan either the VHF, 220MHz, or UHF band. In the Channel mode, the scan would select any
channel in the list regardless of band.
Prior issues resolved
Early first generation radios had a few annoying audio issues that required
'work around'. After many hours of drive testing with the new +220 series, I can
attest to the UV2501+220 having none of the prior issues.
Adjustable audio gain levels
Display Synching option
Extra features listed above not found in similar models
Plenty of power with clean audio
Lightweight and durable enclosure
More than ample
heat sink, now with heat sink fan
Excellent sensitivity and receiver audio quality
Small compact size
An external speaker jack
Added 220-225 MHz for the US Ham Band
With the added features mentioned above and no issues, this radio was quite an
impressive tri-band package.