Motorola MOTOTRBO Desktop Microphone

Motorola RMN5050A MicrophoneMotorola have announced a new desktop / base microphone compatible with all DM3/4 series mobile two way radios.

This microphone sits neatly on a desk allowing easy push to talk with a single finger. The microphone has mic-gain which allows you to adjust the volume of the microphone on the back of the unit.

Fitted with a standard MOTOTRBO connection, the Motorola RMN5050A microphone is compatible with all MOTOTRBO DP3 and DP4 series mobile radios.

By using the RMN5050 microphone with extension leads PMKN4033A (10ft) and PMKN4034A (20ft) with an external speaker (for example the RSN4002A), you can easily mount the radio totally out of sight and just have the microphone and speaker on your desk.

Order Code: RMN5050A

Compatible Radios: DM3400, DM3600, DM4400, DM4600 (and the GPS/Bluetooth 01 versions)

> You can buy the RMN5050A Microphone from our main website.

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Motorola DP1400 Analogue Vs. DP1400 Digital

Motorola DP1400How confusing is this… The Motorola DP1400 is available in two different flavours – Analogue Only and Digital Version.

So what’s the difference?

The Motorola DP1400 analogue version is a digital radio with the digital chip disabled by default. To make the digital chip work, you need to purchase a “digital mode activation licence key” from Motorola. The digital version of the Motorola DP1400 is, put simply, the same radio with with the digital mode activation licence key pre-installed, and hence the digital chip switched on.

Note: All Motorola digital radios will also work in analogue mode for backward compatibility.

Below is the list of models available from the factory as standard.

DP1400 Model Table

> You can buy the Motorola DP1400 from our main website.

Model Code Digital/Analogue Band Frequency
Analogue Models
MDH01JDC9JC2AN Analogue Only VHF 136-174MHz
MDH01QDC9JC2AN Analogue Only UHF 403-470MHz
Digital Models
MDH01JDC9JA2AN Digital / Analogue Hybrid VHF 136-174MHz
MDH01QDC9JA2AN Digital / Analogue Hybrid UHF 403-470MHz

As you can see from this Model Table, you can buy the DP1400 as an analogue-only radio or as a digital radio as standard.

How Can An Analogue DP1400 be Upgraded to Digital?

This is easy to do. You’ll need to buy HKVN4204Adigital mode activation licence key“, one per radio, which you can buy from Radiotronics. You can either buy a programming lead and CPS software and install the licence yourself, or ask our in-house engineer to do it for you (fee applies). However, this is the pricey option – as it can cost up to £70 per radio for theHKVN4204A licence key. It’s cheaper to buy the Motorola DP1400 as a digital radio in the first place.

> You can buy the Motorola DP1400 from our main website.

Should I Buy An Analogue Only DP1400?

This depends. If you already have a number of CP040 or GP340 radios which you want your new DP1400 radios to work with and you have no interest in migrating to digital, then there’s no need to have digital radios.

However, if you will want to migrate to digital any time soon we recommend the digital version. The price difference between the Motorola DP1400 Analogue Only and Motorola DP1400 Digital Version is not as much as the HKVN4204A upgrade licence key.

> You can buy the Motorola DP1400 from our main website.


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DP4400 Wideband VHF Whip Antenna

Motorola have announced a new VHF wideband antenna for the MOTOTRBO DP4000 range of two way radios. Spanning the whole VHF spectrum, ranging from 136-174MHz, this antenna is ideal for professional and HAM radio use.

Motorola PMAD4147A

Order Code: PMAD4147A


  • Type: Whip
  • Frequency Band: VHF
  • Frequency Range: 136-174MHz
  • GPS: Yes
  • Colour Code: Green
  • Length (cm): 20

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PMR446 Frequencies

PMR446 is the EU band for licence free low power two way radio use.

There are 8 frequencies  allocated for analogue radios, 16 frequencies for dPMR digital radios and 8 frequencies allocated for DMR digital radios.

Licence Free channels are only to be used on licence free certified radios. These usually have a fixed antenna but only put out 500mW (0.5W) of power.

We have two sections on our website for licence free two way radios:

> Licence Free Two Way Radios (Business Grade)
> Licence Free Walkie Talkies (Leisure Grade)

It is illegal to program and use high power business radios on PMR446 channels unless you can find a way to restrict their power to 500mW. There is currently no high power business radio that can be restricted to less than 1W – therefore no professional grade high power business radios that can be legally programmed to operate on PMR446 channels.

PMR446 Analogue Channels

There are 8 allocated PMR446 analogue licence free channels. They are to be used with 12.5 kHz spacing when programming your radio.

If your radio supports CTCSS or DCS codes, you can utilise CTCSS or DCS codes to reduce the chances of interference. Using CTCSS / DCS codes do not stop other radios user from hearing you, but they will stop you from hearing unwanted interference and other radio users who do not have the same CTCSS or DCS code. CTCSS and DCS are not privacy, they’re just useful for blocking out interference.

> Read more: CTCSS Article on Wikipedia
> Read more: DCS Article on Wikipedia

PMR Channel Frequency (MHz)
1 446.00625
2 446.01875
3 446.03125
4 446.04375
5 446.05625
6 446.06875
7 446.08125
8 446.09375

dPMR446 Digital Channels

These channels are for use with dPMR radios such as the Icom IC-F29DR and Kenwood TK-3401D.

dPMR446 Channel Frequency (MHz)
1 446.103125
2 446.109375
3 446.115625
4 446.121875
5 446.128125
6 446.134375
7 446.140625
8 446.146875
9 446.153125
10 446.159375
11 446.165625
12 446.171875
13 446.178125
14 446.184375
15 446.190625
16 446.196875

DMR Channels

The following channels are for use on DMR radios. If your radio supports dual time slot, you can also use TDMA to create two voice channels per frequency.

> Read more: TDMA Article on Wikipedia

DMR Tier I channel Frequency (MHz)
1 446.10625
2 446.11875
3 446.13125
4 446.14375
5 446.15625
6 446.16875
7 446.18125
8 446.19375

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Motorola GP340Ex (ATEX) Battery & Charger Guide

Motorola GP340ExThe Motorola GP340Ex is a different radio to the standard Motorola GP340. GP340Ex is an ATEX-rated two way radio which can be used in potentially hazardous areas such as gas plants.

The picture we show here is of the latest iteration of the GP340Ex which is blue. The predecessor was black. There is a difference. The black version must be used in an ATEX-rated leather case and sling. This is not the case for the blue version.

Most ATEX radios are restricted in output power and have special ATEX-rated batteries and the GP340-Ex is no different.

Current Motorola GP340Ex Battery

There is only one battery for the GP340-Ex. The order code is NNTN5510DR.

Previous GP340Ex Batteries

Previous iterations of this battery are NNTN5510AR, NNTN5510BR and NNTN5510CR. However, the NNTN5510DR is a direct replacement for all of these previous batteries.

Motorola GP340Ex Chargers

Whilst the Motorola GP340Ex has it’s own battery, it does share the same chargers.

Current Single GP340Ex Chargers

These are the GP340 single chargers that are currently available. If you have a charger other than the ones in this table, see the discontinued section of our main GP340 batteries & charger article for the correct replacement.

> You can buy Motorola GP340Ex chargers from our main website.

Region Non-IMPRES Model IMPRES Model Old Power Cord New Power Cord
Base Only MDHTN9000C WPLN4183A-EU None None
Europe PMLN5196B PMLN5188B EPNN9286B PS000037A01
UK PMLN5195B PMLN5188B EPNN9287B PS000037A02

Current 6-Way GP340 IMPRES Chargers

These are the GP340Ex 6-way chargers that are currently available. If you have a 6-way GP340 charger other than the ones in this table, see the discontinued section of our main GP340 batteries & charger article for the correct replacement.

> You can buy Motorola GP340Ex chargers from our main website.

Region Non-Display Model Display Model Power Cord
Base Only WPLN4197 WPLN4198 None
USA WPLN4187 WPLN4192 3087791G01
Europe WPLN4189 WPLN4194 3087791G04
UK WPLN4188 WPLN4193 3087791G07
Australia/New Zealand WPLN4190 WPLN4195 3087791G10
Argentina WPLN4191 WPLN4196 3087791G13
US WPLN4205 WPLN4204 3087791G01
Korea WPLN4146 WPLN4145 3087791G16

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Motorola P145/P165/P185 Programming

Motorola P100 CPSAre you looking to program your Motorola P145, Motorola P165 or Motorola P185 series radio? Radiotronics offers everything you need to do just that.

What you need

Compatible Operating System

The GMVN5534 P100 Programming Software (CPS) requires Windows XP or Windows 7. We cannot say for sure that it will or won’t work on Windows 8 or 10 as it has not been tested. If you find it works on Windows 8 or Windows 10, please email us at and let us know.

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Motorola CP040 Discontinued

Motorola CP040Motorola have announced the cancellation of the popular Motorola CP040 in favour of the recently released Motorola DP1400. The cancellation notice also includes some lesser known radios from the CP Commercial Series: CP040, CP140, CP160, CP180.

The announcement follows Motorola’s release of the DP1400 in September last year where Motorola positioned the DP1400 as the replacement for the CP040.

Motorola have said that all orders for CP Commercial Series must be made before 10th November 2014.

Originally the CP040 was to be discontinued in February 2015, however, this has been brought forward. Motorola says:

In February, Motorola issued an Intention to Cancel Notification for Commercial Series radios. Due to higher than expected global demand, there is a risk that stock may deplete prior to the previously issued last order date, hence the last order date is being brought forward from February 2015 to November 2014.

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Motorola GP340 Discontinued & Replacement

Motorola GP340Motorola has announced that the very popular Motorola GP340 two way radio is to be discontinued with the replacement being the Motorola DP4400.

Motorola says:

As the migration to MOTOTRBO accelerates, Motorola will be cancelling the following list of models. There will be a transition period after the Last Order Date, during which we will continue to sell cancelled models until stock depletion. This cancellation notice does not affect accessories which we will continue to supply until further notice.

Motorola GP340 has been seen as an industry standard by radio users for many years. However, Motorola Solutions are accelerating their migration to the MOTOTRBO range of radios. Motorola is marketing the Motorola DP4000 series as the official replacement for the GP340.

GP340 / DP4400 Replacement Reference Table

GP Model Replacement Notes
GP340 DP4400e
GP360 DP4600e
GP380 DP4800e
GP640 DP4400e With MPT1327 Option Board
GP680 DP4800e

Motorola Solutions have said that the last order date for the Motorola GP340 is 16th February 2015. However, all orders must be received and confirmed before this date.

Motorola Solutions have been keen to make sure that clients are aware that parts will remain available for at least 5 years following the product cancellation.

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Motorola P145/P165/P185 Charger Replacement

Motorola have today announced that the P100 series chargers will be replaced as follows.

> Also see our article on Current Motorola P145/P165/P185 Batteries & Chargers

Note: We may still have a couple of the old chargers. Check our main website for availability.

This covers the following radios: P140, P145, P160, P165, P180 & P185.

Item Region Charge Ports Replacement
PMLN6373A UK Six PMLN6599A
PMLN6372A Euro Six PMLN6602A

Motorola have stated that the last order date for the old charger models is 17th February 2014 after this time only the replacement model will be available to order.

Design Change

The old charger resembled (but is not) an IMPRES charger.

PMLN6373A / PMLN6372A

Whereas the new charger is “soldiers in a line” design.

Discontinued Models

All of the following models are now discontinued.

Charger Model Country Batteries Radios



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Motorola CP040 & DP1400 Charger Replacement

Motorola have today announced that the CP040 charger will be replaced as follows.

Also see: Motorola CP040 DP1400 Battery & Charger Guide

This covers the following radios: CP040, CP140, CP160, CP180, CP200 & CP200D

Item Region Charge Ports Replacement
NNTN8351A UK Six PMLN6600A
NNTN8352A Euro Six PMLN6598A

Motorola have stated that the last order date for the old charger models is 17th February 2014 after this time only the replacement model will be available to order.

Design Change

The old charger resembled (but is not) an IMPRES charger.

Motorola NNTN8355A


Whereas the new charger is “soldiers in a line” design.

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