Motorola GM does not transmit speech: microphone, connection or station
The station turns on and receives messages, but when you try to talk, the interlocutor does not hear you. This is the reason to describe the situation, rather than immediately declare the microphone faulty. the technical guide helps prepare the data for verification and order the MDRMN4025 if the replacement of the accessory is really agreed.
GM340.ru · updated 12.10.2026
Separate observation from withdrawal
Write down exactly what the operator noticed: the device is turned on; reception is or is absent; pressing the transmission button is accompanied by an observable indication or not; the interlocutor hears speech, noise, interruptions or nothing. One sign does not establish the cause. The problem may relate to the accessory, connection, condition of the device or its settings; confirmation requires checking a specific kit.
If the connection disappeared after a certain event, specify it separately: the replacement of the microphone, the transfer of the station, work with power supply, the appearance of an adapter or a change in configuration. There is no need to hide the sequence of changes, even when the external apparatus remains the same.
Short circulation map
| Observation | What to add to the description |
|---|---|
| There's no speech on the other side. | Full model, microphone installed, observed response when attempting transmission |
| The problem began after the replacement of the accessory | Old and new codes, photo connection, information about the adapter |
| Work is interrupted when the cord moves | When it is noticed and whether there is visible damage; do not disassemble the connection yourself |
| The kit was moved to another car | What elements have been preserved and what has been changed during the transfer |
| The cause is still unknown. | Request for verification and selection, without the statement “only a microphone is needed” |
What can be prepared without disassembly
Take a photo of the station nameplate, accessory marking, plug and general installed kit. Visible damage to the cable or body, note in the description. If you use an adapter or an external unit, you need its designation and photo. Do not assign a wiring on a similar connector and do not connect contacts for the sake of checking.
For the treatment, it is enough to preserve the observations of normal work and equipment data. Check with the control accessory and the assessment of the device itself, coordinate with a specialist for a specific model. Buying a similar microphone without approval can add an incompatible accessory to the original problem.
When is it appropriate to request MDRMN4025?
The MDRMN4025 is listed in the official catalog of GM series accessories as a functional compact microphone. If the need for such an accessory is confirmed for the installed set, the code, quantity and necessary accessories can already be called in the request.
If the cause has not yet been established, state the request differently: “We need to check the microphone and find a replacement for Motorola GM [model]; symptom description and photo attached.” This allows us to discuss the appropriate product and the boundaries of further testing, while maintaining the initial uncertainty.
Microphone, power cable and new station
These positions do not replace each other. If the microphone is faulty, only an accessory may be required; if the other element is a problem, buying the microphone does not automatically eliminate it. If the need for a new station or power supply cable is clarified, coordinate them in separate lines with the full configuration.
In the product block there is MDRMN4025 and appropriate transitions to workplace equipment. They help to continue the selection, but are not a ready diagnosis for the described symptom. The procurement package is determined after the task and specific products are agreed upon.
Ready-made description for the letter
Motorola GM [full model], microphone [code]. Observation: [what works and what doesn't work]. The problem came [when/after that]. Adapter [code or missing]. Photo marking, connection and installed set attached. We ask you to agree on the verification and the appropriate accessory; if you confirm the replacement, you need [code and quantity]. Receipt is [city].”
Save the received answer together with the data set. It will come in handy at the next call and will separate the confirmed selection from the preliminary version of the operator. Availability, scope of supply and delivery conditions are agreed upon on a specific application.
Order and city of receipt
If the point of receipt is Nizhny Novgorod, Samara or Astana, specify the city and address in the application. For another city of Russia or Kazakhstan, we also agree on the terms in the quotation. The cost, available quantity, composition and term are confirmed for a specific order.
Questions before ordering
The station accepts, but it is not audible: is it a microphone?
Nope. The described symptom does not in itself establish the cause. You need to check the specific device, accessory, connection and configuration.
Can I buy MDRMN4025 before finding out the cause?
You can request the selection of this position, but the correspondence and need for replacement should be agreed on the model of the station and the installed set.
What data are needed for the treatment?
Full station model, microphone and adapter code, marking and connection photos, observed symptom and history of changes.
The next step in your workplace
- Motorola MDRMN4025: a microphone for the existing GM fleet
- Replacement of the Motorola GM microphone: how to order a suitable MDRMN4025
- Spare MDRMN4025 for the fleet: statement, reserve and issue
Other tasks of the park: Related technical guide of equipment.
Purpose of products: Directory of accessories GM, Motorola Solutions (microphones, page 2); GMN6146, Motorola SolutionsConfiguration and the composition of a specific delivery are agreed separately.
Order a microphone for the existing park
Specify the full station model and the microphone code installed. For the MDRMN4025, configuration and quantity are agreed separately from radio: the entire fleet is not required to be repurchased when changing accessories. The station cards below help to specify the model accurately; the need to include them in the order is determined by your task.
MDRMN4025 microphone
Catalogue illustration of a handheld microphone for MDRMN4025. Code and compatibility are confirmed for a specific station.
Motorola GM340 VHF
The real body GM340. The range and full configuration of the instance is confirmed by marking and quotation.
Motorola GM340 UHF
GM340, different angle. The appearance of the range is not defined; the configuration is agreed separately.Request quotation: office@gm340.ru · +7 381 249-00-02Please email us. Provide the full models, quantity and address of receipt; composition, current availability and deadline will be agreed in the response.