Buzzing/Crackling Samsung Headphones with Built-in Mic: Laptop vs Broadband Scanner Issue

Hello colleagues, I have a problem with the buzzing / crackling of the phone headphones is a built-in microphone - Samsung. When connected to a laptop, everything is fine but as soon as I connect the broadband scanner, the headphones start to go crazy ... I used to have two pairs and one connected to a laptop and the other pair just to the scanner. I decided to buy a splitter and used this solution on one headphone. I'm afraid something might happen with the headphones, that's why I'm writing this post and I'm asking you for help. Why is this happening and what to do about it?

Added after 4 [minutes]:

Oh, and one more thing
The buzzing begins when connected to a laptop. Because I checked and the scanner itself works on 5 but when I connect to a laptop, the humming starts

The minijack plug you have for your headphones with a microphone has 4 "3 rings and 1 tip" in the plug? If so then you have a combojack connector. If you only have a headphone and only a microphone input in your laptop, maybe the only way would be to buy a special adapter that separates them and use only a stereo mini jack?

Dude, I only have three rings. Red and green plug. Whereas in the headphones there are 4 ring ones

Added after 1 [minutes]:

in the laptop there are two for headphones and the other for microphone

You get a plug like this from your headphones:
If so, then you need something like this:


I have improved the way of placing graphics.
RADU23

Buddy, I bought it, I already have it

Added after 43 [seconds]:


I made such a preview drawing

Added after 45 [minutes]:

Can anyone help ?

To connect the audio output from a computer and the audio from a frequency scanner, it would be more useful to use an adder than a splitter. Because such connection methods as you have come up with does not apply, because one will always interfere with the other.

Green jack is headphones, pink is microphone, it doesn't matter what and how you connect. Take photos of your connections, and write what you want to get through this connection. Please correct me if I misunderstood you, but you mean the possibility of using a scanner and listening to the laptop at the same time?

Colleagues want to hear the sound from the computer and the scanner on one headphone

Without broadcasting? The easiest way would be to make a left channel laptop, right scanner or vice versa. Then you need an adapter with 2 mono mini jack plugs (or stereo using 1 channel) and a stereo socket, in which you connect the green plug from your adapter. You can buy, you can solder yourself or ask someone who knows how to do it to you.

yes without broadcasting

You have nothing to combine as I wrote, with such a connection you will always have interference. Maybe to try to separate these two signals with 4.7uF electrolytic capacitors.

How does it look like?

Added after 1 [minutes]:

I noticed that when I put the headphones to the very end, one thing stops working