Eliminating interference caused when recharging cellphones

[MikeSA]

Whenever my cellphone is on charge, I am unable to listen to stations on medium wave because of the interference. Does anyone know how this interference can be eliminated?

 

[HavocXphere]

Replace charger with a non-sh.itty one?

The whole thing seems highly improbable unless you're using very dodgy gear...

 

[Mr Scratch]

What phone?
Original charger and cable?

 

[MikeSA]

Thanks for the responses. I have several phones (Samsung, Lenovo, Mywigo, Hisense) and the problem is the same with all phones using original charges and cables. Could it be a problem with the electrical installation in the house?

 

[Mr Scratch]

Check the outlet's output. It should be 230V @50Hz from the wall.

Also, please clarify what you mean by stations, do you listen from the phone?

 

[Mr Scratch]

Does this happen when the phones are in airplane mode too?

 

[MikeSA]

Thanks again for the responses. No, I do not listen to radio stations on my phone but on a portable Sanyo radio. The voltage is the standard 230V, so what could be the problem? Even my neighbours have the same problem. The reception on FM is fine. It only when tuning into medium-wave stations that the problem arises.

 

[HavocXphere]

@Waylander
...think I don't have much to contribute here so...all yours

 

[Gordon_R]

Brand name chargers should not put out significant amounts of electromagnetic noise. If you do experience it, the most likely cause is the radio receiver is too close to the charger. Try moving the charger to another room, which should reduce interference.

 

[Gordon_R]

No, I do not listen to radio stations on my phone but on a portable Sanyo radio.[snip] Even my neighbours have the same problem. The reception on FM is fine. It only when tuning into medium-wave stations that the problem arises.

Wait, your neighbours also listen to MW stations, or their chargers interfere with your radio?

Switched mode power supplies used in chargers operate at the same frequency as MW signals, but they must be fitted with noise suppression circuitry in order to be CE approved.

Edit: Is your radio a genuine Sanyo model, or a clone. I was given one as a gift years ago, and it was a POS!?

 

[sgs]

Cheap switched mode power supplies (most chargers and downlight transformers are good examples of these) are terrible 'noise' generators and will very likely mess up your reception.

If your radio can run from batteries, see if that makes any difference as sometimes noise can be relayed via the mains lines.

But more likely the charger cable acts as an antenna, and broadcasts noise in the frequency that you are trying to listen to. Not much you can do then except move the radio further away (or charge your phone from a power bank).