Yes, a modem can generally be placed in the meter cupboard. The meter cupboard is a common location for installing the modem because this space is usually close to the entrance of the house and contains the necessary electrical and telecommunication connections.

However, there are a few important considerations when placing a modem in the meter cupboard:

1. Range: Ensure that the signal range of the modem is sufficient to reach all areas in your house. If the meter cupboard is located in a remote spot or far from primary use areas, it may be necessary to install additional wireless equipment, such as Wi-Fi boosters or access points, to guarantee a good signal throughout the house.

2. Ventilation: Keep in mind that meter cupboards are usually small and enclosed, which may limit ventilation. Ensure there is adequate ventilation to prevent the modem from overheating. Good air circulation is important to keep the temperature low and extend the lifespan of the modem.

3. Interference: The meter cupboard may house various electrical devices and wiring, such as power cables, switch panels, and electricity meters. These can cause electromagnetic interference that may affect the modem's signal. If possible, try to keep the modem at a safe distance from such sources of interference.

4. Accessibility: Ensure that the meter cupboard remains accessible for maintenance and any adjustments to the modem or other equipment. It's important to easily reach the modem and resolve any issues that may arise.

It is always a good idea to seek advice from a professional installer or provider to determine if the meter cupboard is an appropriate location for your specific situation. They can assess the technical requirements and make recommendations based on your needs.