The main difference between a wide band repeater and a selective band repeater is the frequency range that they amplify. A wide band repeater amplifies all frequencies within a given range, while a selective band repeater only amplifies specific frequencies.

Wide band repeaters are typically used to improve signal reception in areas with poor coverage. They are also used to extend the range of a wireless network. However, wide band repeaters can also amplify unwanted noise, which can degrade the quality of the signal.

Selective band repeaters are used to improve the signal reception of specific frequencies. This can be useful for applications such as cellular phone signal boosters, which only need to amplify the frequencies used by cellular phones. Selective band repeaters can also be used to reduce noise and improve the quality of the signal

The best type of repeater for a particular application will depend on the specific needs of the user. If the goal is to extend the range of a wireless network, then a broadband repeater may be the best option. If the goal is to improve the signal quality of a specific frequency band, then a selective band repeater may be the best option.

Here are some additional things to consider when choosing a repeater:

• The power output of the repeater. This will determine how far the amplified signal can travel.

• The gain of the repeater. This is a measure of how much the repeater amplifies the signal.

• The number of channels that the repeater can amplify. This is important if you need to amplify multiple frequency bands.

• The weatherproofing of the repeater. If you plan to use the repeater outdoors, it is important to choose one that is weatherproof.

I hope this helps!