Bluetooth Receivers: 5 Fast Facts

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Fact #1. Bluetooth started as a way to guide Allied torpedoes during WWII. The unique frequency hopping technology was able to work around the Axis's jamming systems. It was dropped by the wayside until the Navy began to use it in the 1960's. There are significant differences between that and our contemporary technology.
Fact #2. It's a packet-based protocol. That means it divides data into suitably sized blocks for faster transmission. This makes it extremely efficient and able to transmit a large amount of data nearly instantaneously. Each packet is transferred via one of 79 channels. Each of the standard channels has a 1 MHz bandwidth. The new low energy technology uses 2 MHz spacing over 40 channels. Once connected it continuously hops between the different channels. That ensures it has the most stable and the fastest connection possible.
Fact #3. The transmission range is an important factor. Some receivers have a considerably wider range than others. This makes some more suitable for commercial use or in larger homes with more distance to cover. Others might work perfectly for your needs in a smaller home. These will also likely be a better fit for your budget.
Fact #4. The original name was MC Link. It was renamed in homage to the tenth-century Scandinavian king Harald Gormsson. He united the dissonant Danish tribes into a single kingdom. The name was fitting because Bluetooth unites communication protocols into a single universal standard. It was also created by a Scandinavian company. The logo even includes Harald's initials.
Fact #5. Compatibility with multiple devices is a bonus. If you intend your receiver as a hub, that can be important. Some may only allow connection to one device at a time. Others may allow for two or even three simultaneous connections. That's great if you need to quickly switch from speakers to headphones.