Upgrades for church sound system? Auracast? Anything else?

I suppose it is a circular 360 footprint with a 10m radius, which is 20m diameter if put in the centre.
Assuming you could get them cheap from ebay, you could potentially achieve a good result.
The only drawback is you will need to pair each hearing aids, but you only once.

Do you think it is a ground loop creating noise?

No, I know it’s not. As of now, there is no loop installed. It’s old wiring throughout the building.

A bad Planet Earth ground is a century old misunderstanding.
The connection to Planet Earth has nothing to do with good day-to-day AC power quality.
Just make sure that everything in the audio system is powered from the same AC circuit.

That depends on whether on not the broadcast is public or private. If private, you need to log-in to gain access.

But you aren’t “logging in”, you are just decrypting the broadcast. Similar to how satellite radio works, your receiver receives the signal and knows how to decode it. If you don’t pay they stop sending the decrypt key your radio needs to read most of the stations. It is all one-way. You put the decryption into into your auracast receiver and it knows how to receive it.

WH

Perhaps we are just spiting hairs, but you still have to log on to get the decryption key.

Does a satellite radio need to log on? Or does it get the current decryption key sent to it, based on one’s current subscription status.

At Bethel, we found clear audio distribution with excellent streaming range. We are using the Homespot Auracast transmitter. We are testing with multiple receivers, including Android with Samgung Galaxy Pro3 ear buds. We are trying to work with church members who are using hearing aids. Our old FM transmitter and receivers are so poor as to be useless. The Auracast units are so inexpensive, compared to other systems.

The Auracast streams are more like radio transmissions emanating from traditional FM station, the stream can be “heard” by multiple Auracast Bluetooth receivers at once. The Auracast transmitters support two kinds of stream, high quality and standard quality streams. The high quality stream allows encryption, if wanted. The format allows several devices to receive the same Bluetooth stream, where traditional Bluetooth supports two devices at a time. WiFi allows multiple devices to share a common bidirectional network which can include an Internet connection.

Well it seems to me that if you are typing in a code or QR code, you are logging in to a private broadcast. That seems to me like an interaction.

Now you may only have to do it once or until the code changes, but it’s still different from a public broadcast where you don’t have to log-in once.

You still have to type in a code even if the decryption key is built into the assistant. So you are still logging in, and you need that code to listen to a private broadcast.

Here’s an implication. There is no way to log the clients using your service, or even count how many use it or have the password set up.

WH

That’s irrelevant to the fact that you need to log-in using a password or some other code to access a private broadcast.

Technically, both HQ and SQ stream can be encrypted or be open. However, when we launched the first round of products in 2024/1H, it caused too much confusion to customers. Well even within the HomeSpot team for the BA210. Therefore, we then changed the factory settings to let HQ be encrypted (more for home/private listening), and SQ be open (more towards hearing aids users and public listening) for BA210 v2 in 2025, and let them switch between the two with a push switch.