webhorus is an experimental receiver for horusbinary balloon telemetry. Audio in Javascript is very hard to support across multiple devices and platforms. As such please don't rely on this working reliably. Consider using Horus-GUI where possible. Ensure receiver testing has been done prior to launching any balloon.

A writeup on how this project was created is found on my (xssfox) blog.

The source code of webhorus can be found on the Project Horus GitHub

RTL-SDR is only available on browsers that support Web USB API which currently is only Chrome and Chrome based browsers. RTL-SDR support is provided through the extremely well written libraries by Jacobo Tarrío from their Radio Receiver project. Wenet can also be decoded by selecting "RTL-SDR (Wenet)" in the General Configuration.

Windows users intending to use RTL-SDR input need to ensure that the WinUSB driver is installed for the RTL-SDR device. This can be done using the Zadig tool. If your SDR works in SDR#, SDR++ and other SDR tools then you or the tool has probably already done this.
Issues have been reported when using Firefox/Gecko based browsers on some Android devices including but not limited to Motorola. It could be related to this bug listed on Mozilla's bugtracker. Users have reported success using Chrome/Chromium based browsers instead.

If unsure or unknown select "Wenet Traditional"