Hello George,
Very simple answer: Hobby Horizon wants to sell their own FBL Controllers
The best alternative I found for a good telemetry and a regular Spektrum RX is this:
- AR8010 connected with SRXL to the Spirit
- A YGE 35 or 65A esc with a TexY Adapter on the X-Bus delivers rpm, amps, used cap, and voltage
- A backup voltage through the RX + temp. is also possible.
This setup woks fine on my newest helicopter project.
A Unisens-E Sensor would give the altitude in addition for app. the same amount of money, but it is harder to install.