Protocol Number: 57
Autobind: No
Channel Re-mapping: No
Extended Limits: Yes
Failsafe Support: Yes
Receiver Match: Yes
Telemetry: Yes
Option Value: Frequency fine tuning
Frequency tuning is required for this protocol. See the Frequency Tuning page for more details.
Notes
Models: Graupner HoTT receivers (tested on GR-12, GR-12L, GR-16, and Vector)
Receiver feature configuration can be performed using the OpenTX script Graupner HoTT.lua.
Basic telemetry is available on OpenTX 2.3.3+ with receiver voltage, receiver temperature, RXRSSI, RX LQI, TX RSSI and TX LQI.
Lower TX LQI values indicate better link quality. TX LQI is a good indicator of how well the module is tuned.
You must use a different Receiver Number for each receiver. A maximum of 64 Hott receivers are supported.
Failsafe must be configured once with the desired channel values (hold or position) while the receiver is up (wait 10+ seconds for the receiver to learn the config) and then failsafe must be set to RX/Receiver otherwise the servos will jitter!
Channel Assignment
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
CH10
CH11
CH12
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
CH10
CH11
CH12
Sub Protocols
0 - Sync
Recommended for best telemetry performance.
1 - No_Sync
Telemetry compatibility mode which can be used when Sync does not work due to an old firmware on the RX.