GR-24 HoTT - 2.4 GHz receiver

Kyosho GR-24 HoTT 12-channel 2.4 GHz receiver

The Graupner GR-24 is a 12-channel 2.4 GHz receiver developed for HoTT radio systems, and it suits all types of applications – including large warbirds and large-scale gliders. The receiver provides constant, real-time information on receiver voltage, temperature and signal strength, which is sent back to the transmitter without the need for extra sensors.

The system has a dual, full-range 2.4 GHz diversity antenna system that continuously switches to the best antenna signal and uses the most recently used antenna to receive the telemetry downlink. This ensures that the return channel data is always sent via the best-placed antenna, so telemetry information is available throughout the flight.

HoTT (Hopping Telemetry Transmission) is based on frequency hopping spread spectrum technology (FHSS) with up to 75 channel changes, which gives high operational reliability and immunity to external interference. The system offers integrated real-time telemetry and is fully programmable via the Smartbox. The GR-24 also supports digital output (SUMD, SUMDV3, SUMDIN, SUMO, SUMI, SBUS) for flight controllers such as V-Stabi, Microbeast, Brain, Bavarian Demon, 3Digi, Naze and others.

Features

• Up to 75 channel changes for high operational reliability and immunity to external interference
• Wide voltage range of 3.6 V - 8.4 V (functional down to 2.5 V) for safe operation during voltage fluctuations
• Dual power connection
• Wireless setup and access technology
• LED display of operating status
• Increased receiver sensitivity with vertical range of up to 4,000 metres
• Easy, front-facing servo connection
• Fail-safe, hold, OFF and standard programmable directly from the transmitter or receiver (channel 1: fail-safe; all others: hold)
• Programmable warning thresholds for low voltage and for low or high temperature
• Wireless real-time flight data logging
• Ultra-fast rebinding with a HoTT radio
• Digital output (SUMD, SUMDV3, SUMDIN, SUMO, SUMI, SBUS) on input or output connector
• Selectable frame rates between 10ms and 20ms
• Compact and light

System properties (HoTT)

• Simple and extremely fast binding
• Range test and low-voltage warning
• Extremely wide operating voltage range from 3.6 V to 8.4 V (functional down to 2.5 V)
• Failsafe with free channel mapping
• Binding of any number of receivers for channel expansion (max. 32 channels)
• Up to 4 servos can be controlled simultaneously in blocks with a servo cycle time of 10 ms (digital servos only)
• Maximum noise immunity thanks to optimised frequency hopping and wide channel spread
• Extremely fast rebinding, even at maximum distance
• Real-time telemetry evaluation
• Future-proof with update option via USB interface

Technical data

• Temperature range: -15 to +70 °C
• Antenna length: 2 x 145 mm (antenna 30)
• Total weight, approx.: 16 g
• Frequency: 2400 - 2483.5 MHz
• Range, approx.: 4,000 m
• Dimensions: 46 x 31 x 14 mm
• Modulation: 2.4 GHz FHSS
• Current draw: 70 mA
• Supply voltage: (2.5) 3.6 - 8.4 V

We ship with GLS:

From our warehouse in Denmark.
Shipping is calculated at checkout.
Business customers are welcome.