HGLRC Herme ExpressLRS: ELRS TX/RX (900MHz/2.4GHz)

HGLRC Herme ExpressLRS TX and RX

After Happymodel and BetaFPV, HGLRC also announced their first ExpressLRS enabled radio system. Like its contenders, the Herme ExpressLRS also has 900Mhz and 2.4GHz versions. ExpressLRS (ELRS) is an open-source RC link for various applications, including drone communications. ELRS uses LoRa modulation with strong anti-interference technology to achieve long-range transmission with low power usage.

HGLRC claims that the Herme ExpressLRS 2400TX is currently the module with the lowest delay and the highest refresh rate on the market. It has an ultra-high refresh rate of up to 500Hz and is specially designed for FPV racing. The HGLRC ELRS TX is compatible with OpenTX enabled transmitters and an external TX module bay (JR standard 5pin socket). The ExpressLRS firmware can be updated via WIFI connection (at IP address).

Both, RX and TX modules are using T-type omnidirectional antennas. The Herme 2400TX module measures 68×48.5×8 mm and weighs 37.5 grams. The ELRS 900RX and 2400RX receiver modules weights less than 1 gram and uses CRSF protocol.

HGLRC Herme ELRS 2400TX Specifications

Frequency Range 2400 MHz
Receiving refresh rate 25Hz-500Hz
RF Output Power 10dBm – 24dBm
Antenna gain 2dBi
Input voltage 6.5-17V
WiFi configuration Yes
Connectors USB Type C and XT30
TX socket JR standard 5pin socket
Size 68×48.5×8 mm
Weight 37.5g (without antenna)

HGLRC ELRS 900RX and 2400RX

HGLRC Herme ELRS 900RX and 2400RX Specifications

Herme ELRS RX 900RX 2400RX
Frequency range 868MHz 2400 MHz
Receiving refresh rate 25Hz-500Hz 25Hz-500Hz
Receiving protocol CRSF CRSF
Antenna gain 2dBi 2dBi
Antenna type 915Mhz omnidirectional T 2.4GHz omnidirectional T
Antenna connector IPEX IPEX
Size 16.5x10x3 mm 15x11x3 mm
Weight 0.4 grams 0.7 grams


      • I’m afraid that’s not the case. 900 for range and penetration. 2.4ghz for lowest possible latency, smaller antenna sizes and much less chances of interference from other pilots (many more up in the air at the same time)

        For the record…the reason behind 900mhz being good for penetration is the same reason why it’s better for long range. (Partially)


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