Happymodel EP1 Dual Receiver 2.4Ghz ExpressLRS RX

EP1 TCXO Receiver

Type: ISM2.4GHz
ESP8285 MCU
SX1280(SX1281)IMLTRT RF Module
Omni directional antenna
Frequency Range: 2400 MHz to 2500 MHz
Receive refresh rate: 25HZ~500Hz
Working voltage: 5v
Weight: 0.41 gram(without antenna)
Dimension: 10mm*10mm*6mm
Peak gain: 2.23dB
Default Firmware out of factory: HappyModel_EP_2400_RX V3.0.1 version
Built-in a TCXO (temperature compensated crystal oscillator)

EP2 TCXO Receiver

Type: ISM2.4GHz
ESP8285 MCU
SX1280(SX1281)IMLTRT RF Module
SMD Ceramic antenna
Frequency Range: 2400 MHz to 2500 MHz
Receive refresh rate: 25HZ~500Hz
Working voltage: 5v
Weight: 0.44 gram
Dimension: 10mm*10mm*6mm
Peak gain: 3.7dB
Default Firmware out of factory: HappyModel_EP_2400_RX V3.0.1 version
Built-in a TCXO (temperature compensated crystal oscillator)

EP1 Dual TCXO Receiver

Type: ISM2.4GHz
ESP32 PICO D4, dual SX1280(SX1281)
Antenna connector: IPEX MHF 1/U.FL
RF Frequency: 2.4GHz (2400~2480MHz)
Telemetry power: >19dbm
Receiver protocol: CRSF
Input voltage: 3.5~5V Recommend +5V DC @ “+” pad
PCB size: 19mm x 14mm
Weight: 1gram exclude antenna
Built-in a TCXO (temperature compensated crystal oscillator)
Default Firmware out of factory: Unified_ESP32_2400_RX  Could upgrade to HappyModel EP1 Dual 2400 RX 3.0 FW

Antenna

Frequency  (MHz)      2400.0
Efficiency (dBi)    -0.89
Gain (dBi)     2.23
Efficiency (%)       81.46
Directivity (dB)     5.12
Peak Gain Position (Theta)   180.00
Peak Gain Position (Phi)      330.00
Efficiency ThetaPol (%)       20.90
Efficiency PhiPol (%)   60.56
Upper Hem. Efficiency (%)  39.93
Lower Hem. Efficiency (%) 41.54
Connector IPEX/IPX/U.FL
Antenna width 52mm
Antenna length 40mm/90mm(optional)