FrSky Archer Plus SR6 Lite

In a word, this receiver is a smoking hot deal! Don't let the "lite" designation scare you, this only describes the size of the unit, this is a very powerful receiver for a great price! The SR6 Lite is a fully stabilized receiver that you can tune to meet your personal tastes, it is also a great 6 channel receiver, and if that wasn't enough it also has a built in high precision vario so you can chase varios and read AGL altitude! Frsky even packed her with Enhanced Anti-RF-Interference capability.

Here is what FrSky says about it:

The AP Lite-series 6-channel receivers feature a compact layout design in functions and are equipped with a 2.4G signal antenna. These receivers have 6 regular 3-Pin PWM signal output connectors on one end, and offer multiple function ports through SBUS In/Out, S.Port/FBUS, and AIN on the other end. 

Through the specific S.Port cable, the receivers can be easily connected to additional sensors, feeding telemetry to the transmitter. When the S.Port is set to FBUS mode all FBUS-capable devices can be directly configured through the ETHOS system using Lua script tools, and in FBUS mode, the receivers can output 24 signal channels in total.

The SR6L receivers are gyro-stabilized receivers with a built-in 3-axis gyroscope and 3-axis accelerometer and feature multiple flight modes (Auto-level, Stabilization, Knife-Edge, etc.). The stabilization mode has been enhanced with another set of stabilized channel groups (5 additional stabilization channels), providing pin mapping to each channel in the multiple flight modes.

(*Some features require the support of ACCESS and ETHOS.)

Link to manual: HERE

Features:

• Enhanced Anti-RF-Interference Capability with More Solid RF Performance
• Smart-matched ACCESS & ACCST D16 modes
• Built-in Stabilization Functions
• Built-in High-Precision Telemetry Sensor (Altitude, Vertical Speed, etc.) 
• 6 High-precision PWM Channel Ports
• SBUS Out Port (Supports 16CH/24CH mode)
• SBUS In Port (Supports Signal Redundancy)
• Full Control Range with Telemetry (FBUS/F.Port/S.Port)
• Over-The-Air (OTA) Firmware Update
• External Battery/Device Voltage Detection (AIN2)

Specifications: