GEPRC RX-as-TX JR-Bay Modification Kit - Upgrade Your Radio with Ease!

Want to turn your receiver into a transmitter module? The GEPRC RX-as-TX JR-Bay Modification Kit lets you do just that. Whether you're experimenting with new RF setups or just maximizing the potential of your gear, this mod kit allows a receiver to function as a JR-bay-compatible TX module —without requiring an engineering degree. Available in two versions :

✔ 3D Printed Kit - Includes a custom 3D-printed enclosure for a cleaner, more durable installation.
✔ Basic Kit - A no-frills version with just the essentials for those who prefer a DIY approach.

Key Features:

✔ Receiver to Transmitter Conversion - Repurpose your receiver and use it as a TX module in your JR-bay radio.
✔ Universal Compatibility - Designed to fit most JR-style module bays for easy plug-and-play functionality.
✔ Durable 3D-Printed Construction - Lightweight yet sturdy, ensuring a secure fit without adding bulk.
✔ For Tinkerers & DIY Enthusiasts - Ideal for FPV pilots who love to push the limits of their gear.
✔ Solder-Free Installation - No complicated wiring or technical wizardry required—just snap it in and go.

Specifications:

• Model: GEPRC RX as TX JR-Bay Modification Kit
• Expansion Bay: JR Bay
• Input Voltage: 2-6S
• Output Voltage: 5V@1A
• Housing Material: PLA
• Number of Antennas: Dual antennas
• Compatible Receivers: Receivers using ESP32 or ESP32-C3 chips
• Connection Method: Soldering, SH1.0 connectors, pogo pins

Installation method

1. Open the ExpressLRS Configurator or navigate to the ELRS online flashing website: https://expresslrs.github.io/web-flasher/ ;
2. Select the corresponding receiver model;
3. In the advanced settings, enable the "RX as TX" option and set it to "external" TX;
4. Follow the standard flashing procedure to install the "RX as TX" firmware;
5. Connect the receiver's GND, 5V, TX to the JR-Bay Modification Kit's GND, 5V, and SP respectively.
6. After rebooting, the receiver will function as a TX module.

What's in the Box?

Basic Kit Includes

• 1 x RX as TX JR Bay PCBA board
• 2 x 915M/2.4G dual-band T-antennas
• 2 x IPEX1 to SMA right-angle cables (outer thread, inner hole)
• 1 x Cooling fan
• 1 x 4-pin pogo pin
• 1 x 4-pin silicone cable
• 6 x M2*5 screws
• 8 x M1.4*6 self-tapping screws
• 8 x M1.4*8 self-tapping screws

3D-Printed Kit Includes

• 1 x 3D-printed bottom shell for RX as TX JR Bay
• 1 x 3D-printed top cover for RX as TX JR Bay
• 1 x 3D-printed mounting base for GEPRC GemX Gemini receiver
• 1 x 3D-printed top cover for GEPRC GemX Gemini receiver
• 1 x 3D-printed mounting base for GEPRC DUAL 915M Diversity receiver
• 1 x 3D-printed top cover for GEPRC DUAL 915M Diversity receiver
• 1 x 3D-printed 5-pin connector mounting part
• 1 x RX as TX JR Bay PCBA board
• 2 x 915M/2.4G dual-band T-antennas
• 2 x IPEX1 to SMA right-angle cables (outer thread, inner hole)
• 1 x Cooling fan
• 1 x 4-pin pogo pin
• 1 x 4-pin silicone cable
• 6 x M2*5 screws
• 8 x M1.4*6 phillips self-tapping screws
• 8 x M1.4*8 phillips self-tapping screws

⚠ Disclaimer: Included accessories may vary depending on stock availability.