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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 :
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3D Printed Kit
- Includes a custom 3D-printed enclosure for a cleaner, more durable installation.
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Basic Kit
- A no-frills version with just the essentials for those who prefer a DIY approach.
Key Features:
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Receiver to Transmitter Conversion
- Repurpose your receiver and use it as a TX module in your JR-bay radio.
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Universal Compatibility
- Designed to fit most JR-style module bays for easy plug-and-play functionality.
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Durable 3D-Printed Construction
- Lightweight yet sturdy, ensuring a secure fit without adding bulk.
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For Tinkerers & DIY Enthusiasts
- Ideal for FPV pilots who love to push the limits of their gear.
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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
- Open the ExpressLRS Configurator or navigate to the ELRS online flashing website: https://expresslrs.github.io/web-flasher/ ;
- Select the corresponding receiver model;
- In the advanced settings, enable the "RX as TX" option and set it to "external" TX;
- Follow the standard flashing procedure to install the "RX as TX" firmware;
- Connect the receiver's GND, 5V, TX to the JR-Bay Modification Kit's GND, 5V, and SP respectively.
- 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.