Flysky NB4+/NB4 Pro+ DragRacing FRM303 range extender Power Amplifier Module Distance Amplifier Module Mount signal enhancer
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Frequently Asked Questions
FRM303 Module Mount User Manual
https://soarskyrc.com/blogs/technology-sharing/flysky-nb4-nb4-pro-dragracing-frm303-high-power-module-mount-installation-guide
Does the FRM303 Module Mount support charging?
Yes, it supports charging. It can charge 18650 batteries via the side Type-C interface. Charging takes approximately 4-5 hours, with a charging power of 5V-1.5A.
What does it mean when the red, blue, and green lights on the FRM303 tuner are flashing?
It indicates low battery. Please charge the 18650 battery.
What does it mean when the red light on the FRM303 tuner is flashing?
It's a warning of a signal input error. The FRM303 needs to be set to recognize PPM signals. Setting method: FRM303 supports switching between serial signals, PPM signals and S.BUS signals. The setting steps are as follows: 1. Push upwards the Up key for ≥ 3S and < 9S while powering on the RF module, it enters the input signal setting state. Now LED in blue is on. 2. Push upwards the Up key or push downwards the Down key to switch the input signal. LED flashing states vary with signals as shown in the table below. 3. Press the Center key for 3S to save the settings. Push the Left key to exit the signal setting state. Blue LED Color: One-flash-one-off represents the recognition input signal PPM
What's in the Box
- 1x Cooling fan
- 4x Fan mounting screws
- 2x NB4 Pro+ Base side protective frames
- 1x NB4 Pro+ Base front protective frame
- 1x NB4 Pro+ Base rear protective frame
- 4x NB4 Pro+ protective frame screws — Hex 2.0mm
- 1x NB4 Pro+ Base front protective frame mount
- 4x NB4 Pro+ Base front protective frame mount screws — Hex 1.5mm
- 1x Signal conversion board bracket
- 4x Signal conversion board bracket screws — Hex 2.0mm
- 1x Signal conversion board fixing rod
- 2x 18650 battery
- 1x Signal conversion board
- 1x FRM303 signal cable
- 2x FRM303 mounting screws — Hex 1.0mm
- 1x Type-C cable
Let customers speak for us
Description
This product's protective frame only includes the Bottom Protector, not the Top Protector.
If you need to purchase the Top Protector or Bottom Protector separately (excluding the Module Mount), you can do so via this link.
Top Protector:
FLYSKY controller radio NB4 Pro/NB4 Pro+ Noble metal protector combo
Module Version: Select the appropriate Bottom Protector based on your transmitter. For NB4+ and NB4 Pro, due to different base battery sizes, you need to select the corresponding Module Version.
FRM303 Version: The FRM303 has two options: Standard version and No FRM303.
The Standard version includes the FRM303 high-frequency module, antenna, etc., as shown in the following image:
The Standard version option is suitable for users who have not previously purchased the FRM303.
Worry-free version
The No FRM303 option is suitable for users who have already purchased the FRM303 but do not have the high-frequency module.
Product Highlights:
1. A great partner for high-speed racing cars, using the FRM303 to support up to 2W transmitter power, eliminating control distance issues. Ground control distance will exceed 1km.
2. Adjustable angle adapter; the high-frequency module can accommodate various angles.
3. The module mount circuit board supports 18650 rechargeable batteries and features a low battery indicator.
4. Compatible with metal base protective frames.
5. The module mount supports Type-C, audio, and USB-A interfaces.
6. Supports FS-G11P/NB4 Pro+/NB4+.
7. The base protective frame supports NB4 Pro+ or NB4+ base batteries.
Its working principle is to configure the Type-C data interface of the NB4+/NB4 Pro+ to output a PPM signal (NB4+/NB4 Pro coaching function), and the FRM303 is configured to recognize the PPM signal.
Parts List
- Cooling fan x 1
- Fan mounting screws x 4
- NB4 Pro+ Base side protective frames x 2
- NB4 Pro+ Base front protective frame x 1
- NB4 Pro+ Base rear protective frame x 1
- NB4 Pro+ protective frame screws x 4 (Hex 2.0mm)
- NB4 Pro+ Base front protective frame mount x 1
- NB4 Pro+ Base front protective frame mount screws x 4 (Hex 1.5mm)
- Signal conversion board bracket x 1
- Signal conversion board bracket screws x 4 (Hex 2.0mm)
- Signal conversion board fixing rod x 1
- 18650 battery x 2
- Signal conversion board x 1
- FRM303 signal cable x 1
- FRM303 mounting screws x 2 (Hex 1.0mm)
- Type-C cable x 1
Shipping Info
🏭 Fulfillment Warehouses
SoarSky operates warehouses in the US, Europe, and China. Orders are fulfilled from the nearest local warehouse. If local stock is unavailable, your order will ship from our China warehouse and international shipping times will apply.
💰 Shipping Rates
| Type | Condition | Cost |
|---|---|---|
| Free Shipping | Orders over $100 | Free |
| Standard Shipping | Orders under $100 | Based on weight & address |
| International Shipping | All international orders | Based on destination & weight |
⏱️ Dispatch & Delivery Times
| Region | Estimated Delivery |
|---|---|
| Domestic (US) | 5–10 business days |
| International | 10–15 business days |
* Customs processing may affect international delivery times.
🚫 Shipping Restrictions
Some remote areas may experience longer delivery times or limited shipping options. We will notify you if any issues arise.
📦 Order Tracking
Once your order ships, you will receive a confirmation email with a tracking number. Track your shipment via:
| Platform | Link |
|---|---|
| 17Track | www.17track.net |
| SoarSky Order Tracker | soarskyrc.com/pages/track-order-1 |
📬 Contact Us
If you encounter any issues such as damaged items or lost packages, please contact our customer service team as soon as possible and we will work to resolve it promptly.