The Bench / Channel planner
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VTX channel planner

Plan 5.8 GHz FPV channels for up to 6 simultaneous pilots. Flags conflicts where channels are too close (<40 MHz separation causes crosstalk).

Conflict analysis

Add at least 2 pilots to see conflict analysis.

Channel spacing rule: <40 MHz = guaranteed interference. 40–80 MHz = marginal. >80 MHz = clean. Raceband R1–R8 is most commonly used for multi-pilot flying.
Harmonics calculator

Your control link (ELRS, CRSF) generates harmonics that can corrupt specific FPV video channels. Enter your TX frequency to see which 5.8 GHz channels are affected.

MHz
MHz
MHz
MHz
Harmonics appear at N × fTX. A 915 MHz TX generates harmonics at 1830, 2745, 3660, 4575, 5490 MHz — right in the low end of the 5.8 GHz video band. A 433 MHz TX hits 5629 MHz (H13). This is why channel selection matters.
FPV range estimator

Friis transmission equation link budget for FPV and control link. Calculates usable range from TX power, antenna gains, frequency, and receiver sensitivity.

mW
dBi
dBi
MHz
dBm
dB
Fresnel zone calculator

The first Fresnel zone must be 60% clear of obstructions for a clean RF link. Calculate maximum zone radius at any point along the path.

m
MHz
%
The Fresnel zone is an ellipsoid around the direct LOS path. Obstructions (trees, terrain, buildings) within 60% of the first zone radius cause significant signal degradation. At 915 MHz over 1 km, the first zone radius at midpoint is ~10 m.
Dipole / antenna length

Calculate quarter-wave and half-wave antenna element lengths for any frequency. Account for velocity factor of coax or wire.

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VF
Closest channel finder

Find the nearest named FPV channel to any target frequency. Useful when operating on non-standard or modified bands.

MHz
VTX config generator

Generate ready-to-paste Betaflight vtxtable CLI commands for your VTX. Select your model, copy, paste into CLI.

Generated CLI commands

                
            

            

                Open Betaflight Configurator → CLI tab → paste commands → type save and press Enter. Requires Betaflight 4.1+.
            

        


        
        

            

                
 MafiaLRS firmware generator

                
Combat-adapted ELRS fork. Non-standard frequency operation (433–735 MHz) for EW evasion. Self-hosted target database.

            


            

                

                    
RX targets

                    
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TX targets

                    
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                What is MafiaLRS? A Ukrainian fork of ExpressLRS modified for combat operations. Key differences from stock ELRS: operates on 433 MHz, 490–560 MHz, and modified 868/915 MHz bands outside standard EW jamming coverage; frequency hopping modifications; actively maintained and battle-tested. Source: BUSHA/targets@mafia-targets.
            

        


        
        

            

                
 FC target matcher

                
Paste your Betaflight CLI status output to identify your flight controller target.

            

            

                

                    
                    
                    
                    
                

                

            

            

                How to get CLI output: Open Betaflight Configurator → CLI tab → type status → press Enter → copy all output and paste above.
            

        


        
        

            

                
 Unlock VTX table

                
Generate a region-unlocked vtxtable for Betaflight — all bands, all channels, all power levels.

            

            

                

                    
                    

                        
VTX Protocol

                        
                    

                    

                        
Max Power Level

                        
                    

                    

                        
Bands to include

                        
                        
                        
                        
                        
                    

                    
                

                

                    

                        
                        
                    

                    
                    
Paste into Betaflight CLI, then type save

                

            

        


        
        

            

                
 ELRS info

                
ExpressLRS hardware reference — frequency bands, common hardware, firmware links.

            

            


                

                    
2.4 GHz (most common)

                    

                        

                            Hardware
                            Type
                            Notes
                        

                        
RadioMaster RangerTX Module1W, JR bay

                        
RadioMaster Boxer/TX16SRadio (internal)250 mW internal

                        
BetaFPV SuperGTX ModuleGemini dual-antenna

                        
RP1/RP2/RP3/RP4RXNano form factor

                        
EP1 / EP2RXHappyModel, TCXO

                        
GEPRC Nano / GemXRXDual-band capable

                    

                


                

                    
900 MHz (long range)

                    

                        

                            Hardware
                            Type
                            Notes
                        

                        
RadioMaster BanditTX Module1W, 915/868 MHz

                        
HappyModel ES900TXTX ModuleJR nano bay

                        
HappyModel ES900RXRXNano, 915/868 MHz

                        
GEPRC Nano 900RXPA500, 500 mW

                        
BetaFPV SuperD 915RXTrue diversity

                        
iFlight 915 True DivRXDual antenna

                    

                


                

                    
Key settings reference

                    

                        

                            Setting
                            Recommended
                        

                        
Packet rate (2.4 GHz)500 Hz racing / 250 Hz general

                        
Packet rate (900 MHz)200 Hz / 100 Hz long range

                        
Switch modeWide (8ch) or HYBRID

                        
Telemetry ratio1:64 racing / 1:16 LR

                        
Max power (race)10–25 mW

                        
Max power (LR/field)250–1000 mW

                        
UART baud rate420000

                    

                


                

                    
Firmware & resources