Low Pass Filter for 900MHz Antennas
Best interference solution for FPV drone pilots using 900MHz video systems.
Enhance your 900MHz video system with this RMRC Low Pass Filter. Designed for optimal performance, it significantly reduces interference that can affect 2.4GHz RC systems, servo stability, and GPS reception. Its robust resin-filled can construction ensures high durability while maintaining an ultra-lightweight profile. This filter offers excellent attenuation in critical frequency bands, including -25dB at 1.5GHz and -39dB at 2.4GHz, with minimal insertion loss in the 900MHz operating band. Featuring standard SMA connectors and 10W power handling, it's an essential upgrade for clean FPV operation.
$43.99
Owner Satisfaction
4.6
/ 5
Category Rank
105
/ 221
#105 in Electronic Filters
Price vs Category Average
-82%
Below average
Filter Type
Low Pass
/ Low Pass
Who it's for
- FPV pilots seeking crystal-clear video and telemetry range
- Drone builders protecting sensitive GPS and control hardware
- Weight-conscious pilots fitting gear into cramped airframes
Who should skip it
- Beginners intimidated by extra soldering and wiring steps
- Operators using 1.3GHz, 2.4GHz, or 5.8GHz video systems
- Long-range enthusiasts chasing every last decibel of signal strength
Performance breakdown
Signal Purity
Aggressive attenuation effectively cleans up noise for clearer video transmission.
Interference Mitigation
Significantly protects 2.4GHz control links from 900MHz harmonic bleed.
Power Efficiency
Minimal insertion loss ensures maximum signal strength reaches your antenna.
Durability
Resin-filled construction provides rugged protection against harsh flight environments.
Weight Profile
Ultra-lightweight design adds negligible mass to sensitive FPV aircraft.
Thermal Resilience
Wide operating temperature range handles extreme conditions without performance degradation.
Key Specs
Filter Type
Low Pass
Filter Topology
Low Pass
Characteristic Impedance
50 Ohm
Insertion Loss (900MHz Band)
< 0.7dB
Stopband Attenuation
-25dB at 1.5GHz, -39dB at 2.4GHz
Max Power Handling
10W
Connectors
SMA
Operating Temperature Range
-55C to 100C
Features
- Ultra-lightweight design (<10g)
- Highly durable resin-filled can
- Optimized for 900MHz transmitters
- Strong GPS frequency filtering
- Reduces interference with 2.4GHz systems
- Low insertion loss in passband
- Standard SMA connectors
- Handles up to 10W power
What customers say
Customers consistently praise this RMRC low pass filter for its exceptional reliability in cleaning up signal interference, especially when dealing with harmonics near 900MHz. Users report a noticeable improvement in video clarity and signal integrity, confirming the product’s high performance quality. The build is frequently mentioned as robust and durable, ensuring long term function. It is seen as an essential component that simply works as expected, justifying the purchase for serious hobbyists seeking clean RF environments.
Know before you buy
Yes, this filter is specifically designed to reduce interference in the GPS frequency bands. By cleaning up the signal from your 900MHz transmitter, it helps maintain a stable GPS lock during flight.
This filter is intended for 900MHz video systems, but it is highly effective at preventing those systems from interfering with your 2.4GHz RC control link. It provides -39dB of attenuation at 2.4GHz, which significantly reduces the risk of signal desensitization.
No, the filter is engineered for minimal insertion loss, measuring less than 0.7dB in the 900MHz band. This ensures that your video signal remains strong and clear without sacrificing range.
Yes, the unit features a resin-filled can construction. This design provides excellent protection against vibration and environmental factors while keeping the total weight under 10 grams.
This filter is rated to handle up to 10W of power. It is suitable for most standard FPV video transmitters, but you should always verify your transmitter's output power before installation.
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$44