DESCRIPTION

This 902-928MHz Cavity Filter is engineered to deliver critical interference protection for your Helium Network and 915MHz LoRaWAN systems. Designed with the professional installer in mind, it features an ultra-low insertion loss of 1.0dB and provides exceptional out-of-band suppression of 60dB at just 10MHz from the band edge. Housed in a rugged aluminum construction with N-Female connectors on both ports, this indoor filter ensures maximum signal integrity and system performance by effectively blocking strong adjacent interference from cellular and other RF services.

Why a High Out-of-Band Rejection Filter is Essential
The primary function of a filter is to eliminate interference signals. Therefore, the higher the out-of-band rejection and the closer this performance is to your working frequency band, the better. A filter that does not clearly specify this critical parameter is misleading; without significant rejection, it functions merely as a transmission line—offering low insertion loss but providing no real filtering protection for your network.

KEY FEATURES

Ultra-Low Insertion Loss: 1.0dB nominal loss preserves your valuable RF signal strength and hotspot efficiency.
High Out-of-Band Rejection: 60dB suppression near the band edge for effective blocking of close-in interference.
Built-In Surge Protection: Provides DC short circuit protection on RF ports, acting as a basic lightning arrestor.
Full Band Coverage: Optimized for the complete 902-928MHz (26MHz bandwidth) LoRa and Helium application range.
Robust Connectivity: Features N-Female connectors on both sides for reliable, low-loss connections in professional setups.

TECHNICAL SPECIFICATIONS

Parameter	Specification	Details / Benefit
Target Frequency Band	902 - 928 MHz	Perfect for Helium & North American LoRaWAN ISM band.
Insertion Loss	≤ 1.0 dB	Ultra-low loss maximizes power transfer to the antenna.
Out-of-Band Rejection	60 dB (at 10MHz offset)	High suppression of nearby interfering signals.
VSWR	≤ 1.5 (Typical)	Good impedance matching for minimal signal reflection.
Power Handling	20W (Typical)	Sufficient for standard transmitter power levels.
Port Protection	DC Short	Basic surge and lightning protector functionality.
RF Connectors	N-Female (x2)	Robust connectors for permanent, low-loss installations.
Housing Material	Rugged Aluminum	Durable construction for long-term reliability.
Intended Use	Indoor	For deployment in controlled environments.

INCLUDED

1 x 902-928MHz Cavity Filter

Professional 915MHz N-Female Cavity Filter for Helium Network | ≤1.0dB Ultra-Low Loss | 60dB High Rejection