Bandpass Filter 20-30MHz Low Loss High Selectivity Narrowband Signal Filtering Module for Shortwave Radio SDR

This RF bandpass filter is specially designed for the 20-30MHz frequency range, ideal for HF and shortwave applications that require stable and reliable signal filtering.

Perfect for use with HF transceivers, shortwave receivers, SDR radios, amateur radio equipment, and other RF front-end systems requiring clean, selective signal reception in the 20-30MHz band.

Engineered to provide sharp bandpass characteristics with excellent out-of-band rejection while maintaining low insertion loss, helping to improve signal-to-noise ratio and reduce unwanted interference.

Helps filter out-of-band noise and nearby strong signals, reducing overload and distortion in receivers and front-end circuits, and enhancing overall reception clarity.

Suitable for RF development, lab testing, educational projects, ham radio experiments, SDR front-end filtering, and other communication systems working in the 20-30MHz frequency range.

**Core Product Specifications**

**Product Model:** 20-30 MHz RF Band-Pass Filter (BPF)

**Operating Frequency Band:** 20 MHz - 30 MHz (Precision Band-Pass)

**Interface Type:** Standard SMA-K (Female) Input / Output; Compatible with Mainstream RF Equipment

**Insertion Loss:** ≤ 1.0 dB (Low Loss; Minimal Signal Attenuation)

**Stopband Rejection:** ≥ 40 dB (Effectively Filters Out-of-Band Spurious Signals / Interference)

**Impedance Matching:** Standard 50 Ω (Compatible with Most RF Equipment / Antenna Systems)

**Operating Temperature:** -20°C to +70°C (Industrial-Grade Stability; Suitable for Diverse Environments)

**Product Dimensions:** Approx. 58 mm x 38 mm (PCB Board Dimensions; Compact and Space-Saving)

**Applicable Scenarios:** Shortwave SDR Receivers, Amateur Radio Stations, Radio Monitoring, RF Signal Purification

Colour: As Shown

Material: Plastic+Metal

Package Contents:

1*Bandpass Filter

Only the above package content, other products are not included.

Note: Light reflection and different displays may cause the colour of the item in the pictu