Reliable RF Protection for VHF, UHF, and L-Band Systems
Amphenol Procom has expanded its trusted line of RF protection products with the updated PRO-LPZ Low-Pass Filter range, now including the PRO-LPZ 175, PRO-LPZ 470, and the new PRO-LPZ 1450.
These filters are designed to deliver consistent and dependable performance for mission-critical communication systems across VHF, UHF, and L-Band frequencies.
Why It Matters
Modern communication systems face constant challenges from interference and unwanted harmonics.
The PRO-LPZ series addresses these issues by:
- Blocking harmonics and spurious signals that degrade signal clarity.
- Attenuating external interference up to 8 GHz for enhanced signal integrity.
- Offering a compact, rugged design built for demanding environments such as defense, transportation, and public safety networks.
Each model in the range is engineered to ensure clear, interference-free operation even in harsh RF conditions.

What’s New: PRO-LPZ 1450
The newest addition, the PRO-LPZ 1450, extends the protection into the L-Band range, supporting frequencies from 1100–1450 MHz.
Key features:
- Stopband rejection greater than 60 dB from 2.5–8 GHz.
- Ideal for L-Band applications such as surveillance, telemetry, and satellite communication.
- Provides a clean passband and strong out-of-band suppression for dependable signal performance.
This makes it a top choice for engineers needing reliable low-pass filtering in systems where precision and noise control are critical.
The Full Range at a Glance
| Model | Frequency Range | Stopband Rejection | Typical Use |
|---|---|---|---|
| PRO-LPZ 175 | Pass band : 135 – 175 MHz Stop band : 350 MHz – 8 GHz | > 60 dB | VHF systems |
| PRO-LPZ 470 | Pass band: 380 – 470 MHz Stop band: 760 MHz – 8 GHz | > 45 dB @ 760 MHz > 60 dB @ 940 MHz | UHF systems |
| PRO-LPZ 1450 | Pass band: 1100 – 1450 MHz Stop band: 2.5 – 8 GHz | > 45 dB @ 2.2 GHz >60 dB @ 2.5 GHz | L-Band systems |
Each product is field-tested to meet the high reliability standards demanded by professional users.
Explore the Data Sheets
For detailed specifications and performance data:
Summary
The PRO-LPZ range reinforces Amphenol Procom’s commitment to delivering high-performance RF components for the world’s most demanding applications. Whether you’re optimizing a VHF radio system or building a next-generation L-Band network, these filters ensure your communication stays clear, stable, and secure.





