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Block Down Converters

As a premier RF components supplier, RFComp provides high-performance Block Down Converters (BDC) designed to translate high-frequency signals (such as Ka, Ku, or X-band) to lower L-band frequencies with minimal distortion. These precision RF products are critical for satellite communications RF parts, radar, and high frequency RF systems, ensuring your receiver chain maintains maximum sensitivity and signal integrity in demanding aerospace and defense environments.
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Block Down Converters

Part Number RF Input Frequency (MHz) RF Output Frequency (MHz) Max. Input Power (dBm) Conversion Gain (dB) Internal LO Frequency (MHz) Phase Noise dBc/Hz @ 1 KHz DC Power (Volt) DC Power (mA)
HD26919 1800-3600 DC-1800 -5 -3 to +7 1800 -93 12 350 Download
HD32485 1950-3900 DC-1950 1950
HD26920 2400-4800 DC-2400 2400 -92
HD26921 3200-6400 DC-3200 -7 -5 to +5 3200 -80 300

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Custom BDC Engineering

Modifications & Mission-Critical Signal Translation

Precision Engineering & Modifications:

We specialize in custom RF solutions for specific frequency offsets. Our RF component engineering team can customize LO frequencies and gain profiles to match your unique RF system integration services.

Extreme Environment Resilience:

From high-altitude UAV flight to shipboard satellite terminals, our BDCs are built as high reliability RF parts that maintain phase lock in high-vibration environments.

SWaP-C Optimization:

We offer compact, lightweight housings designed to reduce Size, Weight, and Power for modern aerospace and portable RF infrastructure components.

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Choosing the Right Block Down Converter

Critical Factors for Frequency Translation Success Selecting the correct BDC is vital for your RF system integration services. Our RF & microwave product expert team recommends focusing on these spectral parameters: Conversion Gain & Flatness: Our BDCs offer high stable gain with excellent flatness across the band, ensuring your RF link components deliver consistent signal levels to the indoor unit (IDU). Phase Noise & Local Oscillator (LO) Stability: Essential for high-order modulation in 5G systems and satellite communications. We use high-stability internal reference oscillators to minimize jitter. Noise Figure (NF): Built as high performance RF components, our BDCs prioritize low noise figures to preserve the Signal-to-Noise Ratio (SNR) of weak incoming satellite signals. Input/Output Interface: Available with a variety of RF connector types (SMA, N-Type, F-Type) and waveguide inputs to match your waveguide to coax adaptors and existing infrastructure.

Block Down Converter Technical Questions

What is the primary purpose of a Block Down Converter?
A BDC takes a whole “block” of frequencies and shifts them lower in the spectrum. This allows signals from satellite communications RF parts to be transmitted over standard RF coax cable assemblies with significantly less path loss.
Yes. For high-precision military RF components, many of our models feature an external 10 MHz reference input to ensure perfect synchronization with your high frequency RF systems.
Absolutely. Our BDCs are designed as high reliability RF parts, featuring IP67-rated weatherproofing and wide operating temperature ranges for mission-critical defense and maritime use.

What Our Customers Say

“The phase noise performance on RFComp’s Ka-Band BDCs is remarkable. They have become our primary RF technology supplier for our next-gen satellite ground stations.”

Lead RF Architect

Global Aerospace Prime

“We needed a custom frequency translation for a specialized defense project. RFComp’s New York engineering team delivered a high-gain, low-noise solution on a mission-critical schedule.”

Senior Test Engineer

Semiconductor Testing Services

“Reliability is everything in the field. RFComp’s Block Down Converters have survived extreme temperature cycles without a single frequency drift incident.”

Director of Operations

Telecommunications Infrastructure Co.

Experience the RFComp Difference

Whether you need a single BDC for a lab prototype or 1,000 units for a global satellite rollout, RFComp is ready to support your mission. Our New York-based engineering team specializes in high-performance RF and microwave solutions that meet the exact demands of your 2026 project schedule.
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  • 1-631-588-3877
  • sales@rfcomp.com
  • Syosset, NY 11791

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