CS-5020KKa Millimeter Wave Downconverters


GS Customer Support

Features & Benefits

  • 18to 40 GHz coverage
  • 2 to 18 GHz IF output
  • Low phase noise
  • Direct frequency callout with CS-5020C/CS-5040
  • COMINT/ELINT applications



Option 1 – Preamplifier



Low noise figure with medium gain


Ultra-low noise figure with high gain

Option 2 – Antenna



Horn antenna


Omni-directional antenna

Option 3

Special mounting configuration

Option 4

RF input connector type


RF Input Frequency

18 - 40 GHz


2.5:1 max


WRD-180 with UG-1587/U flange;

"K" connector (option 4)

Noise Figure

17 dB (standard version)

6 dB (option 1a)

3.5 dB (option 1b)


17 dB (standard version)

33 dB (option 1a)

39 dB (option 1b)

Input 3rd Order Intercept

+5 dBm (standard version)

-20 dBm (option 1a)

-25 dBm (option 1b)

Integrated Phase Noise 100 Hz - 25 Mhz

1.5° RMS max

Image Rejection

40 dB min

Output Frequency

2 - 18 GHz

Output Connector

SMA female

Reference Input Frequency

240 MHz

Reference Input Level

0 ±3 dBm

Control/Power Connector

10-pin "Lemo"

Preamp Connector (Opt 1)

2-pin "Lemo" (+15 VDC)

Physical Specs


4.2 x 4.2 x 4.2 in
(10.7 x 10.7 x 10.7 cm)


4 pounds (1.8 kg)


Input Power


            +15 Vdc

8 W max (standard)
13.5 W max w/preamp (option 1)

            -15 Vdc

0.75 W max


Operating Temperature

0 to +50°C

Non-Operating Temperature

-40 to +85°C

Typical System

Main Components

Please contact Rockwell Collins for additional information on this product.

Related Documents


A complete range of technical information is available to support your operation and maintenance needs. The technical publications index allows you to identify the most current version of a publication, service bulletin or related document by part number, equipment type, system and similar functions. To search the index, use the global search box in the upper right corner of the page. If necessary, click the Pubs and Training tab to see results from the technical publications index.

You can also continue to use our legacy index.

Authorized users of the technical publications index can also view all of their pubs on our dashboard. Just log in, then move your mouse over the My Account menu button and choose Dashboard.


Our instructional design specialists and staff of experienced instructors have developed and support your operator and maintenance training requirements. We offer a host of solutions to maximize your investment. On-site and customized training are available.

Our Learning Management System allows you to review course schedules for Instructor Led Training (ILT) and computer based training (CBT) offerings. Register as a student and enroll or take courses online. A username and password is required.

Contact a representative.

Services & Support

Field Support Services

Our customer service engineers (CSEs) and global network of service centers and dealers provide you with the support you need for your personal aircraft, corporate aircraft or commercial air carrier.

Contact a representative
Contact a dealer
Learn more

Tailored Services

Collins Aerospace facilities and capabilities allow us to offer a variety of support solutions from time and material repairs to price per flight hour asset management solutions. What ever your operational objectives, we have a solution to support your life cycle service requirements.

Contact a representative


We offer a broad portfolio of service solutions, tailored to meet your specific operational objectives. Rockwell Collins' Dispatch program is an extended warranty program based on a price per flight hour, and is customized to fit your needs. The program supports regional and commercial airlines and provides you with around the clock service. Managing your spares and parts, we offer you guaranteed availability to ensure you have the necessary parts on time.

Contact a representative.

Maintenance & Repair

Collins Aerospace Service Centers are strategically located throughout the world to provide maintenance on our equipment, both in and out of warranty. Overhaul and repair service can also be obtained at each location. As new products are introduced, service center capabilities are continually updated to support them. Located within each Service Center is a dedicated Customer Service Representative, available to answer questions or address problems.

To access a list of our global service locations access our Repair Equipment Directory 

If you would like information how to order repair parts or receive a quote, follow the link to the online shop.  

Spares & Parts

Our world-wide Rental/Exchange Service is ready to provide for your operational needs—24 hours a day, 7 days a week. We offer an extensive asset inventory and support system to deploy parts where and when you need them.

Phone: 1-800-713-7693 (within the U.S. only) or 1-319-295-4361
Fax: 1-319-295-6646
Email: rentalexchange@rockwellcollins.com

Access our Rental and Exchange Catalog. Registration is required.

To order Repair Parts or receive a quote, follow the link to the online shop.

Chat balloon - Click corresponding link to view contactsContacts


GS Customer Support