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Made in the USA

CIR Enterprises, Inc. is a Colorado based, family owned business with over 40 years of combined RF experience. Our company is dedicated to providing premier customer service. We offer a wide range of services to meet your project needs.

CIR Refurbished Modular Solid Wall RF Shielded Rooms

CIR RF Shielded Rooms

Solid Wall

Refurbished RF Shielded Rooms

Modular Enclosures to Size Required

The CIR shielded rooms will provide up to 100db min. of attenuation from 14 KHz to 10 GHz when subject to electric fields and plane waves.

We specialize in shielded enclosure manufacturing, modification, refurbishment, installation, and RF testing.

CIR manufactures and installs steel clad, clamp together, shielded enclosures.

We recommend the steel clad system because, with its sturdy construction, it is easily modified.

Enclosures

All Sheet Modular Steel Chambers

3/4 MDF 28 gauge Steel Panels

CIR Manufactured Waveguides

CIR Manufactured Pen Panel/Bulkhead

Can be made to any size you require

100dB to 40GHz doors, when available

We are always looking for good used RF shielded doors. If you have any Universal, RayProof, Braden, ETS-Lindgren (knife edge) doors to sell.

Please send us an email.

CIR-101008 RF Shielded Room For Sale

CIR Enterprises

Refurbished

RF Shielded Room

100 DB from 14 KHz to 10 GHz

10' Wide x 10' Long x 8' High

For Industrial, Communication, and
Research and Development Applications

Price: $13,895.00 (Kit Price)

Price: $15,500.00 (Kit Price, with New Door)

Installation is Available

Rigid Solid Wall, Free-Standing, Modular RF Shielded Enclosure, Floor, walls and ceiling are all solid wall panels.

	Designed to meet such high performance requirements as pager, cordless and wireless repair, cellular system production, security, research, and EMI/RFI testing and calibration.
	Includes:

	One (1) 3' x 7' Single Knife Edge Door (Refurbished)
	One (1) 12" x 12" Blank Penetration Panel
	One (1) 30 Amp filter (two wire)
	One (1) ground stud
	Two (2) 12" x 12" waveguide vents for air flow.
	New panels and structural framing
	New poly and masonite underlayment
	New bronze wool and flashing for seams. (Included in price)

Typical Shielding Attenuation Characteristics

Model

Magnetic

15KHz

Electric/Plane Waves

10KHz to 1GHz

Microwave

10GHz

CIR

55dB

100dB

Shielding Effectiveness (dB)	Attenuation Ratio		Percent Attenuation
20		10 : 1		90.0
40		100 : 1		99.0
60		1,000 : 1		99.9
80		10,000 : 1		99.99
100		100,000 : 1		99.999
120		1,000,000 : 1		99.9999

Shielding effectiveness values are expressed in logarithmic, not linear, terms. Therefore, 80 dB of shielding effectiveness is not double the 40 dB level, but 100 times greater. Another way to express effectiveness is attenuation ratio, which compares the attenuation signal strength outside and inside the shield as shown below.