Condition: Used

The ARRA D9844-40 is a used mid-size continuously variable coaxial attenuator in excellent condition. It covers the full Ku-band frequency range of 12.4–18.0 GHz with a 40 dB attenuation range, a maximum VSWR of 1.50, and a maximum insertion loss of 0.50 dB. Supplied in Standard Form Factor 4061.

Supplied as pictured. Typically includes:
• ARRA D9844-40 variable attenuator unit

The ARRA D9844 is part of ARRA's (Antenna & Randome Research Associates) mid-size continuously variable coaxial attenuator series, covering the frequency range of 0.5–18 GHz. ARRA has been a global innovator in designing and manufacturing coaxial and waveguide components for over 60 years, supplying commercial and military customers worldwide.

The D9844 series attenuators use ARRA's proprietary non-contacting dissipative material technology, which delivers wear-free performance and high reliability across extremely wide temperature ranges with minimal change in attenuation characteristics. Attenuation is achieved in a non-contacting manner, making these units ideal for long-term set-and-lock applications as well as panel-mount use.

The standard Form 4061 package features a non-translating 1/4" diameter shaft with lock nut, achieving full attenuation in less than 20 turns. Optional package configurations include panel-mount (P prefix, Form 0-1654), turns-counting (T prefix, Form 0-1524), and digital counter (D prefix, Form 0-3347) versions. Most models in this series have been qualified for military applications and meet MIL-Q-9858A and MIL-I-45208 quality standards.

Key Specifications (D9844-40):
Frequency Range: 12.4–18.0 GHz
Attenuation Range: 0–40 dB
Insertion Loss (Max): 0.50 dB
VSWR (Max): 1.50
Standard Form Factor: 4061
Shaft: Non-translating 1/4" diameter with lock nut
Full Attenuation: Achieved in less than 20 turns
Connector Type: SMA (typical for this frequency range)
Impedance: 50 Ohm
Package Options: Standard, Panel-Mount, Turns-Counting, Digital Counter
Military Qualification: Qualified for military applications
Quality Standard: MIL-Q-9858A, MIL-I-45208

Typical Applications:
- Laboratory signal level control and testing
- Radar and satellite (Ku-band) system development
- Antenna and receiver test benches
- Microwave system integration and calibration
- Military and aerospace RF test setups

Please refer to the manufacturers website for more information.

Shipping & Returns Policy

Shipping Policy

• Processing Time: Orders are typically processed and dispatched within 1 business day.
• Shipping Methods: We offer Expedited Shipping to all destinations using UPS/DHL/Fedex/Royal Mail and other reputable carriers.
• Shipping Times: Mainland UK: 1-2 Business Days / Mainland Europe and USA: 2-3 Business Days / Rest of the World 5-7 Business Days.
• Shipping Costs: These are calculated at checkout based on the shipping method, destination and package dimensions.
• CUSTOMS AND TAXES: It is YOUR responsibility to liaise with customs in your country and ensure your package is cleared and any taxes are paid.
• Shipping Destinations: We ship worldwide.
• Tracking: Once your order is shipped, we will provide you with a tracking number via email.
• Insurance: All shipments are insured. In case of damage, please contact us via email within 48 hours of receiving the product with photographic evidence, please also ensure a report is logged with the delivery driver.

Returns Policy

• Return Period: In the event of an item being received which is 'not as specified', you can return your purchase within 14 days of delivery.
• Condition of Items: Items must be returned unused and in their original packaging.
• Return Method: All returns must be notified in writing to hello@ttinstruments.com, the email should accompany the order number, date and reason for return and must be within 14 days of delivery.
• Restocking Fees: A restocking fee of up-to 20% is applicable for items returned for any reason other than 'not as specified'.
• Refund Method: Refunds are processed to the original method of payment within 5 business days of receiving the return.
• Exchanges: We do not offer exchanges. It will either be a replacement or a refund.
• Return Shipping Costs: Return shipping costs will be borne by the customer unless the item is 'not as specified', in this case we will arrange for the return by way of a prepaid shipping label.