Keysight 11901A 2.4mm to 3.5mm adapter serial 14427 shown upright beside clear protective storage tube with red cap

Keysight 11901A front face view showing 2.4mm male gold centre pin and threaded connector interface

Keysight 11901A rear face view showing 3.5mm male silver-finish threaded connector end with centre pin

Tested

14 Day Money Back Guarantee

Great Value

Global Shipping

Keysight Agilent 11901A 2.4 mm (m) to 3.5 mm (m) DC to 26.5 GHz

Name: Keysight Agilent 11901A 2.4 mm (m) to 3.5 mm (m) DC to 26.5 GHz
Brand: Keysight Agilent
SKU: 3970 7D04 ER88
Price: 106.25 GBP
Availability: InStock

The Keysight 11901A is a metrology-grade RF adapter converting 2.4 mm male to 3.5 mm male connections across DC to 26.5 GHz.
• Superior RF performance: >26 dB return loss and -54 dB repeatability
• Ultra-compact form factor — 20.9 mm overall length, 9.0 mm diameter
• Ideal for VNA calibration, signal analysis, and precision microwave measurements

Manufacturer

Keysight Agilent

Model

11901A

Condition

Used

In stock

SKU

3970 7D04

£106.25

Connectors & Cables
RF & Microwave
RF Components

Make an Offer

Keysight Agilent 11901A 2.4 mm (m) to 3.5 mm (m) DC to 26.5 GHz

£106.25

Condition: Used

The Keysight 11901A is a metrology-grade coaxial adapter bridging 2.4 mm male and 3.5 mm male connector interfaces. It operates from DC to 26.5 GHz, offering superior RF performance with >26 dB return loss, -54 dB repeatability, and an electrical length of 16.1 mm. Serial number 14427 is visible on the body.

Included in the sale:
• 1x Keysight 11901A 2.4 mm (m) to 3.5 mm (m) adapter (serial no. 14427)
• 1x Protective clear plastic storage tube with red cap

Please note that we have multiple units in stock, and the images presented are of one of them, therefore the cosmetic condition of the exact item you will receive may slightly differ.

Product Overview

Condition: Used

Included in the sale:
• 1x Keysight 11901A 2.4 mm (m) to 3.5 mm (m) adapter (serial no. 14427)
• 1x Protective clear plastic storage tube with red cap

Please note that we have multiple units in stock, and the images presented are of one of them, therefore the cosmetic condition of the exact item you will receive may slightly differ.

Manufacturer's Description

The Keysight (formerly Agilent) 11901A is a metrology-grade coaxial adapter designed to interface 2.4 mm male and 3.5 mm male (APC-3.5) connector types. It provides reliable, low-loss RF signal interconnection across a wide frequency range and is suited for use with vector network analysers (VNAs), spectrum analysers, signal generators, and other precision RF/microwave test equipment. The adapter is commonly used in calibration, device characterisation, R&D, and production test environments where maintaining signal integrity across connector transitions is critical.

Connector Type: 2.4 mm male (one end), 3.5 mm male / APC-3.5 male (other end)
Frequency Range: DC to 26.5 GHz
Characteristic Impedance: 50 Ohm
Return Loss: > 26 dB
Repeatability: -54 dB
Electrical Length: 16.1 mm (0.63 in)
Overall Length: 20.9 mm (0.82 in)
Diameter: 9.0 mm (0.35 in)
Grade: Metrology

Resources

Shipping & Returns

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, and the email should include the order number, date and reason for return 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 which case we will arrange a prepaid return label.

Ready to Get Started?

What you get

Quality products, tested and accurately described by our in-house experts. Carefully packed and shipped worldwide.

Shipping & Returns

You can use the shipping rates calculator in product details to estimate shipping cost. See our Returns page for other details.

Still Unsure?

Feel free to have any additional questions you might have about the product. We're available via chat, email or phone.

Refurbishment Process

Every product at TT Instruments goes through a unique process before it's made available for sale. Check it out!

Frequently Asked Questions

The price is too high, can I make an offer on this product?

Yes, we accept offers on most of our products. You can send us an offer by contacting us.

Are there any defects with the items you sell?

The equipment we sell will normally be used and so it is essential you carefully read the description and review the images, if there are any cosmetic defects or otherwise we will Cleary state this within the description and display it in the images.

Do you ship overseas?

Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. Most orders are delivered within one week.

How long will it take to get my orders?

UK: 1-2 working days
Mainland Europe, US & Canada : 2-3 working days
Rest of the world: 5 working days

Subject to customs

Please refer to our detailed shipping policy.

How does customs work?

Orders may be subject to import taxes/duties. You'll need to check local authorities for accurate information on this.

What is your return policy on used equipment?

Most of our products are eligible for a 14 day return period from delivery date. (if the product is not as described).

Please refer to our detailed shipping and returns policy.

See all FAQs

Please see our detailed FAQs page

ISO Certified

We are proud to hold the ISO 9001:2015 certification by a UKAS accredited body.

Sell Your Equipment

Receive best prices for your un-used/surplus equipment. Talk to one of our experts for a hassle-free transaction

Worldwide delivery

We deliver on an express service globally with most packages delivered in less than a week

Customer Satisfaction

We pride ourselves in providing an excellent service from start to finish.

Top Rated Seller

Our feedback says it all! We have shipped to over 100 countries all over the world and our customers couldn't be happier!