Note : Your Quotation Request will be directed to Microwave Engineering Corporation.
The B40 from Microwave Engineering Corporation is a Waveguide to Coax Adapter with Frequency 3.30 to 4.90 GHz. More details for B40 can be seen below.
1.85mm, 2.4mm and 2.92mm Waveguide to Coax Adapters Operating Up to 65GHz
You can now find similar products from multiple companies on everything RF.