Note : Your Quotation Request will be directed to Penn Engineering.
The 1554 from Penn Engineering is a Waveguide to Coax Adapter with Frequency 3.30 to 4.90 GHz. More details for 1554 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.