Note : Your Quotation Request will be directed to L-3 Narda-ATM.
The 187-253A-6 from L-3 Narda-ATM is a Waveguide to Coax Adapter with Frequency 3.95 to 5.85 GHz, Power 200 W, Peak Power 3 KW, Insertion Loss 0.15 dB. More details for 187-253A-6 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.