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Waveguide Cross Guide Couplers Multiple Outputs  General Specifications Form Factor  Models General Information This series of cross-guide directional couplers offer two more coupled outputs with customer selected coupling values for each arm. The coupled output port can be waveguide or coaxial. Directivity can be optimized over specified frequency ranges. General Specifications Directivity (See Gen Info) 15 dB min Freq Sensitivity ±1.3 dB max Coupling 20 - 60 dB available VSWR Main Line 1.15 max 1.20 for WR42 thru 28 WG Output 1.15 max 1.20 for WR42 thru 28 Coaxial Output 1.25 max 1.30 for WR42 thru 28 Finish ARRA Blue per MIL-C-22750 Model 42-603-A-2-2-30FSF-30RSF-50FSF   Typical Model Number     Flange   Coupling Series Matl   In   Out   Arm 1 Arm 2 90-603 - A - 1 - 2 - 40 F2 50 RNF   Coupling Arm Designation dB Direction   Output 40 F or R NF Model Number Codes Material WG Flange Coaxial Conn A - Aluminum B - Brass C - OFHC Copper S - Coin Silver 1 - Cover 2 - Choke 3 - CPR-F 4 - CPR-G 5 - CMR 6 - UBR 7 - PBR 8 - CBR 9 - Special SF - SMA (F) SM - SMA (M) NM - N (M) NF - N (F) Y - Other