60 Series SPDT Switch The DowKey 60 Series coaxial relays are ruggedly constructed and designed for operation to a maximum power level of 1 kilowatt. They have been the standard for air traffic control and two way radio systems for over forty years. Also available in the 60 Series is a patented, high isolation option (“G” option) for transmit-receive applications. This option leaves the unused input open, and increases the isolation on the N/C connector to 85 dB at frequencies up to 500 MHz. This option reduces the maximum power rating of the N/C connector to 20 Watts, and will increase the VSWR of this terminal above approximately 400 MHz. They are available with or without two form “C” auxiliary contacts. DowKey® 60 Series SPDT Switch Typical applications for the 60 Series include: • Transmit-Receive Switching • Communication Antenna Switching • Video Switching • Hot Standby Transmitters or Receivers RF Characteristics Specifications : Operating Voltage: (across temperature range) 12 Vdc (11-14 Vdc) 28 Vdc (24-32 Vdc) Coil Current (Nominal): 12 Vdc 250 mA 28 Vdc 108 mA Operate Time: 20 mS maximum Operating Temperature: 0ºC to +65ºC Mechanical Life, Cycles: 1 x 106 minimum Nominal Weight: 12.0 oz., (340g.) Frequency MHz VSWR (max) Isolation dB (min) Ins. Loss dB (max) RF Power Watts (CW) 50 100 400 1,000 1.10 1.15 1.30 1.60 40 35 25 20 0.10 0.15 0.20 0.25 1,000 1,000 500 350 Connectors and Part Numbers Nominal Coil Connector Voltage Type SPDT SPDT w/DPDT Aux. Contacts “G” Option “G” Option w/DPDT Aux. Con. 12 Vdc 28 Vdc 115 Vac N N N 60-2201 60-2301 60-2601 60-220142 60-230142 60-260142 60-2225 60-2325 60-2625 60-222542 60-232542 60-262542 12 Vdc 28 Vdc 115 Vac BNC BNC BNC 60-2202 60-2302 60-2602 60-220242 60-230242 60-260242 60-2226 60-2326 60-2626 60-222642 60-232642 60-262642 12 Vdc 28 Vdc 115 Vac UHF* UHF* UHF* 60-2204 60-2304 60-2604 60-220442 60-230442 60-260442 60-2228 60-2328 60-2628 60-222842 60-232842 60-262842 *Not recommended for applications above 300 MHz. 70 DowKey Microwave Corporation 1667 Walter Street, Ventura, California 93003 (805) 650-0260 • FAX (805) 650-1734 60 Series Mechanical Electrical 71 DowKey Microwave Corporation 1667 Walter Street, Ventura, California 93003 (805) 650-0260 • FAX (805) 650-1734