78 Series Manual Multithrow Switch These DowKey manually operated switches are constructed with coaxial switching members rather than wafer switches. They are offered in SPDT, DPDT, SP3T, SP4T, and SP6T configurations, with the unused ports open (non-grounding). With RF power handling capabilities of 1 KW at 50 MHz and 60 dB isolation, the relay is ideal for use in low frequency, high power situations where signal integrity is a critical parameter and switching time of less importance. Typical applications for the 78 Series include: • Military/Commercial RF Communications • Laboratory Test Equipment • Video Viewing “Carrell” or Audition Room Source Selection • Patch Panels DowKey® 78 Series Manual Multithrow Switch RF Characteristics Specifications : Operating Temperature: 0ºC to +65ºC Normal Weight: 10.0 oz., (283g.) Frequency MHz VSWR (max) Isolation dB (min) Ins. Loss dB (max) RF Power Watts (CW) 50 100 225 450 1.10 1.15 1.25 1.45 60 55 45 40 0.03 0.05 0.10 0.15 1,000 1,000 600 450 Connectors and Part Numbers Connector Type SPDT DPDT SP3T SP4T SP6T N BNC UHF 78-0201 78-0202 78-0204 78-0701 78-0702 78-0704 78-0301 78-0302 78-0304 78-0401 78-0402 78-0404 78-0601 78-0602 78-0604 80 DowKey Microwave Corporation 1667 Walter Street, Ventura, California 93003 (805) 650-0260 • FAX (805) 650-1734 78 Series Mechanical Electrical 81 DowKey Microwave Corporation 1667 Walter Street, Ventura, California 93003 (805) 650-0260 • FAX (805) 650-1734