-----Original Message----- From: Gordon,Ian [mailto:[email protected]] Sent: Monday, April 23, 2007 4:09 AM To: 'IEEE EMC & SAFETY PSTC' Subject: RF Switch
All We have two amplifiers: one which goes from 80MHz to 1GHz and a new one which goes from 0.8 to 3GHz. Can anyone suggest where I might find a suitable switch that would ideally be controlled by RS232/USB/IEEE 488 which would allow me to change between amplifiers at, for example 1GHz during the test? A manual switch would be acceptable but not ideal. Ian Gordon Ian: Coax relays for 3 GHz are not rare. You can drive relays from the IEE-488 bus with something like HP's old HP-11713A Switch Driver. You can also find discrete interfaces for Serial & USB, quite cheaply, from hobbyist and amateur robotics sources. Take a look at advertisers in Nuts & Volts magazine at http://www.nutsvolts.com/ Take a look at their archive of articles at http://www.nutsvolts.com/ftpindex.htm See April 2007, June 2006 & June 2005 for a start. If you want to switch the amplifier OUTPUT, the relays will be a bit expensive. What power amplifiers do you have? Ed Price [email protected] WB6WSN NARTE Certified EMC Engineer & Technician Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (FAX) Military & Avionics EMC Is Our Specialty ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
