If you want a 'vintage' solution, the HP 5087A can be configured to take a single 5 or 10 MHz and divide/multiply it to 10 MHz, 5 MHz, 1 MHz and even 0.1 MHz then feed that to various output amplifiers of 10, 5, 1 or 0.1 for up to 12 total outputs of your configuration. However, you might be looking for a long time to find all the right cards.
Joe -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of arie schellaars Sent: Tuesday, July 28, 2009 3:40 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] What's the cleanest way to produce 1 and 5 MHz from10 MHz? Hi people I too needed a 1MHz reference to drive my HP5245L counter. I simply fed the t.bolt's 10 MHz output into a single transistor amp to obtain 5V p.p and divided down using a TTL 7490 chip. This I followed with a six stage Chebichev 1Mhz low pass filter to "knock-off" the rough "corner" spots and this fed into the counter. It all seems to work with accurate readings from a known frequency source out of the counter. It's simple but perhaps not too elegant Cheers Arie VK3DBF --- On Tue, 28/7/09, David Kirkby <david.kir...@onetel.net> wrote: From: David Kirkby <david.kir...@onetel.net> Subject: [time-nuts] What's the cleanest way to produce 1 and 5 MHz from 10 MHz? To: time-nuts@febo.com Received: Tuesday, 28 July, 2009, 12:32 AM A friend of mine has a GPS receiver with a Stanford PRS 10 rubidium as a frequency standard he uses for his test equipment - mainly signal generators, spectrum analysers etc. Most kit takes a 10 MHz sine wave. Some of his kit needs 1 MHz and other bits 5 MHz. What is the cleanest way to derive these frequencies from 10 MHz. I would suspect a number like 10, which is not a power of 2, would present more of a problem. I don't know what kit he has that needs 1 or 5 MHz,so I don't know how fussy it is. Dave _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ____________________________________________________________________________ ________ Access Yahoo!7 Mail on your mobile. Anytime. Anywhere. Show me how: http://au.mobile.yahoo.com/mail _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.