15/05/2013 13:13 Is there any fairly easy way to multiply the output of a Thunderbolt to have a 500MHz reference at about 4dBm? Thanks. -- Best Regards, Chris Wilson. mailto: chris@chriswilson.tv

I would have to say one of the modern clock/pll chips as easy as its going to get. otherwise its the conventional multiply and filter. Now with some humor it depends on what you think easy is. There are other aspects that you have not shared with respect to the quality of the signal and its use case. These could make a very large difference in the direction you want to take. Regards Paul WB8TSL On Wed, May 15, 2013 at 8:14 AM, Chris Wilson <chris@chriswilson.tv> wrote: > > > 15/05/2013 13:13 > > Is there any fairly easy way to multiply the output of a Thunderbolt to > have a 500MHz reference at about 4dBm? Thanks. > > -- > Best Regards, > Chris Wilson. > mailto: chris@chriswilson.tv > > _______________________________________________ > 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. >

If easy means a temporary lashup, takes but one piece of gear. The Ballantine 6130A time mark generator takes in 10 MHz, produces from it a synchronous 1Hz to 500MHz selectable in 1-2-5 steps. I've not tested mine for phase noise, probably not the best performer... but for $35 not a big concern, given my needs. Shameless plug: I'll have another one for sale at the Dayton Hamvention, flea market space 1901. There will be other Time Nuts in residence at 1901 as well. Bob LaJeunesse ________________________________ From: Chris Wilson <chris@chriswilson.tv> To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Sent: Wed, May 15, 2013 8:15:15 AM Subject: [time-nuts] Trimble Thunderbolt, any easy way to create 500 MHz reference from one? 15/05/2013 13:13 Is there any fairly easy way to multiply the output of a Thunderbolt to have a 500MHz reference at about 4dBm? Thanks. -- Best Regards, Chris Wilson. mailto: chris@chriswilson.tv _______________________________________________ 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.

15/05/2013 13:13

There are a number of phase-locked oscillators over on the "evil empire" that might do, but if you need exactly 500 MHz, you might not find that one so easily. I found one that had outputs of 72.5, 725 and 7,975 MHz that locks to my GPSDO. Very useful for checking Frequency Counters, Service Monitors and the like. 73, Dick, W1KSZ On 5/15/2013 5:14 AM, Chris Wilson wrote: > > 15/05/2013 13:13 > > Is there any fairly easy way to multiply the output of a Thunderbolt to > have a 500MHz reference at about 4dBm? Thanks. >

> Is there any fairly easy way to multiply the output of a Thunderbolt to > have a 500MHz reference at about 4dBm? Thanks. Chris, If you already have or are planning to make a standalone 500 MHz local oscillator, you could divide this by 50 and *replace* the TBolt 10 MHz OCXO similar to what John did (http://www.ke5fx.com/tbolt.htm). That way the TBolt does all the phase locking and disciplining for you, for free. /tvb