Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

2016-09-14 Thread Charles Steinmetz
Just wanted to add, their US distributor has one with a custom xtal that claims even lower phase noise and has provided a plot comparing the two I see the US distributor says the "custom" unit's phase noise "improv[es] on an already impressive figure" of the stock unit. But in reality, even

[time-nuts] Need 10 MHz for DSN space-probe hunting

2016-09-14 Thread Mark Sims
One thing you can do with a Thunderbolt is to let it settle into to disciplined equilibrium to 10.000 MHz, check the DAC voltage serring, and then switch off disciplining and manually control the EFC DAC. This will improve the phase noise at the expense of frequency drift which may or may

Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

2016-09-14 Thread STR .
>Briefly, Mike, there's an easy to use unit here, which takes a puck GPS >antenna and can run off USB +5V: > http://www.leobodnar.com/shop/index.php?main_page=product_info_id=234 > >Perhaps it might meet your needs? > >Cheers, >David Just wanted to add, their US distributor has one with a custom

Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

2016-09-14 Thread David J Taylor
Mike already mentioned he has a Thunderbolt. That product you referenced only has phase noise measurements down to 100Hz offset, but comparing to the Thunderbolt phase noise measurements that Tom posted at the link below, a Thunderbolt running on a good quality linear power supply has about 20dB

Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

2016-09-13 Thread Bob Camp
Hi A more significant issue with the output of the TBolt for direct microwave multiplication is the spurs on the output. When multiplied up to > 1 GHz, these are going to be a major issue. There are a lot of conventional techniques for taking care of this. If you have not already employed

Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

2016-09-13 Thread jimlux
On 9/13/16 2:35 PM, Andy ZL3AG wrote: That sounds like fun! Do they have a mailing list they hang out on? yes.. amateur-dsn https://groups.yahoo.com/neo/groups/amateur-DSN/info https://eyes.nasa.gov/dsn/dsn.html On 14/09/2016, at 5:04 AM, Mike Baker wrote: Hello, Time-Nutters--

Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

2016-09-13 Thread bownes
Just shipped out three new systems for $DAY_JOB to Goldstone, Madrid and Canberra. Love it when work and time nuts intersect. > On Sep 13, 2016, at 17:35, Andy ZL3AG wrote: > > > That sounds like fun! > > Do they have a mailing list they hang out on? > >

Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

2016-09-13 Thread Andy ZL3AG
That sounds like fun! Do they have a mailing list they hang out on? https://eyes.nasa.gov/dsn/dsn.html On 14/09/2016, at 5:04 AM, Mike Baker wrote: > Hello, Time-Nutters-- > > Full disclosure-- I am a complete newbie at understanding the > intricacies of generating a really stable, low

Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

2016-09-13 Thread Chris Caudle
On Tue, September 13, 2016 2:24 pm, taylor david wrote: > Briefly, Mike, there's an easy to use unit here, which takes a puck GPS > antenna and can run off USB +5V: > > http://www.leobodnar.com/shop/index.php?main_page=product_info_id=234 Mike already mentioned he has a Thunderbolt. That

Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

2016-09-13 Thread jimlux
On 9/13/16 10:04 AM, Mike Baker wrote: Hello, Time-Nutters-- Full disclosure-- I am a complete newbie at understanding the intricacies of generating a really stable, low phase noise, accurate frequency reference for microwave reception up around the 8 GHz DSN (Deep Space Network) band. I have

Re: [time-nuts] Need 10 MHz for DSN space-probe hunting

2016-09-13 Thread taylor david
> Hello, Time-Nutters-- > > Full disclosure-- I am a complete newbie at understanding the > intricacies of generating a really stable, low phase noise, accurate > frequency reference for microwave reception up around the 8 GHz > DSN (Deep Space Network) band. I have been following the back >

[time-nuts] Need 10 MHz for DSN space-probe hunting

2016-09-13 Thread Mike Baker
Hello, Time-Nutters-- Full disclosure-- I am a complete newbie at understanding the intricacies of generating a really stable, low phase noise, accurate frequency reference for microwave reception up around the 8 GHz DSN (Deep Space Network) band. I have been following the back and forth