On 1 Nov 2014 16:50, "Jim Lux" <jimlux@earthlink.net> wrote: behind a scintillator) > > The 40 GHz stuff these days is not nearly as exotic as it used to be. The challenge might be test equipment when you're debugging your 40 GHz synthesis chain. There's a fair amount of test equipment around to 40.0 GHz, but it is not cheap even on the used market. But above 40.0 GHz it gets even more expensive, as a lot of kit stops there. So a spectrum analyzer that works to 40.1 GHz is going to cost serious money. I don't know what ones chances of feeding 10.04 MHz into the 10 MHz reference input to 40 GHz test equipment to make it work to 40*10.04/10=40.16 GHz. I suspect that you could get away with it. Dave.

Dave, On 11/03/2014 01:29 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: > On 1 Nov 2014 16:50, "Jim Lux" <jimlux@earthlink.net> wrote: > behind a scintillator) >> >> The 40 GHz stuff these days is not nearly as exotic as it used to be. The > challenge might be test equipment when you're debugging your 40 GHz > synthesis chain. > > There's a fair amount of test equipment around to 40.0 GHz, but it is not > cheap even on the used market. But above 40.0 GHz it gets even more > expensive, as a lot of kit stops there. So a spectrum analyzer that works > to 40.1 GHz is going to cost serious money. > > I don't know what ones chances of feeding 10.04 MHz into the 10 MHz > reference input to 40 GHz test equipment to make it work to > 40*10.04/10=40.16 GHz. I suspect that you could get away with it. It would not really be needed. Only if you would be using a 40,5 GHz oscillator and steer it, that 40 GHz would be exposed. However, I would not be surprised if a source in the 100 MHz to 1 GHz range or so would be used as an intermediary clock to a big 5 MHz fly-wheel. Naturally that intermediary could be synthesized. There are many ways to go about it. Cheers, Magnus

what power is need at 40GHz? 73 Alex On 11/2/2014 4:44 PM, Magnus Danielson wrote: > Dave, > > On 11/03/2014 01:29 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: >> On 1 Nov 2014 16:50, "Jim Lux" <jimlux@earthlink.net> wrote: >> behind a scintillator) >>> >>> The 40 GHz stuff these days is not nearly as exotic as it used to >>> be. The >> challenge might be test equipment when you're debugging your 40 GHz >> synthesis chain. >> >> There's a fair amount of test equipment around to 40.0 GHz, but it is >> not >> cheap even on the used market. But above 40.0 GHz it gets even more >> expensive, as a lot of kit stops there. So a spectrum analyzer that >> works >> to 40.1 GHz is going to cost serious money. >> >> I don't know what ones chances of feeding 10.04 MHz into the 10 MHz >> reference input to 40 GHz test equipment to make it work to >> 40*10.04/10=40.16 GHz. I suspect that you could get away with it. > > It would not really be needed. Only if you would be using a 40,5 GHz > oscillator and steer it, that 40 GHz would be exposed. However, I > would not be surprised if a source in the 100 MHz to 1 GHz range or so > would be used as an intermediary clock to a big 5 MHz fly-wheel. > Naturally that intermediary could be synthesized. There are many ways > to go about it. > > Cheers, > Magnus > _______________________________________________ > 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.