Re: [time-nuts] injection locking crystal oscillator

2019-02-28 Thread Bob kb8tq
Hi How close to frequency is the 10 MHz oscillator? Is the crystal a fundamental? The degree you can injection lock an oscillator is (as Danna notes) a bit difficult to predict. Your chances improve if the oscillator is low(er) Q. They also improve if it is tuned very close to frequency.

Re: [time-nuts] injection locking crystal oscillator

2019-02-28 Thread Dana Whitlow
Hello Thomas, What you ask is possible, but only if the native crystal oscillator frequency is close enough to the signal from the GPSDO. You may have to tune the oscillator yourself to get it to lock, and you may or may not find that the result is predictable from day to day. This would depend

[time-nuts] injection locking crystal oscillator

2019-02-28 Thread Thomas S. Knutsen
Hello. I have a device that consists of a PLL, that has as its reference a 10MHz crystal. What I would like to do, is to inject this with 10MHz from a GPSDO, when that is available, and to use the internal crystal when that is not available. Would it be feasible to just connect it to one leg of

Re: [time-nuts] GN-GGB0710 GNSS Antenna

2019-02-28 Thread Peter Monta
My copy of this antenna has the correct threads, just as a data point. Serial number 1718010926. No date code that I can see, but it was delivered two weeks ago. Attached is the spectrum of the antenna looking at the sky, taken with an RTL-SDR dongle. There is some response at L5, but it's on

[time-nuts] Bulk Acoustic Wave (BAW) technology

2019-02-28 Thread John Moran, Scawby Design
Just been sent information on this technology by TI. Is it of any use/interest to TimeNuts? https://training.ti.com/introducing-tis-bulk-acoustic-wave-baw-resonator-technology ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go