Re: [time-nuts] Newbie question - what use is a Ruby?

2009-10-05 Thread Magnus Danielson
Scott Burris wrote: Murray Greenman wrote: 4. They are a handy adjunct to the GPSDO. Use the latter to calibrate the former, and then you've a reference even if GPS is unavailable. The Rb units also have very good short-term stability. So, how would you go about calibrating your Rubidium aga

Re: [time-nuts] Newbie question - what use is a Ruby?

2009-10-05 Thread Stijn
Hal, you are mean! That is about the way that i started with Time and Frequency, first a Z3801A and then a second one, then a rubidium and in the following a cesium standard. And further all the related measurement equipment. Just because I wanted to know as a radio amateur that I was precisely

Re: [time-nuts] Newbie question - what use is a Ruby?

2009-10-05 Thread Scott Burris
Murray Greenman wrote: 4. They are a handy adjunct to the GPSDO. Use the latter to calibrate the former, and then you've a reference even if GPS is unavailable. The Rb units also have very good short-term stability. So, how would you go about calibrating your Rubidium against your GPSDO? Pre

[time-nuts] Newbie question - what use is a Ruby?

2009-10-05 Thread Murray Greenman
Joseph, There are several uses for a Rb unit (even if you already have a GPSDO). 1. The Rb unit is very portable, and is on frequency from cold in 5 minutes. Great for tests away from home. Easily battery operated. No GPS antenna required either! 2. With fast warm-up, they are ideal as a referen