Re: [time-nuts] Phase noise measurements on the cheap with an Agilent E4406A VSA Transmitter Tester?

HI It sort of depends on what offset frequency you are looking at. If you are after very wide band stuff at very low levels, the notch filter / spectrum analyzer approach has always been a good one. You may or may not need a low noise amp after the notch depending on the analyzer. Your notch

Re: [time-nuts] Phase noise measurements on the cheap with an Agilent E4406A VSA Transmitter Tester?

> I note your software works with the HP 7 too. As I say, I already have > one of them, but was thinking the E4406A would be a worthwhile addition. > But perhaps not in that case. Although maybe it will outperform my 7 > system for phase noise measurements. I expect you will know the

Re: [time-nuts] Phase noise measurements on the cheap with an Agilent E4406A VSA Transmitter Tester?

On 6/18/16 12:05 PM, Bob Camp wrote: Hi The Symmetricom Time Pod is pretty much the lowest cost commercial / newl “low phase noise” measurement instrument. You can find all sorts of older stuff on auction sites in who knows what shape. The HP 3048 is the granddaddy of them all. the time

Re: [time-nuts] Phase noise measurements on the cheap with an Agilent E4406A VSA Transmitter Tester?

On 18 June 2016 at 21:01, John Miles wrote: > > and looked at what was used to make the phase noise measurements. It was > an > > Agilent E4406A. The noise floor is nowhere near as low as the more > > expensive instruments, but the E4406A is available for under $500, which > is >

Re: [time-nuts] Phase noise measurements on the cheap with an Agilent E4406A VSA Transmitter Tester?

Hi The Symmetricom Time Pod is pretty much the lowest cost commercial / newl “low phase noise” measurement instrument. You can find all sorts of older stuff on auction sites in who knows what shape. The HP 3048 is the granddaddy of them all. Bob > On Jun 18, 2016, at 12:11 PM, Dr. David

Re: [time-nuts] Phase noise measurements on the cheap with an Agilent E4406A VSA Transmitter Tester?

> and looked at what was used to make the phase noise measurements. It was an > Agilent E4406A. The noise floor is nowhere near as low as the more > expensive instruments, but the E4406A is available for under $500, which is > more than two orders of magnitudes cheaper than an E5052B. It appears

[time-nuts] Phase noise measurements on the cheap with an Agilent E4406A VSA Transmitter Tester?

I was looking at some high end commercial low noise oscillators and see they use instrument like the Agilent E5052B signal source analyzer for phase noise measurements. When I looked for them on eBay, it soon because apparently they were very expensive. Then I see this oscillator that locks to