Re: [time-nuts] Fake new LPRO 101 Rb's on Ebay?

2020-02-05 Thread Christoph Kopetzky
They are definitely not new as stated in the item state. In the description you can read at every seller "used item"... So the brandnew state is only a price leader. In addition there are several seller (you.are.you, cncdeals5 and color-fashion-6) with small price differences and shipping costs

Re: [time-nuts] GPSDO that isn't GPS locked for large time scales?

2020-02-05 Thread Tim Shoppa
Many of the Chinese E-bay GPSDO's are frequency-locked, not phase-locked. I believe yours in question, is frequency locked. The seller's description certainly shows that his only goal was frequency and not phase. Sometimes I joke to Tom that maybe we should call this list "phase nuts" and not "ti

Re: [time-nuts] GPSDO that isn't GPS locked for large time scales?

2020-02-05 Thread jimlux
On 2/4/20 4:23 PM, AC0XU (Jim) wrote: Time Nuts- I recently purchased (Ebay) a GPSDO from an overseas manufacturer. This is a new item and the Ebay description seemed quite encouraging. Having had one in the lab for several weeks what I observe is that: 1) ADEV for short to medium durations (

Re: [time-nuts] GPSDO that isn't GPS locked for large time scales?

2020-02-05 Thread Bob kb8tq
Hi More or less what the seller is doing is a simple FLL. It appears he does not have an integrator on it so it will hit an ADEV floor and never get any better than that. Bob > On Feb 4, 2020, at 7:23 PM, AC0XU (Jim) wrote: > > Time Nuts- > > I recently purchased (Ebay) a GPSDO from an ove

Re: [time-nuts] Yesterday was the first palindromic date for 909 years

2020-02-05 Thread Bill Slade
At the time, the year would have been written as MCXI, so no palindrome would have been possible! 😉 Bill From: time-nuts on behalf of Bill Metzenthen Sent: Wednesday, February 5, 2020 1:17 AM To: time-nuts@lists.febo.com Subject: Re: [time-nuts] Yesterday

[time-nuts] GPSDO that isn't GPS locked for large time scales?

2020-02-05 Thread AC0XU (Jim)
Time Nuts- I recently purchased (Ebay) a GPSDO from an overseas manufacturer. This is a new item and the Ebay description seemed quite encouraging. Having had one in the lab for several weeks what I observe is that: 1) ADEV for short to medium durations (Tau <1,000 sec) is comparable to or bet