[time-nuts] (no subject)

Hi, I'm a new list member. I'm also very new to timing and synchronization. I am looking for a standard to lock a 10 GHz gunnplexer to. I am an amateur experimenter and by necessity must do things inexpensively. I am looking at a Symmetricon rubidium atomic clock standard on ebay now. The

Re: [time-nuts] FMT

Hi Colin -- Actually, the transmitters used for the FMT seem to be very stable and as far as I've been able to observe (during each of the 4 FMTs since they restarted the event) don't drift by a noticeable amount during the test. I'm actually more concerned about the ARRL's measurement setup

[time-nuts] Symmetricom Rubidium Standard

Sorry, I forgot to provide a subject in last post. -- Forwarded Message: -- From: [EMAIL PROTECTED] To: time-nuts@febo.com Date: Fri, 10 Nov 2006 18:10:05 + Hi, I'm a new list member. I'm also very new to timing and synchronization. I am looking for a standard

Re: [time-nuts] FMT

Personnaly, i use a self-developed technique to remotely measure a station's frequency: I use a precision OXCO controlled RF signal generator to inject an unmodulated (CW) signal (via a directional coupler) signal 1000 Hz below the actual station's frequency (example, to monitor CHU at 7335 kHz,

Re: [time-nuts] (no subject)

FWIW - I would not bid on this. Lousy photo, no documentation, and just not a complete unit. Rob K -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: 10 November 2006 18:10 To: time-nuts@febo.com Subject: [time-nuts] (no subject)

Re: [time-nuts] FMT

Hi Normand -- Your method is similar to mine, except that I use a much closer beat note (usually less than 100 Hz) and use spectrum analyzer software and a sound card to measure the beat note (in the form of the delta between two traces on the waterfall display). I think one of the reasons

[time-nuts] Z3801A

Unless you actually need portability, you might look for an HP Z3801 or similar GPS-stabilized quartz standard. I haven't seen one on ebay for a while. Are they still available? Where? Is there a good alternate I should be considering? -- The suespammers.org mail server is located in

Re: [time-nuts] Z3801A

Hello! I am also looking for a GPS disciplined standard... what about the Lucent/ Efratom RFTG-m-XO ? Regards, JOSE At 13:21 10/11/2006 -0800, you wrote: Unless you actually need portability, you might look for an HP Z3801 or similar GPS-stabilized quartz standard. I haven't seen one on

Re: [time-nuts] Z3801A

I noticed that the same seller who had the rubidium cell also had an HP 58533A for sale: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=290047717429 Don't know anything about those, but it looks a LOT like a Trimble Thunderbolt. If it's built by HP to the same standards and specifications as

Re: [time-nuts] FMT

I think one of the reasons this method works so well is that the FFT effectively averages the signal over some time, and I use a tool in the software to derive an average across all the FFT results. That smooths out the instantaneous variations that make real-time measurement such a

Re: [time-nuts] FMT

Hal Murray said the following on 11/10/2006 04:52 PM: I think one of the reasons this method works so well is that the FFT effectively averages the signal over some time, and I use a tool in the software to derive an average across all the FFT results. That smooths out the instantaneous

Re: [time-nuts] FMT

John and I use a similar technique. I am running Windows so I use DL4YHF's Spectrum Lab FFT software. Spectrum Lab will output each line of the waterfall display to a tab delimited text file. Using the function peak_f(f1,f2) I output the frequency of the peak within F1 and F2 to the file. I

[time-nuts] HP 5061A going up for sale

Just wanted to let all of you know in case some one spots it on ebay. I am listing an HP 5061A on there. It has a dead tube so I didn't figure any of you would be interested in it. Also, the oscillator is one of the old rectangular 105 style. The oscillator is good though. I didn't try to run

[time-nuts] I need help with strange result in HP Z3801A

Hello I am new to the list (been reading a lot) My HP Z3801A went wild a couple of days ago and I cannot figure out what happened The graph is showing 5 days There has been no power problems (it is on a large UPS) I controlled it's environment by putting it in a small refrigerator with

Re: [time-nuts] FMT

Hi Mike, Interesting, I was just doing pretty much that, except that I did not think of using the tracking generator of the 3586A as a reference, I used an 8657B synthesizer phase locked to the Thunderbolt GPSDO to inject a reference signal 20Hz above the test signal (I used WWV at 5 MHz for