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 t
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
th
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 an
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 als
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 instantane
> 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
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?ViewItem&item=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
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 on
> 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 Ca
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 thi
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)
Hi,
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, i
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 stand
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 t
I just finished several email exchanges with Joe Carcia, station manager for
W1AW, about the operation of the station. I had hoped that the regular daily
bulletins broadcast by W1AW would be tightly controlled in frequency, which
would allow me to get some practice measuring them. He informed me
Are you working on a portable 10-GHz ham rig, or is this part of a a fixed
installation? IMO, GPS clocks are a much better solution for most people
than surplus rubidium standards that may require calibration and lamp
replacement. Unless you actually need portability, you might look for an HP
Z38
Hi Rick --
That's only one small part of a Rubidium frequency standard, and
unfortunately won't do you any good unless you build all the other
pieces around it -- which would be quite a project!
Sorry,
John
[EMAIL PROTECTED] wrote:
> Hi,
>
> I'm a new list member. I'm also very new to
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 s
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