On Fri, 8 Nov 2013 16:55:29 +0100
HagaaarTheHorrible hagaaar587pl...@googlemail.com wrote:
Doesn't sound too good I'm afraid... in addition to the shipping issues, I
wonder if it was the right decision to use this OCXO...
Are there any low phase noise OCXO available (preferably from stock)
Hi Rick
Thanks for the clarification.
I'd thought at first you were suggesting these replacements were somehow at
fault in comparison with the original design, which was the bit I couldn't
understand since they seemed to be virtually identical, rather than
commenting on the original
Hi
One very good reason to lock up the TCXO in the radio rather than use the GPSDO
output is spurs. None of these surplus GPSDO’s are particularly clean spur wise.
Bob
On Nov 9, 2013, at 12:23 AM, Charles Steinmetz csteinm...@yandex.com wrote:
Chris wrote:
I wonder what you gain by this?
Rick,
Can you point us to a method and schematic of a better way to make such a front
end for a counter?
Peter
On 11/9/2013 6:26 AM, gandal...@aol.com wrote:
Hi Rick
Thanks for the clarification.
I'd thought at first you were suggesting these replacements were somehow at
fault in
Hi
I suspect it starts with an input source stability analysis on the actual chip
and layout used. You would need some pretty good models for the counter chip to
do that. That may only be the first layer to the process...
Bob
On Nov 9, 2013, at 8:58 AM, Peter Gottlieb n...@verizon.net wrote:
Corby
I have 2 EGG RBs and would need to look at the model.
They are putting out 10 Mhz as I recall. Would be happy to look if they are
the same units to see whatever clues we could get.
Question I have always had. Do they need to be attached to a heat sink?
It looks like they may want that yet
Hi Chris,
This has to do with my GPSDO project. I hadn't
realized just how critical it was to have an antenna that is free of
multi-path. I've made several posts about my GPS marching around the
neighborhood. I finally put the antenna up in the attic at the peak of
the roof and now the
If you are dealing with positions that are only up to 5,000 feet distance,
you can assume the Earth is flat and simply plot locations using maybe
gnuplot For such a small area the conversion of latitude and longitude
to (x,y) is linear.
Over larger areas you may want to integrate your data with
Hi
Pretty much all Rb’s want to have a heat sink. Often they got used with some
sort of pad rather than heat sink grease. It’s much less messy that way. The
rack mount Rb’s are about the only exception to the heat sink rule.
Bob
On Nov 9, 2013, at 12:19 PM, paul swed paulsw...@gmail.com
I have 2 of these and Bobs thread had me take a look to see if I could help
him.
Unfortunately a different model.
But figured I would ask if anyone had any details on these units. There is
a label on the side that describes the pins and they do indeed work. It
seems in the old days EGG did a lot
Looked at my egg and its a TS-RFS circa 1999
One end does appear that it would have been bolted to something.
But it could as easily be the chassis mount as anything no real clue.
But easy enough to leverage the 5 holes to attach to an aluminium
plate/rack panel.
Sorry its not the same model Bob.
Yes, but as with quartz it varies a lot.
I have tested a few LPROs, but have never seen a frequency jump in them. Those
with more to test might have seen some jumps, but mine have been well behaved
whenever they were being logged anyway.
I don't remember seeing actual jumps in the FE5680A's
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--
Joe Leikhim
Leikhim and Associates
Communications Consultants
Oviedo, Florida
jleik...@leikhim.com
407-982-0446
WWW.LEIKHIM.COM
Hi
One of the often seen statements about jumps is that the time between them
increases as the oscillator ages. Obviously that’s only going to apply to
certain mechanisms. If you OCXO jumps because there is no solder on the
varicap, it may not apply. To the extent it’s true, it’s a much bigger
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