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Mark,
I compiled and ran Lady Heather on my Tinker this morning. This is using the
"stretch" distribution with GCC version 6.3.0 (and of course, the current
version is 7.1.0 with more language changes). I received 8 warning messages,
the first three are a language change and remainder are "mislead
me-nuts
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bin/mailman/listinfo/time-nuts
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I have finally ordered a GPSDO (probably get here in April). In the meantime,
I have the GPS antenna (Luctel, 26Db). I picked up a 20' solid section of 1 1/4"
copper pipe at the plumbing store with the intention of mounting it to my
chimney.
My question is about the stability of that mounting. I e
le. For
> the changes to take effect you will need to re-start Heather (or do a "r
> heather.cfg" keyboard command).
> _______
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to
>> start a multi-million business.
>>
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of you :)
> In case you have any questions, feel free to ask.
> Kind regards,
> Wolfgang Wallner
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gt; ___
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>> __
as the 6T? I did shut all sats
> off except GPS sats.
> Bob - AE6RV
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&
Thanks everybody! You have all given me a bit to think about. Clearly, what I
thought that I needed is not necessarily what I actually need. To summarize...
1. There are various options and approaches for a Spectrum Analyzer. BUT, I
probably don't actually need one because they are inadeq
Charles,
>>When using a spectrum analyzer to examine the output of a frequency
>>standard, what are the minimum specification needed? Bandwidth,
>>resolution, sensitivity, etc?
> It very much depends on what you hope to see with it. That said,
> virtually no SA will do anything useful in this
Hi,
I have another question about test equipment. When using a spectrum analyzer
to examine the output of a frequency standard, what are the minimum
specification needed? Bandwidth, resolution, sensitivity, etc?
Looking at spectrum analyzers on eBay, I see quite a bit of difference between
variou
Bert, Bob, Charles, Corby, Eric, Luciano, Mark, Rob, . . .
Thanks for the excellent advice. It has been very helpful. Let me see if I can
summarize what different people are saying.
1. The absolute best rubidium standard is the HP 5065A. It has excellent
short term stability. The only di
ag is set to 3 instead of 1
>> and
>> which can be reset)
> Would you elaborate on this? I Googled for TSD12 and except for the
> auction listings, found nothing.
> Joe Gray
> WW5JG
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Timenutmailto:time...@metachaos.net
_
> Hi
> Anything electrical (duty cycle/ harmonics / output level / etc)
> is designed in on a modern part done in high volume.
> The only candidates for a pot on top of the oven are:
> Inner oven temperature
> Outer oven temperature
> EFC
> You have already ruled out EFC (it would be a coarse
ts mailing list -- time-nuts@febo.com
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; Symmetricom SA.22c
>> Symmetricom X72
>>
>> Mike
>>
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Hi,
In looking at eBay, I current see quite a few different types of rubidium
frequency standards. I have seen some of these mentioned here, but no real
comparisions. The question, is what are the pros and cons of these specific
models? Which ones are best or most reliable? Which ones cannot be di
see how he handles
>>> it.
>>
>>
>>> Mike
>>
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will see how he handles
> it.
> Mike
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Bob,
I still have a problem with the various theories. Again, how is it measured?
If you have a production line, you don't want a "tweak" that requires hours or
days to determine.
As far as setting the crystal set point (presumably the inner over set point),
that makes even less sense. Consider t
I have just about finished trashing this OCXO. I was able to run it outside of
its case, and I have repaired the case, but I was unable to reinstall it into
the case because I have to patch it on both the top and bottom. I could,
perhaps, put it into a larger case and might do that later. For now,
u have some suggestions?
>>>>>>
>>>>>>
>>>>>> Mike
>>>>>>
>>>>>>
>>>>>>> Hi
>>>>>>> Best guess is these things get taken off the board with either a big
>>>>> torch or a charcoal fire.
>>>>>>>
;>>> 1. It never heats up.
>>>>>>> 2. The reference voltage is zero.
>>>>>>> 3. Only noise is seen on the output pin.
>>>>>>
>>>>>> I had the same issue with some of the
go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
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com
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I just received a 5Mhz OCXO from eBay (MTI 260-0624-D OCXO). After testing it,
it is clear that it is defective.
1. It never heats up.
2. The reference voltage is zero.
3. Only noise is seen on the output pin.
I tested with a 12.54V, 2A supply voltage with around 30mV noise. That shoul
Bob, et. al.,
Thanks for the advice and information. That has helped a lot in closing some
holes and gives me a lot to consider. I am continuing to research and learn,
this is not a short term project as in building it this week or month. I need
to learn and work up to the full project. I will pro
g carrier phase for timing is
>> potentially
>> >> more accurate by a couple orders of magnitude. Are there any GPS timing
>> >> receivers available that use carrier phase? Or use both L1 and L2 for
>> >> increased accuracy? I see that the ubol
to translate to increased
>> accuracy.
>> And the LEA M8T use dual channels, but don't appear to mix GPS and
>> GLASNOS to
>> improve accuracy. Do any receivers do that? I suspect that building a GPS
>> receiver is probably more complex than can be e
Ha!
I finally answered one of my questions that has been bugging me!
I was taking dBm as the definition of voltage - which it is, but only
round-about. The hidden variable is the assumed impedance of 50 ohms where 1mW
is the zero point for power. That is also why I wasn't getting consistent
answe
Hi,
I am a newbie to this list. I have downloaded the archives and read about
5,000 of the past messages. I plan on building my own GPSDO, probably using a
LEA-6T (but LEA-7T or LEA-M8T would be good if I can find one affordably). I
have a MTI 260 on order (although it could wind up being a 261 si
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