Locked
Re: Measure frequencies down to 500khz with tinysa?
We had to do that here at the University of Illinois, too. Back in the
early 70's we were doing some ionospheric propagation studies along with
the University of Houston. We flew two cesium clocks to
By
Zack Widup
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#18295
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Locked
Re: Measure frequencies down to 500khz with tinysa?
Back 'in-the-day' I had to carry (transport) the 'flying clock' from
Northwest to White-House (no not that wh house) to establish the exact
'phase' error for the ROTHR (Relocatable Over The Horizon
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Mike C.
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#18294
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Re: tinySA : most accurate power level
Early tinySA firmware was not very good at avoiding compression with strong input signals
It is easy to check for compression
Switch to manual attenuator mode and increase attenuation above the auto
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Erik Kaashoek
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#18293
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tinySA : most accurate power level
I'm building a 1kW+ HF power amplifier.? I've a 2kW homebrew dummy-load with a 60dB PAD (measured with a nanoVNA it's around 60db flat to 100MHz).
With an IC7300 at 100% FM, 7.2MHz, the tinySA reads
By
@G1RVDG0Z
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#18292
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Locked
Re: Measure frequencies down to 500khz with tinysa?
Which is why I wrote it as "milliHertz". MilliHertz just would not be right. :)
"W0LEV via groups.io" <davearea51a@...> wrote:
--
73
-Jim
NU0C
By
Jim Shorney
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#18291
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Locked
Re: Measure frequencies down to 500khz with tinysa?
Yes. mHz is needed to "compete" in the FMTs. However, we should use
correct abbreviations for the units.
Having once been professionally involved in precision timekeeping in the
early days of GPS,
By
W0LEV
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#18290
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Locked
Re: Measure frequencies down to 500khz with tinysa?
We all like to poke fun about this but if you ever participate in the FMT you actually do need milliHertz precision to get into the "green box".
"W0LEV via groups.io"
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Jim Shorney
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#18289
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Locked
Re: Measure frequencies down to 500khz with tinysa?
200Mc/min would be much neater than 3.3333333333(ad nauseam) Mc/s though:-)
Cheers...Bob VK2ZRE
By
Bob Ecclestone
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#18288
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Locked
Re: Measure frequencies down to 500khz with tinysa?
Dog gone it, you are right.? It could be 200 Mega cycles per minute.? Mea Culpa.
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rich
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#18287
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Re: pc control trace data?
Thanks Herb, That works!
[email protected]> wrote:
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Bryan Krone
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#18286
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Re: pc control trace data?
You can use the "trace {# } value" console command to retrieve the values for each trace.
For example, "trace 2 value" will return 450 values for trace 2 in dBm if the default units are dBm for the
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hwalker
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#18285
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Locked
Re: Measure frequencies down to 500khz with tinysa?
And mmF (micki-micki-imikes) and mF (micki-mikes) and cps (cycles per
second)........
Dave - W?LEV
[email protected]> wrote:
--
*Dave - W?LEV*
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W0LEV
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#18284
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Locked
Re: Measure frequencies down to 500khz with tinysa?
Isn't it 200 Mc/s ?
Mike N2MS
By
Mike N2MS
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#18283
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Locked
Re: Measure frequencies down to 500khz with tinysa?
It is not difficult to build your own. I have built a number of loopstick
antennas using ferrite rods. I chose the Amidon Associates R33-050-750
rods.
https://www.amidoncorp.com/r33-050-750/
I
By
Zack Widup
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#18282
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Locked
Re: Measure frequencies down to 500khz with tinysa?
Dave, are you sure that isn't 200 Mc ?? ;)?? What's this Hertz stuff ?
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rich
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#18281
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pc control trace data?
Is there a way to collect the data from multiple displayed traces? I can
collect the first trace with "data 2". I don't see how to collect the
others.
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Bryan Krone
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#18280
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Locked
Re: Measure frequencies down to 500khz with tinysa?
QUOTE: 200 mhz.
200 milliHertz? That's the realm of earthquakes and subsonics! Possibly
you mean 200 MHz, MegaHertz.
Dave - W?LEV
[email protected]> wrote:
--
*Dave - W?LEV*
By
W0LEV
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#18279
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Locked
Re: Measure frequencies down to 500khz with tinysa?
I have used both the TinySA and the Ultra at 90 kHz. I believe I have also
used both to receive WWVB at 60 kHz.
Zack W9SZ
[email protected]>
By
Zack Widup
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#18278
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Locked
Re: Measure frequencies down to 500khz with tinysa?
Because antennas with showing that frequency was suggested, and no one corrected that person, so I assumed those antennas could be used.
By
Roberth
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#18277
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Locked
Re: Measure frequencies down to 500khz with tinysa?
I bought the moxon v2 915mhz, it's no better than the antenna that is included.
I bought the video aerial systems antenna just for fun, and it's actually way better, but still very little under 200
By
Roberth
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#18275
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