Re: KIND REMINDER
No, there isn't. The rule applies to *units* in the SI. Mega, giga, milli, pico, deci etc. are *prefixes*.
Raymond
By
Raymond Domp Frank
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#17995
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Re: KIND REMINDER
the capital M is to properly differentiate between lower case m = milli or
1/1000 and M Mega, one million.
Google Engineering Notation for Frequency and you will find the standards.
73,
By
Hasan Schiers N0AN
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#17994
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Re: KIND REMINDER
Yes, but there is an inconsistency, as I do not recall any scientist named Mega or Giga, so it should be gHz and mHz........
Errrrr....
sTEVE l. (Woops Steve is my name so it should be Steve)
By
Stephen Laurence
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#17993
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Re: KIND REMINDER
By SI convention, all units named after people are to be spelled with an uppercase first letter,
so Hz, not hz (the unit Hz is named after Heinrich Hertz). Also mHz, kHz, MHz, GHz, *not* mhz, khz,
By
Raymond Domp Frank
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#17992
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Re: KIND REMINDER
As in mA as well, thanks for the reminder
and since Hertz is a name, the H should be capitalized. ...and it is kHz
not KHz, as capital K is for Kelvin, not 1000 ...although in resistance
values it
By
Hasan Schiers N0AN
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#17991
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Re: nanovna saver on saa-2N
Martin, I upgraded my SAA-2N FW to ver 20200926, works fine on
instrument, however I have the same issue with NanoVNA-Saver, as well
as some other anomalies (program sweep runs on 1 step but hangs on
By
Ted Chesley
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#17990
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Re: SWR measurement of CB antenna with PL-259
#newbie
What about a balun. If I connect two wires directly to any measuring device without a balun, I don't get any results. Readings don't change no matter what I do.
By
Leif M
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#17989
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Re: SOLT Error Theory
#calibration
Dear Alan,
Thankyou. We are a little way down the message ladder, so this refers to several messages back.
Thankyou for an injection of sanity (to me, anyway). I will continue to play, plod on, and
By
Stephen Laurence
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#17988
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Re: SOLT Error Theory
#calibration
Jeff,
interesting question that you ask. I remember, back when I had to implement TOSM (=SOLT) calibration with arbitrary standards, including a fully-known but non-ideal through standard, I was too
By
Christian Zietz
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#17987
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KIND REMINDER
To avoid confusion, please note (conform) to the following *standard*
notation in emails:
mHz or mhz = *MILLI*hertz = 1E-3 Hz (subsonic)
MHz or Mhz = *MEGA*hertz = 1E+6 Hz
GHz or Ghz = *GIGA*hertz
By
W0LEV
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#17986
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Re: SOLT Error Theory
#calibration
Thanks very much, Christian. That is a great help.
Pivoting slightly...I have a question for the group regarding SOLT errors and calibration, but this has to do with the THRU standard, rather than
By
Jeff Anderson
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#17985
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Re: nanovna saver on saa-2N
I have the same issue.
VNA 2_2 Version: git-20200617-1a9a11d
Build Time: Jun 19 2020
By
Martin V
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#17984
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Re: SWR measurement of CB antenna with PL-259
#newbie
Be careful with large plugs. I already broke. I had to temporarily rewire from another port.
By
Oleg, UI4F
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#17983
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Re: Recomendation
I m
The The nand oand noonioonno noo ? in
73,
KB5WCK
________________________________
Sent: Tuesday, October 6, 2020 3:38:17 PM
To: [email protected] <[email protected]>
Subject:
By
KB5WCK
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#17982
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Re: SOLT Error Theory
#calibration
John's and Jeff's posts make me reconsider my previously posted plot. Unfortunately, it contained an error - or rather something I forgot about my old MATLAB script. For that plot I calculated an
By
Christian Zietz
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#17981
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Re: SWR measurement of CB antenna with PL-259
#newbie
It depends on the frequency.? For low frequencies, lead length is unimportant.? As long as the lead is much shorter than about one tenth of a wavelength, it won't matter much.
Therein lies one of
By
Bob Albert <bob91343@...>
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#17980
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Re: SWR measurement of CB antenna with PL-259
#newbie
Probably a stupid question, but does the length or type of the wire used to connect the SMA to the coax matter? Will it change the measured values?
By
vitovsky.petr@...
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#17979
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Re: SOLT Error Theory
#calibration
Hi Christian,
Thanks very much for your explanations.
I'm trying to understand your graph and how you are calculating the error in dB. So I thought I'd try this simple example:
Let's say I have a
By
Jeff Anderson
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#17978
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Re: SOLT Error Theory
#calibration
Hi Steve. I think the best answer is you be the judge. Get a hold of a component that you know is your so called golden standard. An R, L or C to start and go measure. Does the value behave as you
By
alan victor
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#17977
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Re: SOLT Error Theory
#calibration
Gentlemen,
I have tried to read this string and accept I have little hope of understanding much of it, albeit I have tagged some of the references in the hope that my understanding might improve with
By
Stephen Laurence
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#17976
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