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Re: To the RF gurus out there: bandpass filtering S11 harmonic?
FCC Restricted Bands (Part 15.205) is likely to be relevant, where the requirement is equivalent to -41.2dBm/MHz eirp (assuming a 0dBi antenna), -41.2dBm/100kHz 960MHz-1GHz, and -49dBm/100kHz at lower
By Andy G4KNO · #24969 ·
Re: NanoVNA-F audio
Alternative suggestion give them ear plugs. Ha ha De K8HTB Joe
By K8HTB · #24968 ·
Re: Calibration result
It could be an artifact of how scikit-rf works or how NanoVNA-Saver is coded. For example, the uncalibrated nanovna returns gamma for ch0 as reflected measurement/source measurement It's easy to
By Jim Lux · #24967 ·
Re: To the RF gurus out there: bandpass filtering S11 harmonic?
Hello Kent, Mark introduced himself as an 'RF newbie' and I was, somewhat clumsily, trying to point out that transmitting RF is not an unregulated activity. I understand that very low power CW
By Norman_G8EYM · #24966 ·
Re: To the RF gurus out there: bandpass filtering S11 harmonic?
Amateur radio transmissions require id, as do broadcasts (both are for the purposes of "communication") but other transmissions generally do not (radars don't ID).? As it happens radars aren't legal
By Jim Lux · #24965 ·
Re: Calibration result
DisLord, First, THANKS for all your efforts!! You guys do an amazing job, I want to make sure my comments are not taken as I think people are not working hard¡­.. ;-). I¡¯m only trying to offer my
By Chris K2STP · #24964 ·
Re: To the RF gurus out there: bandpass filtering S11 harmonic?
Hi Norman On this side of the pond the FCC does recognize the need to radiate signals during testing. I have an antenna range and commonly transmit on many commercial frequencies.? I am expected to
By KENT BRITAIN · #24963 ·
Re: Calibration result
What I don't understand: If 'weird' measurements can be handled/calibrated with code in the NanoVNA (which is a smallish device), why would it not be possible to have proper calibration, without
By Victor Reijs · #24962 ·
Re: To the RF gurus out there: bandpass filtering S11 harmonic?
Good afternoon Mark, In most parts of the world, transmitting a radio frequency signal is a carefully regulated and licensed activity, whether for experimentation or any other purpose. Holders of
By Norman_G8EYM · #24961 ·
Re: To the RF gurus out there: bandpass filtering S11 harmonic?
On 10/6/21 7:11 AM, Jim Lux wrote: > On 10/6/21 3:36 AM, msat via groups.io wrote: >> Hello everyone! >> >> RF newbie and first time poster here. Recently purchased a NanoVNA-H for a specific
By Jim Lux · #24960 ·
Re: To the RF gurus out there: bandpass filtering S11 harmonic?
On 10/6/21 3:36 AM, msat via groups.io wrote: > Hello everyone! > > RF newbie and first time poster here. Recently purchased a NanoVNA-H for a specific experiment I'd like to perform. Without going
By Jim Lux · #24959 ·
To the RF gurus out there: bandpass filtering S11 harmonic?
Hello everyone! RF newbie and first time poster here. Recently purchased a NanoVNA-H for a specific experiment I'd like to perform. Without going into the unnecessary details of the experiment itself,
By msat · #24958 ·
Re: Case for the Nano VNA
Your radios/equipment might look good if cleaned ;)
By OneOfEleven · #24957 ·
Re: NanoVNA-F audio
Since the transducer/speaker is small with an even smaller opening, you can open the case and place a piece of masking tape over the opening. That will greatly reduce the level.? On Tue., 5 Oct. 2021
By Larry Rothman · #24956 ·
Re: Calibration result
Interesting.. maybe it doesn't handle reflection coefficients with mag > 1 or something. That could easily happen if it's uncalibrated, since it's just returning reflection/source, and the gains of
By Jim Lux · #24955 ·
Re: Calibration result
As I mentioned earlier the calibration routines in NanoVNA Saver depend on having calibrated input over a wide range from the NanoVNA according to Rune. This may be because the algorithm used in Saver
By Roger Need · #24954 ·
NanoVNA-F audio
G'day all, I have the F version 1.0.3 up and running. Is there any way to disable the audio when the VNA is turned on and each time a calibration button selection (e.g., Open, Short, Load)? I hope so
By James Laughter · #24953 ·
Re: Calibration result
So that really does push one to say "NanoVNA-Saver" should send a "cal off" command before sweeping, if you're doing cal within NanoVNA-Saver.
By Jim Lux · #24952 ·
Re: Case for the Nano VNA
I create this case for my 4 inch nanoVNA v2: https://www.thingiverse.com/thing:4727705 it contain stick holder, and box for calibration kit, not big.
By DiSlord · #24951 ·
Re: Calibration result
Thanks DiSlord for explanation, I understand. Op di 5 okt. 2021 om 20:13 schreef DiSlord <dislordlive@...>:
By Victor Reijs · #24950 ·