Yo Hans! On Fri, 5 Dec 2025 21:01:36 +0100 Hans Mayer <[email protected]> wrote:
> On 05.12.25 01:56, Gary E. Miller wrote: > > I have pointed out before that version 1.13 is way out of date. > > 1.51 is current. > > Yes, I know. But my issue is, that this update seems to be possible > only with u-center which is available only for MS. My ZED-F9P is on a > hat on top of a RaspberryPi running Debian Linux. Understood. > Some hints saying > use "wine". But wine is not running on ARM native. Needs an > emulation. I will test but probably u-center will not run over 2 > emulation layers. I am wondering that U-blox does not support at > least an update tool running on Linux. AFAIK, real Windows is your only real hope. It is not much trouble to hook a HAT up to a windows host for update. I use doodads lik this: https://www.amazon.com/WWZMDiB-FT232RL-Converter-Adapter-Breakout/dp/B0BJKCSZZW/ref=sr_1_4 Bridges the TX and RX to windows compaitible USB serial. And provides 3.3V and 5V to power the HAT. My next email will be to file an issue with u-blox. They have actually responded to some requests recently. Maybe they'll continue to be helpful. > > You needed many lines to duplicate one line of example code! KISS. > > > > I'm reluctant to admit it, but your example code is smarter :-) Simpler, not smarter. "Perfection is attained, not when no more can be added, but when no more can be removed." Antoine de Saint-Exupery > > I realised that it depends also on the fact which GNSS are enabled > > or disabled. > > Really? MON-SPAN is raw data. What did you change that affected > > things? > > Using a spectrum analyser it will send out a frequency spectrum and > will analyse the reflected power from the antenna. This is typically > shown as smith diagram where one can see how good or bad an antenna > is at a given frequency range. Unfortunately my spectrum analyser > does not cover this frequency range, otherwise I would test it > already. Yes, MON-SPAN is half-assed. But the only partial ass nearby. I see some neat spectrum analyzers on ebay for only $140k. At least one down near $500. I'll pass. > But in this case the GNSS receiver ( it's not a transceiver ) can > only receive and analyse signals coming from some satellites if they > are there. Not really. Remember that GPS came from the spooky side of government? The received power of a GNSS signal is actually below the thermal noise floor! All this Gold Code nonsense is needed to dig the "hidden" signal out from that. So the universal background noise is a dandy white noise generator for your GNSS antenna tester! > Below there are 2 examples from the L1 band: > > rfspectrum_x002 shows the spectrum with all GNSS enabled which can > handle ZED-F9P, which is GPS, SBAS, Galileo, Beidou, QZSS and Glonass I'm unclear why yours look cleaner than mine... > rfspectrum_x001 has everthing disabled except GPS. Unfortunately at > least one GNSS must be enabled. Interesting, so it does look like the constellations selected are affecting the GNSS input bandwidth. I better add that to the example text. RGDS GARY --------------------------------------------------------------------------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 [email protected] Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can't measure it, you can't improve it." - Lord Kelvin
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