Sorry. Got in late, missed who makes that “nano vna”. Can you tell me that please?
Thanks Rick Wannall KG5ITH From: BVARC <bvarc-boun...@bvarc.org> On Behalf Of John Mechura via BVARC Sent: Monday, November 8, 2021 18:34 To: BRAZOS VALLEY AMATEUR RADIO CLUB <bvarc@bvarc.org> Cc: John Mechura <john.mech...@gmail.com>; Christopher Boone <setxtele...@gmail.com>; of...@mailman.qth.net; ralph phillips <ke5...@sbcglobal.net> Subject: Re: [BVARC] antenna analyzers Greetings, I use my nano vna on a weekly basis for my hf antenna. I have had it for about a year or so. Connected to the antenna wiring right where it goes into my radio, I diddle my antenna tuner as necessary and many times achieve 1.04 : 1 or less reflected, as shown on the graph of the nano vna. I have never calibrated it, by the way. If I had it to do over again I would make sure to get one with a case. Mine seems fragile without it. My observations, John, KI5HOC On Mon, Nov 8, 2021 at 5:44 PM Christopher Boone via BVARC <bvarc@bvarc.org <mailto:bvarc@bvarc.org> > wrote: I bought a Mini VNA for ~150. Works great. They show it as 100k thru 1300MHz but the RF out quits at around 600MHz. I've swept cavities, checked HF and VHF/UHF antennas. Love it. I could use it to align an AM broadcast directional array!! No need to lug a heavy OMB around. Does Smith charts! The multi SWR and wide scan comes in handy. Trying to identify an unknown antenna at the top of a tower with 500ft of Heliax?? This makes it a breeze if all is good. Built in TDR shows if feedline is ok as well Chris WB5ITT On Mon, Nov 8, 2021, 5:38 PM ralph phillips via BVARC <bvarc@bvarc.org <mailto:bvarc@bvarc.org> > wrote: I have seen some very nice antenna analyzers from Comet and RigExpert. They cost anywhere from $200 to $600 depending on the model. I have used some of them and they do a good job. Apparently they are ready to use out of the package…no calibration routine needed. Then there are small units called VNAs that cost $50 to $200. They seem impressive for the small size and do everything the big ones do. It appears some of them require a special calibration kit and need to be checked every time they are turned on. I want an analyzer for building antennas from HF through UHF. A bonus would be a function to check band pass filters (some VNAs seem to include this function). What is your experience and recommendations on the options? Ralph KE5HDF Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for Windows ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org <mailto:BVARC@bvarc.org> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org <mailto:BVARC@bvarc.org> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/
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