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Re: Nanovna-H4, looking for a case this will fit in.
Hi,
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I keep mine in the nice box it came in. When that starts to wear out I will probably make a case to fit and also hold the accessories. I would probably make it from some kind of wood but I could use steel or aluminum sheet. Have you considered making your own case? 73, Bill? KU8H bark less - wag more On 1/13/22 7:45 AM, Dale - 2W0ODS wrote:
I've bought a few "Hard drive" cases from Amazon, all have stated they have bigger dimensions than the Nanovna-H4 but all have been too small. |
Re: Nanovna-H4, looking for a case this will fit in.
Charlie N2MHS
Here is what I have been using. Holds Nano, many adapters, some SMA cables and the USB cable fro Saver
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On Thursday, January 13, 2022, 07:55:20 AM EST, Larry Rothman <nlroth@...> wrote:
Some forum members have ordered the Gameboy Advance hard case. Search out messages using those terms for more info. ? On Thu., 13 Jan. 2022 at 7:45 a.m., Dale - 2W0ODS<dale.robins@...> wrote:? I've bought a few "Hard drive" cases from Amazon, all have stated they have bigger dimensions than the Nanovna-H4 but all have been too small. Has anyone bought one from Amazon that fits? Pictures of a Nanovna-H4 in a case would be very helpful. Thanks Picture attached of the issue I'm having: |
Re: Nanovna-H4, looking for a case this will fit in.
Ok, those terms don't work, but h4 case does and gets you this:
/g/nanovna-users/topic/87708498#25921 YMMV |
Re: Nanovna-H4, looking for a case this will fit in.
Some forum members have ordered the Gameboy Advance hard case. Search out messages using those terms for more info.
On Thu., 13 Jan. 2022 at 7:45 a.m., Dale - 2W0ODS<dale.robins@...> wrote: I've bought a few "Hard drive" cases from Amazon, all have stated they have bigger dimensions than the Nanovna-H4 but all have been too small. Has anyone bought one from Amazon that fits? Pictures of a Nanovna-H4 in a case would be very helpful. Thanks Picture attached of the issue I'm having: |
Re: semi automatic quartz measuring
You need a step more: enter the approximate frequency of the crystal.
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It is necessary because being the crystal a very high Q device you must sweep it quite slowly and using much points (1 Hz per point, ideally) , if not the resonance frequency and the 3 dB points could lie between 2 sweep points. Another reason is due to the fact that crystals have various resonances and you don't want to know all of them unless you are dealing with overtone crystals. If it is the case you want the intended overtone frequency and not the others.? Sweeping for all resonances will be extremely long. If your crystal have no markings and you don't have any idea of its frequency it is better to manually try to figure out the approximate frequency and use it. I have been there with the Power Ham Scalar Network Analyzer (PHSNA) and I made hundreds of measurements in order to further automate the excellent crystal measurement function of the PHSNA. The program writes to a CSV file the parameters of the lot of crystals that you are characterizing. It measures the resonant frequency,? Q, motional inductance, capacitance and resistance, ideal for selecting crystals for making filters. What I found was that an improved method could use successive approximations using on each one finer sweeps centered in the frequency obtained with the previous one. My attempt tried only to increase the speed and automate even more the operation. Finally I didn't implemented it because I would have to rewrite too much of the existing? program. I think that the function could be added to any of the PC programs that control the NanoVNA, If anybody is interested in such development I offer my assistance but I am not a programmer and I not want to do the coding. Regards, Ignacio EB4APL El 13/01/2022 a las 1:17, MAc B escribi¨®:
Dislord (DisKING? master) improvement made quartz measuring nice or even possible. So one question - is that possible (did somebody wrote a piece of soft) to measuer crystals "semi -automatic" --
El software de antivirus Avast ha analizado este correo electr¨®nico en busca de virus. |
Nanovna-H4, looking for a case this will fit in.
I've bought a few "Hard drive" cases from Amazon, all have stated they have bigger dimensions than the Nanovna-H4 but all have been too small.
Has anyone bought one from Amazon that fits? Pictures of a Nanovna-H4 in a case would be very helpful. Thanks Picture attached of the issue I'm having: |
semi automatic quartz measuring
Dislord (DisKING? master) improvement made quartz measuring nice or even possible. So one question - is that possible (did somebody wrote a piece of soft) to measuer crystals "semi -automatic"
What I mean 1. Put crytstal to holder (vna measures parameters) 2. Press button (or do nothing) - computer receives data and record it into (next) line of csv file 3. write number on crystal 4. Replace crystal, go to 1 After measuring all crystals go to spreadsheet, import csv, sort by frequencies, select, smile... Any directions? MAc mrn |
Re: automatic loading of a nanovna saver cal file?
On Tue, Jan 11, 2022 at 12:38 PM, chutton12000 wrote:
Oops - I need to read more carefully before responding. NanoVNA Saver will not do what you want. You have to save the calibration and manually reload it. Also NanoVNA Saver requires that the NanoVNA itself be calibrated to a range greater than or equal to the range you calibrate in NanoVNA Saver. And it needs to be exactly the same setting on the NanoVNA if you reload the calibration file in Saver later on. I prefer to use NanoVNA app by OneOf Eleven. Much better user interface, better graph scaling options, data smoothing and it retains settings if you close and reopen the app. Roger |
Re: nanoVNA software for Mac?
Hi Cliff,
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Please browse the forum's wiki and user messages for lots of good info on those using Mac's with their Nano On Tue., 11 Jan. 2022 at 11:20 p.m., Cliff<ae5zaham@...> wrote: Is there any software written that runs on a Mac and connects to the nanoVNA? All I seem to find is Windows only. 73, Cliff, AE5ZA On Jan 11, 2022, at 21:50, chutton12000 <charlesh3@...> wrote: |
Re: nanoVNA software for Mac?
Cliff
Thanks to all who responded. It looks like nanoVNA-Saver is the one to try.
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73, Cliff, AE5ZA On Jan 12, 2022, at 07:55, Terry - KD8RGJ <KD8RGJ@...> wrote: |
(Feature request) Smith's grid: circles of equal SWR display?
Hello!
I think it could be useful to have an option to display a circle of a given radius (set as the desired SWR value) to quickly check if the Smith's graphic exceedes that limit. Yes, it is possible to enable a separate SWR trace for that, but I'd like to have it with just one trace on the screen. Please comment. |
Re: nanoVNA software for Mac?
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On Jan 11, 2022, at 8:20 PM, Cliff <ae5zaham@...> wrote: |
nanoVNA software for Mac?
Cliff
Is there any software written that runs on a Mac and connects to the nanoVNA? All I seem to find is Windows only.
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73, Cliff, AE5ZA On Jan 11, 2022, at 21:50, chutton12000 <charlesh3@...> wrote: |
Re: automatic loading of a nanovna saver cal file?
It seems that everyone is missing the SAVER part.
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Anyway there is no such feature in the NanoVNA Saver. On Tue, 11 Jan 2022 at 21:38, chutton12000 <charlesh3@...> wrote:
Roger - |
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