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Re: Cancelling out coax feeder length?
As luck would have it, Times Microwave website has a coax calculator that includes the delay! My feeder is 26cm of RG316, which comes out as 1.3nS. Was also pleased to find the nanovna allows delay to
By Martin Barfield G7MRV · #9256 ·
Re: Cancelling out coax feeder length?
How long is your feeder and what kind of, I assume, coax? It's really quite easy. Give me those parameters, and I'll show you. Dave - W?LEV wrote: -- *Dave - W?LEV* *Just Let Darwin Work* *Just
By W0LEV · #9255 ·
Re: Part Number for the Demokit Cable
ebay.com, eBay item number: 352840116109, $2.29 free shipping Please see my documentation at: /g/nanovna-users/wiki/RF-Demo-Kit-use 73, Rudi DL5FA
By Rudi · #9254 ·
Re: Cancelling out coax feeder length?
That makes sense, thanks, however the problem I have is that I cannot do it this way, due to the antenna being fixed and not being able to access the feeder connection, so it will need the maths! So,
By Martin Barfield G7MRV · #9253 ·
Re: Nanovna Saver Q issue
On Tue, Jan 7, 2020 at 09:40 AM, vincent coppola wrote: " ..The problem appears to be in determining the correct 3db points. Please note the band stop filter is the only filter that I have tried to
By hwalker · #9252 ·
Part Number for the Demokit Cable
Anyone have a part number on the Demokit Cable, I want to have more than just two cables for the kit? Thanks, 73 de ke4pwe
By Phil Royce · #9251 ·
Re: What Series/Parallel RLC are used for?
Again, read the tutorials associated with the NANOVNA sites. Series and parallel RLC circuits represent resonant circuits. The R represents the lumped loss in these circuit configurations. They may be
By W0LEV · #9250 ·
What Series/Parallel RLC are used for?
Hi, For the NanoVNA Mod 3 software, what is the use of Series and Parallel RLC measurement? I guess in case of S11 measurement it would give me the series and parallel impedance of the passive part
By aa_talaat@... · #9249 ·
Nanovna Saver Q issue
Ver 0.2.1. A very nice, usefull piece of software. The only problem I can see is when measuring Q in the band stop filter analysis mode, the value is incorrect and too low. The problem appears to be
By vincent coppola <n1vc@...> · #9248 ·
Re: SMITH CHART TUTORIAL
I believe this is the referenced book (attached photo and syllabus for the class below) - pulled from the parent directory of the handout directory. Randy NC8U
By Pomology · #9247 ·
Re: Battery standby life
Lithium chemistry battery charges have a setting called "Storage Charge". Why? Because storing batteries with a full charge contributes to the swelling that you see. All my RC plane batteries are
By BruceN · #9246 ·
Re: RF Demo Kit Testing tutorial released
The RF Demo Kit NWDZ Rev-01-10 is available via Ebay for about 15 EUR. A documentation can be found at: http://deepelec.com/rf-demo-kit . I will just extend it a bit about details and *practical*
By Rudi · #9245 ·
Re: Bad Coax...feedback requested
What does the VSWR trace look like? *Clyde K. Spencer*
By Clyde Spencer · #9244 ·
Re: SMITH CHART TUTORIAL
Add the Firefox Downloadthemall add-on to your FF browser. Takes < 1 minute to get all the files.
By W1RS · #9243 ·
Re: errors of "error" models
Hi Gary, I just wanted to make that I answered your question as to why a Short and an Open are not plotted at -1 and +1 after calibration. (The short answer is: because their actual Gammas do not
By Jeff Anderson · #9242 ·
Re: F303 and 4" LCD for next generation NanoVNA #circuit #flash_size #improvement #enclosure #battery
I have had bad experiences with N connectors, even of the "precision" type on high-quality equipment (interconnections between mainframe and S-parameter test set on HP VNAs, for example). Getting a
By Dana Whitlow · #9241 ·
Re: First PCB pictures of the V2
Because of popular demand we replaced the jog switch with buttons (see attached). Yes these are through-hole so should be able to take some force. (Also note the SMA connector on the actual product
By OwO · #9239 ·
Re: Selector switch damaged
Hi all,talking of the jog switch,im thinking of fitting buttons to mine,just wondered is the common pin the center leg,looking from the rear ond the top left pin the enter connection?,thanks in
By Paul M3VUV · #9238 ·
Re: Battery standby life
On my nanovna clone the battery was slightly bulged from the factory. It's mad that the known wouxun fault from 2010 still persists (they put the battery voltage measurement voltage divider BEFORE the
By Ismo V??n?nen OH2FTG · #9237 ·
Re: errors of "error" models
Jeff, Erik, and John; Thank you all for your patience with me on this. I at least feel comfortable with what I think I understand so far. Once again I failed to express myself correctly and used the
By Gary O'Neil · #9236 ·