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I presume this is for HF. A vertical antenna is not a differential source/load and should not be fed with a balanced line - your 600-ohm ladder line. A vertical of 1/4-wavelength long should be

well i was looking at the losses using coax,the ladder line is homebrew as i had a lot of enameled copper wire,thats why the 9-1 unun is by my tx,as then the atu matches it ok,whats the best way to

Bigger question is why a balanced 600 ohm line to an unbalanced vertical which typically is low impedance? Short form is the 19" of wide at most will skew the data as your moving the VNA 18 inches

Hi all,ive a nanovna with bnc conectors,i want to connect it to my homebrew vertical to play with the base loading coil,currently i have 600 ohm ladderline with one leg going to the loading coil and

GIN&PEZ; Indeed an interesting experiment, and one of which my contribution may be quite small and insignificant. :-) I am certain I can (with some effort) locate the reference Hackborn article, but

any plans on selling the boards without the screen?

Looks ok but as I do not use Octave on Linux I suggest you use google to find the documentation for the instrumentation-control package -- NanoVNA Wiki: /g/nanovna-users/wiki/home

Exceptional performance, especially taking the target price point into account. You all did a very good job. I wish my home build 3GHz VNA would be that good -- NanoVNA Wiki:

Rune, Yes something is not quite right. I used the TDR function on the NanoVNA in stand-alone mode and got impedance measurements that made sense to me. I cascaded some 50 ohm (RG58), 75 ohm (RG59)

Herb, Thanks for the info. Nice to know the source of the cable. Hope the connectors are properly installed. Roger

Is Hugen involved with this V2 product or is he doing a separate development? BTW - Hugen's supplier Maggie King emailed me today stating that revision 3.4 of the NanoVNA-H is now available at her

Any reason you could not give it an SPI interface? then you would only need to break out 1 pin for CS which may be easier? IF you even need to you could just make it so we pick "screen OR serial" that

On Wed, Dec 18, 2019 at 09:54 AM, Gabriel Tenma White wrote: …. price: most likely similar to the -H, so around $60. I don't know where the $100 BOM cost rumor comes from but it's false, the BOM

OK, thanks. Many devices use pin 4 of the microUSB connector as a switching line (ex: cellphones use it to switch to OTG when pin 4 is grounded). Maybe you could use that to route serial to the

Great news, Gabriel. Would it be possible to have a serial interface option that you can select via an on-screen config command? That way, end users could opt to use their own add-on serial to BT or

option to rotate screen 180 degrees: should be doable; I think the ILI9341 has a command to do that without flipping the data. bluetooth: not yet, maybe V3 ;) display size: base version will have a

Gabriel, Seeing the uncalibrated phase performance till 3GHz and the S21 isolation level I have to congratulate you with this result. The phase performance is MUCH better then the 3GHz bridge you can

On Wed, Dec 18, 2019 at 06:14 AM, Pierre Martel wrote: got a price range for the unit? ==================================================================== Hugen or Gabriel posted previously that the

Hope the keyboard lived through the experience ;) I'm interested in a case as well. Cheers, Lyle NM6Y "Les Brown" <les.m0lpb@...> wrote: -- 73? ?NM6Y Bickley Consulting West Inc.

Any expensive proffesional instrument needs 30 warmup minutes. It is really ussual. Calibration has to be done after warmup too.