Re: F303 and 4" LCD for next generation NanoVNA
#circuit
#flash_size
#improvement
#enclosure
#battery
hugen, The larger display size is great and if the > 50 dB dynamic range to 1500 MHz holds up in the final release then I'd say you have a winner. Does the larger flash_size allow you to increase the
By
hwalker
·
#8168
·
|
Re: ordering a bigger screen from aliexpress
On Thu, Dec 12, 2019 at 10:28 PM, <nanovnauser@...> wrote: my post code is ln95je,i put that and it says wrong format every time,tried it in caps too,same result,what should i put then?
By
hwalker
·
#8167
·
|
Re: F303 and 4" LCD for next generation NanoVNA
#circuit
#flash_size
#improvement
#enclosure
#battery
I've made a new PCB for testing, it's working well now, but At the moment ADC1 can't read VBAT data correctly, and I can't get into DFU mode through the menu yet, I haven't found the cause of the
By
Hugen
·
#8166
·
|
Re: ordering a bigger screen from aliexpress
my post code is ln95je,i put that and it says wrong format every time,tried it in caps too,same result,what should i put then?
By
Paul M3VUV
·
#8165
·
|
Re: QUESTION
http://deepelec.com/ I have purchased it from them without any hassle, and with complete tracking online.
By
Venkataramanan Sankararaja
·
#8164
·
|
Re: Increasing measurement range (ohms) ?
On Sat, Nov 16, 2019 at 12:59 PM, Oristo wrote> Oristo, I picked up a bridge from the eBay link above. The build quality is poor and the 2, 100 ohm resistor pairs are each not in parallel. So even
By
Larry Rothman
·
#8163
·
|
Re: File updated in [email protected]
Hi Herb, I think Erik or QRP (and maybe Rune) will have to answer that more accurately than me, as what I wrote was my interpretation of their explanation in a forum post waaaay back in October some
By
Larry Rothman
·
#8162
·
|
Re: File updated in [email protected]
On Wed, Dec 11, 2019 at 12:46 PM, "[email protected] Notification" <[email protected]> wrote: * /NanoVNA_Console_Commands_Dec 9-19.pdf (
By
hwalker
·
#8161
·
|
Re: ordering a bigger screen from aliexpress
On Thu, Dec 12, 2019 at 12:55 PM, <nanovnauser@...> wrote: ,,, i enter my post code,it just says its in the wrong format,ive tried every which way with no luck,im tearing my hair out,anyone any
By
hwalker
·
#8160
·
|
Re: QUESTION
Hi David, the NanoVNA-F is designed by a Chinese ham, so what you want to avoid is a clone - not a Chinese one ;-) The original NanoVNA-F is available at http://deepelec.com/ - and only there, as I
By
Rune Broberg
·
#8159
·
|
Re: ordering a bigger screen from aliexpress
My FCU refuses to honor charges on my card to Aliexpress. I no longer tempt ordering from them. Three times. Same results. Likely due to Chinese vender? Dave - W?LEV -- *Dave - W?LEV* *Just Let
By
W0LEV
·
#8158
·
|
QUESTION
After using the original with the 2.8" screen, I'm looking to order the 4.3" unit. As best I can gather, there are three units available all with different external presentations. These are: 1)
By
W0LEV
·
#8157
·
|
ordering a bigger screen from aliexpress
ive found a screen the same as hermans 3.2 inch on aliexpress(thanks for the link herman),however it goes ok trying to buy it untill i enter my post code,it just says its in the wrong format,ive tried
By
Paul M3VUV
·
#8156
·
|
Re: running nanoVNA-saver under Linux Mint XFCE
Hi, Like others, I am having problems with Python PyQt5 etc. I am trying to get NanoVNA to run with a Raspberry Pi 4 with very little success. Works perfect on the Mac Pro. Do you or others know of a
By
g8ore@...
·
#8155
·
|
Re: errors of "error" models
Garry, Thanks, I may have formulated unclear but what you state is what I meant. Uncertainties in M act as "error bars" making it uncertain where you are in the graph, Uncertainties in the calibration
By
Erik Kaashoek
·
#8154
·
|
Re: errors of "error" models
Erik; My bad...I incorrectly stated that zero reactance is established at all three calibration points. Everything goes to infinity at the right edge of the chart. :-) -- 73 Gary, N3GO
By
Gary O'Neil
·
#8153
·
|
Re: errors of "error" models
Hello again Erik; I think you may be confusing the uncertainty in M with the uncertainty in the calibration standard. For example; if the calibration standard is 45 ohms (a substantial 10 percent
By
Gary O'Neil
·
#8152
·
|
Re: 30MHz and below
As QRP RX already wrote, you need to repeat the calibration with the new reduced span to have 101 calibration points in there.
By
styroflyer
·
#8151
·
|
Re: errors of "error" models
Forgive me to add something trying to create a simple mental picture of what you are saying. As the nanoVNA has a almost perfect bridge below 300MHz (apart from a phase shift due to transmission line
By
Erik Kaashoek
·
#8150
·
|
Re: errors of "error" models
GIN&PEZ; I have only advanced in my understanding to the extent that I have been able to confirm that the results of complex load measurements using the G-mini equations map virtually 1:1 to those
By
Gary O'Neil
·
#8149
·
|