Posts by iw5bsf

yes perfect thanks Lucio

Thanks, in any case the SAA2-220830 version also seems compatible. I keep the firmware. I checked the Amazon link and they don't seem to fit. I will try to see if I have metal cases for the SMA is it better to use adapters? SMA F/M I see differences with and without

Thank Lucio

mine was bare, without a case, purchased here official store nano vna v2
https://www.tindie.com/stores/…oup/?utm_source=sidebarIt should be what you indicated, the exact 2.8 screen as indicated on the back of mine, I will download the firmware, let's see how it goes

should I put it in a plastic or metal case? I don't like the two Chinese sma

73 de iw5bsf Roberto

update

I installed v2-20201013-v2_2. firmware
Unlike the SAA2-220830 version, this one seems to work fine
and decide which one to leave

sorry, do you mean in the firmware? inside the VNA (unfortunately I didn't note down the firmware version when I purchased it) after a few months I updated but then I had doubts whether it was the right version

see the last one attached at the bottom

I tried to load version 20200328 but in the smith menu the screen is white with dashes, it seems that this version has problems

I just loaded the firmware you sent me but if I restarted not automatically the white screen remained I had to turn it off and on again and is this normal? I see it works

Hi, I received my nanovna from tindie, it should be the first original v2 series, I always have the invoice taken in June 2020
I downloaded the update from the official site but I was wondering if it was the right version. Thanks, I will try to load the firmware you sent me.

ciao grazie

Roberto

I'll try it then let you know

hello Lucio Unfortunately I can't take a clear photo, it's blurry

menu config >version

Nano vna 2_2

SN: 35554639-000443333-35343234

Software copyright@edy555 et a1

Version: git20201013-32077fd

Build time oct 13 2020 04:35:10

Compiler:gcc

Port info: gd32f303

Board: nano vna v2_2

Has fpu:yes

ok thank

Roberto iw5bsf

Hi I have to calibrate a helical illuminator with my nano vna v2 I think it's one of the first versions I wanted to update the firmware but from the official website I can't understand which one is the right one
downloaded the version nanovna-v2-20201013-v2_2. firmware
and firmware version NanoVNA2-20200328
I don't know which one is right?
73 by iw5bsf Roberto

hello Hi, I'm looking for a PCB for mrf 21045

thank iw5bsf Roberto

Hi George I am testing an rx converter for 2.3 GHz I do not remember how to measure the gain I set this way spectrum analyzer reference -30 dbm I have an input protection attenuator of 20 db if 144 nhz then I send -40 dbm from the generator rf 2.3 GHZ at the input of the converter and I read -30 on the spectrum of the analyzer

Thank Roberto iw5bsf

hello George my test pipe cap 2.3 GHz report 2.2 - 2.5 db

73 Roberto

thanks band italy 2320 ghz ok

Roberto

Quote from iw5bsf

thank George , if I don't correct the height 24 mm? good idea now i have to see if i can find them in the plumbing sho

73 Roberto

I took the copper caps like yours I have to make the center hole, did you measure the loss of 2.3ghz?
thank you

Roberto

ok sorry if i wrote sho instead of shop, thanks i want to experiment try building a pcb and two sma connectors test a 2.3ghz tube cap filter like you did

73 Roberto

thank George , if I don't correct the height 24 mm? good idea now i have to see if i can find them in the plumbing sho

73 Roberto

Hello George

i am building a 2.3 Ghz transverter designed by w1ghz Paul i saw that you did it too for the PIPE CAP you used the dimensions mm?
thank you

73 de iw5bsf Roberto

hello

I found this information interesting
on pic 12f675

https://groups.io/g/UKMicrowav…y,,12f675,20,2,0,27514927

I took a look after reading your directions datasheet 4351 page 22 it says register 3 also serves to determine TIMER AND FAST LOCK REGISTER SEQUENCES TER

Thanks for the answer, I use the pickt3 as a programmer following some indications on the net I put a resistor between VDD and MCLR for programming

the sequences in the asm file up to these:

EEPROM LOCATION

DE 0x00, 0x7D, 0x80, 0x10 ; register R0 2514,000Mhz // ok

DE 0x08, 0x00, 0x80, 0x29 ; register R1

DE 0x00, 0x00, 0x4E, 0x42 ; register R2

DE 0x00, 0x00, 0x04, 0xB3 ; register R3

DE 0x00, 0x85, 0x00, 0x3C ; register R4

DE 0x00, 0x58, 0x00, 0x05 ; register R5

therefore the sequences must be reversed