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Re: SWR & Calibration..
Joe, The best way to learn about your NanoVNA is to "learn by doing". Calibrate your unit for 3 to 30 MHz. and make a measurement of a narrow band like 40M by zooming in. Then calibrate for just the
By Roger Need · #24826 ·
Re: SWR & Calibration..
Thanks, I was thinking of something like that. Joe WB9SBD
By Joe WB9SBD · #24825 ·
Re: SWR & Calibration..
Always calibrated however, unit does interpolation. Therefore, if you desire best accuracy over a given range, then cal over THAT range.
By alan victor · #24824 ·
SWR & Calibration..
Ok, say I set up Stimulus for 3 to 30 Mhz. And then do a calibrate Open Short load. Now it is supposedly calibrated for anywhere between 3 and 30 Mhz correct? Now I look at the who range and decide to
By Joe WB9SBD · #24823 ·
Re: Stripping Coax
OK, that's adjustable for different jacket/braid/dielectric/center diameters, do you have to swap the cartridge for different strip lengths? 73, Willie N1JBJ
By William Smith <w_smith@...> · #24822 ·
Re: Stripping Coax
Paladin CST Pro https://www.techtoolsupply.com/TempoCST-Pro-Stripper-with-Blue-Blade-p/gre-pa1283.htm looks like it
By Jim Lux · #24821 ·
Re: Stripping Coax
3 blades cut jacket, shield,dielectric. I enjoy mine.
By Charlie N2MHS <ucfargis1@...> · #24820 ·
Re: Stripping Coax
Hey Jim, Do you have a pointer to the fancy adjustable one? I've been having a hard time finding anything other than 2 and 3 blade non-adjustable ones 73, Willie N1JBJ
By William Smith <w_smith@...> · #24819 ·
Re: What has happened? #nanovna-v2
Yes, I can calibrate the device, but when doing measurements, I get a lot of lines in a mess. If you have a look at the photo - measurement - you can se a curve form, but rather thick. The form of the
By Karl Jan Skontorp · #24818 ·
Re: What has happened? #nanovna-v2
I have tried 3 different calibration sets, they all get the same result. Measuring at DC is ok. My NanoVNA is a SAA-2N, this is a device with N-connectors, so I don't think they have don their job...
By Karl Jan Skontorp · #24817 ·
Re: Stripping Coax
It would depend on what coax you are working with. Lately I've been using RG316, quite by accident I discovered that I can neatly remove the outer jacket with my Ideal strippers by using the 14AWG
By John · #24816 ·
Re: Stripping Coax
It depends what you mean by pro. While I was working for a cable provider the service men used cheap tools like these: https://s.click.aliexpress.com/e/_AmaRuK https://s.click.aliexpress.com/e/_9QEcIK
By Dragan Milivojevic · #24815 ·
Re: Stripping Coax
That's why I eventually got the fancy adjustable one.? I had a single
By Jim Lux · #24814 ·
Re: Stripping Coax
For instance, this is still a work in progress, but, for RG-8x: BNC Connectors from HRO: Lands Precision BNC-10Z-DGN https://www.hamradio.com/detail.cfm?pid=H0-009969 N-type for RG-8x:
By William Smith <w_smith@...> · #24813 ·
Re: Stripping Coax
I tried to find some catalog info, but you need to dig through distributors pages.. There's different flavors of these things. 2 and 3 level stripping, adjustable or not, whether are not you handle
By Jim Lux · #24812 ·
Re: What has happened? #nanovna-v2
Check your cal loads with an ohm meter to see if they are OK at DC. Take a look at the inside socket of the SMA connectors. Perhaps "drilled out" by rotating pin after too may uses. Roger
By Roger Need · #24811 ·
Re: PC Boards for QEX Step Attenuator Available
Dick, Does the article indicate how much "blow-by" you get (due to the mechanical switches in this design) as the frequency increases? Roger
By Roger Need · #24810 ·
Re: Stripping Coax
One of those multiblade spin around the coax I've used a Paladin CST for decades.
By Jim Lux · #24809 ·
Stripping Coax
I have a ratchet crimp connector and can install various types of terminations. But what tool(s) do the pros use to strip coax? Any suggestions?
By Albert Pion · #24808 ·
PC Boards for QEX Step Attenuator Available
I have ordered a limited batch of boards from JLCPCB for the QEX September/October 2021 ¡°Miniature SMA Step Attenuator¡± pp 9-21 by Tom Alldred VA7TA. If you are interested in a board, at $3.00 ppd
By dick faust · #24807 ·