Re: Trouble buying from China
Mike - That's been going on for 12+ months - I buy from China regularly and have been on several occasions. Generally there's no problems with the stuff leaving the factory but the distribution
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stevepilotltd
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#13636
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Re: Trouble buying from China
In the other direction, there are countries that the USPS isn't even accepting shipments to right now, either because their post offices have shut down or because no transportation is available. Info
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Shirley Dulcey KE1L
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#13635
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Re: Trouble buying from China
No need to speculate based on anecdotal cases: https://www.agility.com/insights/COVID19/air-freight/ There's massive disruption generally, some of us are lucky and some are not. 73s, Hajo PGP key:
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Hajo Schatz
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#13634
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Re: nanovna cases
#enclosure
Her are some pictures.
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M Craig Leftwich
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#13633
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Re: Captured in the wild
#bying
#internals
#buying
Checked your picture, black and white are not made by us, but it seems that your black version uses the same circuit as ours, we only found a little difference on the PCB, as long as the test is
By
Hugen
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#13632
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Re: Calibration standards - BNC
All, I'd like an inexpensive calibration set (open, short, 50 ohm load) for BNC (M&F) Any one seen such?? Larry, K4MLA
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k4mla
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#13631
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
Calibrating to the end of a cable was SOP in the lab I ran and every time some one would tell me it introduces error I'd give them what ever time they needed to prove it. They all failed in their
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aparent1/kb1gmx <kb1gmx@...>
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#13630
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
On Tue, 19 May 2020 at 22:36, pez@arg <petrosez7@...> wrote: > | On Tue, May 19, 2020 at 09:48 PM, <sj@...> wrote: > = > | > | I would say NO. > | Sorry to say, but have worked with VNA's for
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Dr. David Kirkby, Kirkby Microwave Ltd
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#13629
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
Thank you. I see it now. My old eyes need some magnification hi... hi Tony VE3DWI. [email protected]> wrote:
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Tony. VE3DWI
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#13628
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
They are all taken in the same format! All 4 graphs have both measurements on them. The results are so close that one is directly overlaid on the other and you can't tell one from the other except at
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Roger Need
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#13627
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Re: Calibration standards - pl-259?
I got a set from Amazon for like $15 US. 2 so239 and 2 pl259
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rennwyll@...
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#13626
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
Why are the two measurements not taken in the same display format? One graph is in SWR one is in RL. Tony VE3DWI. [email protected]> wrote:
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Tony. VE3DWI
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#13625
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Re: Captured in the wild
#bying
#internals
#buying
Thanks Roger!
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Jason Schlager
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#13624
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Re: Captured in the wild
#bying
#internals
#buying
Here is a photo of a Hugen 3.4. looks the same as Jason's
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Roger Need
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#13623
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Re: Captured in the wild
#bying
#internals
#buying
Close up of the other one
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Jason Schlager
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#13622
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Re: Captured in the wild
#bying
#internals
#buying
Close up of white one.
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Jason Schlager
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#13621
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Re: Captured in the wild
#bying
#internals
#buying
Jason, It could be a genuine Hugen 3.4. Hugen posted that he does sell them with "sandwich" type construction instead of in a plastic case with the gift box. Roger
By
Roger Need
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#13620
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Captured in the wild
#bying
#internals
#buying
Captured in the wild. I am aware the white one is an inferior clone but the black one appears to have a newer pcb and has a version 3.4 screened on the pcb. Is this a genuine one? It has a different
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Jason Schlager
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#13619
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
| On Tue, May 19, 2020 at 09:48 PM, <sj@...> wrote: = | | I would say NO. | Sorry to say, but have worked with VNA's for 30 years and as soon as you come | near 1/8 wavelength the measurement
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pez@arg
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#13618
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Re: Calibrating to a long coax?
#applications
#calibration
#measurement
Here is a file containing the R+jX comparison from the experiment above. Sweep at feedpoint and at end of 55 feet of RG58 overlay on top of each other. Roger
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Roger Need
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#13617
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