Re: Coax choke/balun
Common mode choke, literally thousands of pages
out there dedicated to the topic. Good start for ham use:
http://www.karinya.net/g3txq/chokes/
By
Dragan Milivojevic
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#19602
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Coax choke/balun
I have seen desktop antenna/coax assemblies (such as for an SDR) that
take the (thin) coax cable and wrap it around a small toroid about 3
or 4 times, close to the antenna. I understand this is to
By
AllassoPraise <allassopraise@...>
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#19601
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Re: Measurement EFHWA
Hey Pete,
Indeed it is a 1:49 after all... I didn't catch that when I posted. My EFHW started out as 3/24 turns (1:8) or a 1:64... but after measuring with the NanoVNA I ended up removing 3 turns. I
By
W5EGA@...
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#19600
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Re: NanoVNA Function-Oriented Cheat Sheet
This video by Alan on the NanoVNA is a great intro. It gets a little technical for the uninitiated but definitely worth the time of watching it several
By
Vince Rooney
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#19599
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Re: Measurement EFHWA
Jim,
Do you want to measure the impedance looking into the end fed wire itself?
A 67 ft long wire from 12 inches above ground straight to a tree at about a 70 degree angle comes in about 3700
By
WB2UAQ
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#19598
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Re: Measurement EFHWA
Hello Jim,
I am not an expert or experienced antenna guru - but I like my end fed half wave for 20 and 40 meters. I "sorta" modeled mine off of "Gil the radio prepper" on YouTube and also Alex's
By
W5EGA@...
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#19597
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Re: Saving Measurement from antenna
That's Hugen the "original" manufacturer and that is only on the H4 version.
By
Dragan Milivojevic
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#19596
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Re: Saving Measurement from antenna
Android NanoVNA app supports (AFAIK) "V1" nano only.
[email protected]> wrote:
By
Dragan Milivojevic
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#19595
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Re: Saving Measurement from antenna
Oops, I also meant to mention that the sellers, like 98% of all sellers, do not mention features (like memory storage, or instruction manuals) that their product do NOT include.
--
Doug, K8RFT
By
DougVL
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#19594
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Re: Saving Measurement from antenna
The NanoVNA is a bit like the 'traditional' V.O.M. - Just gives readings on a meter/display.
There is/are now version(s) with connections on the PC board to add a microSD card for storage, and I
By
DougVL
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#19593
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Re: NanoVNA Function-Oriented Cheat Sheet
I have thought the same thing ever since I got my Nano VNA. It also would not take anyone more than a few minutes because I assume we all have things we have figured out how to do and if we all sent
By
PhilKE3FL
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#19592
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Re: BT connection doesn't work on NanoVNA-saver
"Why version newer than 0.2.0 don't work on BT virtual COM?"
A poetic question to which the answer is: there is no one to carry on Rune¡¯s legacy.
Happy Holidays and all the best!
--
*** If you
By
Gyula Molnar
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#19591
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Re: BT connection doesn't work on NanoVNA-saver
Unfortunatly even if I manually enter the com port, nanoVNA Saver 0.3.8 doesn't connect and issues this error:
2020-12-22 22:56:54,788 - NanoVNASaver.NanoVNASaver - ERROR - Tried to open None and
By
Piero Tognolatti
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#19589
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Re: Touchscreen type?
The touch screen is resistive. You can use a stylus with a hard rounded tip like those used with the old Palm Pilot PDAs.
Some forum members used Q-tips.
By
Larry Rothman
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#19588
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Re: Saving Measurement from antenna
You are not, no such feature.
Calibrate at the end of the feed line, measure in your shack.
[email protected]> wrote:
By
Dragan Milivojevic
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#19587
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Saving Measurement from antenna
I have a new V2_2 SAA-N which I am trying to figure out. The user manuals explain calabration etc well. The unit works well with the NanoVna- Saver software. My question - I go to the feed point of an
By
joe gay
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#19586
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Re: Touchscreen type?
I have VNA-f, and stylus works OK.
Best Regards,
Roger WA0VYU
By
Roger Stierman <rogerstierman@...>
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#19585
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Touchscreen type?
Is the touchscreen capacitive? Will a smartphone stylus work? or does it simply use pressure?
73 de W3WTW
By
Tim Marsh
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#19584
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Re: NanoVNA Function-Oriented Cheat Sheet
Tnx, Don. I always forget about that. Dee, K7UD
By
Dee Hester <deehester@...>
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#19583
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Re: BT connection doesn't work on NanoVNA-saver
This problem exist long time. Try manually enter com port setting to nanovna saver. Rescan not work. Manually defined com port works with virtual com port.
By
pgc1682@...
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#19582
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