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Re: Sun Shield?
How about using a piece of privacy glass/plastic - the type that allows you to see the display straight-on? I think it would block out light from the side.? Of course, it would be useless if the sun
By Larry Rothman · #21110 ·
Re: 450-OHM WINDOW LINE........OR IS IT?
Thank you so much. Some really good measurements. Excellent site. Dave - W?LEV [email protected]> wrote: -- *Dave - W?LEV* *Just Let Darwin Work*
By W0LEV · #21109 ·
Re: Sun Shield?
That¡¯s a good idea. If one could find one of those Tektronix ¡®scope hoods that had the right dimensions so that the nanoVNA could be ¡°tucked¡± into the hood such that it would fit tightly
By Dave Daniel · #21108 ·
Re: Sun Shield?
I am thinking that, short of using a 3D printer to create a hood, a small box maybe twice the length and breadth of the nanoVNA that opens by the top lifting off, hinged at the back and with flaps
By Dave Daniel · #21107 ·
Re: Sun Shield?
I¡¯m envisioning the green plastic/rubber hoods we had on the old Tektronix oscilloscopes... the ones that were shaped to fit tightly against your face around your eyes... Nowadays the test equipment
By Dave Fugleberg · #21106 ·
Re: #measurement Problems for reading SWR, Graph always mooves ! #measurement
What a beautiful suprise to see all theses answers ! Thanks to all ! Many Many Thanks to all ! Now i understand, i begin to understand. Why i try to do this : in order to try to get the best antenna
By pjbellin@... · #21105 ·
Re: Sun Shield?
I was thinking something collapsible so it would be very small when not in use, but maybe that could be done by some clever 3D printer wrangler. (I've never played with any 3D printing.) -kb
By Kent Borg · #21104 ·
Re: Sun Shield?
Simples! Blackboard paint !
By Colin Coker · #21103 ·
Re: #measurement Problems for reading SWR, Graph always mooves ! #measurement
Very good advice.?? Another possibility would be to cut a quarter wave wire, attach it to the shell of the antenna's connector, and let it hang down vertically while the antenna is oriented
By Maynard Wright, P. E., W6PAP · #21102 ·
Re: Sun Shield?
Seems to me there is work to be done for those with a 3D printer. Op ma 1 mrt. 2021 15:54 schreef Kent Borg <kentborg-nanovna@...>:
By Karel Gol · #21101 ·
Re: #measurement Problems for reading SWR, Graph always mooves ! #measurement
Small handheld antennas are affected by close proximity to conductive and dielectric sources such as your body or hand. This is also true when you attach th antenna to your handheld radio. The SWR
By Mike N2MS · #21100 ·
Sun Shield?
The NanoVNA is great, among various reasons, because it is so small and light (and inexpensive if damaged) and great for use in the field! Otherwise known as "outside", where there is often bright
By Kent Borg · #21099 ·
Re: 450-OHM WINDOW LINE........OR IS IT?
Hi Dave, I measured wireman #553 at 390 +/- 5 ohms with AA-600. John K5NL has data he has measured in the Simsmith feedline data table for several versions of LL - see his site for lots of info on LL
By joe gay · #21098 ·
Re: #measurement Problems for reading SWR, Graph always mooves ! #measurement
Hello Pierre, Great observations and questions. I am not an expert at this, but I do recall a response to a similar question a few weeks about using the nanoVNA for antenna measurements. I recall
By Ken Sejkora · #21097 ·
Re: #measurement Problems for reading SWR, Graph always mooves ! #measurement
Pierre, I think you are trying to measure the antenna from a handheld transceiver? In such instances, the antenna uses the handheld transceiver as a ground plane to make up the other half of the
By Tom KD8AVF <kd8avf@...> · #21096 ·
#measurement Problems for reading SWR, Graph always mooves ! #measurement
Hi all, First time I post a question because i've an issue with my nanoVNA. Thanks to all for intersesting to it and many thanks for all your post ! I've learn so much things with all of you ! So
By pjbellin@... · #21095 ·
Re: Surgical Tubing for SMA connectors
Very good. You have to buy more from the kitchen storage, so you get our stuff too. 73, Gyula HA3HZ -- *** If you are not part of the solution, then you are the problem. ( http://ha3hz.hu/ ) ***
By Gyula Molnar · #21094 ·
Re: Surgical Tubing for SMA connectors
Here's how I handle the H4 cal kit. I raided our kitchen for a small screw-on lid container. Then I mounted some chassis feedthrough connectors to the lid and connected up the cal kit. I also store
By Jim Nadal K6MU · #21093 ·
Re: Bad Cable
In the past I have cracked or cut open the connector on the bad end and repaired the cable. Yeah, I know, it's a cheap cable. I don't do it because it's cost effective. I do it for the fun and
By Jim Shorney · #21092 ·
Re: Bad Cable
One end may still be good. Thought I might need a pigtail. I do use usb a as a 5vdc power for projects. Nice plug without data. Bad usb hub still working for power.
By jac hil · #21091 ·