diff --git a/content/blog/2022-04-06-udm-fan.md b/content/blog/2022-04-06-udm-fan.md index cabf2c5..e9e19c0 100644 --- a/content/blog/2022-04-06-udm-fan.md +++ b/content/blog/2022-04-06-udm-fan.md @@ -6,7 +6,7 @@ date: 2022-04-06 tags: random draft: false extra: - uses_katex: true + uses_katex: false excerpt: A project review post covering my work on remote-control for the UDM-Pro cooling system --- diff --git a/content/blog/2022-05-18-commit-sync.md b/content/blog/2022-05-18-commit-sync.md index 4738a9b..b6fb075 100644 --- a/content/blog/2022-05-18-commit-sync.md +++ b/content/blog/2022-05-18-commit-sync.md @@ -6,7 +6,7 @@ date: 2022-05-18 tags: random draft: false extra: - uses_katex: true + uses_katex: false auto_center_images: true excerpt: This post covers how to keep your commit graph alive across multiple GIT instances by syncing your commit history to magic repos. --- diff --git a/content/blog/2022-05-21-nanovna.md b/content/blog/2022-05-21-nanovna.md new file mode 100644 index 0000000..34b4d38 --- /dev/null +++ b/content/blog/2022-05-21-nanovna.md @@ -0,0 +1,50 @@ +--- +layout: page +title: "Field Log: First look at the NanoVNA" +description: "Weekends are prime radio time" +date: 2022-05-21 +tags: radio random nanovna +draft: false +extra: + uses_katex: false + auto_center_images: true + excerpt: I went out in the field and tried out my brand new NanoVNA. +--- + +Today I had a rather anticipated package arrive in the mail.. a NanoVNA! For anyone unfamiliar with the NanoVNA, it is a *small* and cheap [Vector Network Analyzer](https://en.wikipedia.org/wiki/Network_analyzer_(electrical)). + +![The NanoVNA](/images/posts/nanovna/nanovna.jpg) + +Network analyzers are tools used commonly by RF engineers to measure reflection and transmission properties of feed-lines and antennas (and a whole ton of other stuff I don't entirely care about for now). + +When I am out operating a radio somewhere away from the comfort of my bedroom, I tend to do a *lot* of guesswork to get my antenna designs right, since I simply work with random wire, yet still need to get something with a reasonable [SWR](https://en.wikipedia.org/wiki/Standing_wave_ratio) up in the air. + +My logic behind picking up a VNA was to have a little tool to fit in my radio bag, easily allowing me to sanity check my antennas before use. + +## My outdoor adventure + +I am fairly well surrounded by dense trees, and a little patch of these woods are just across the street from me. This makes for a perfect spot to toss some wire up and operate away from the RF noise of the city (and people who want to ask me what I'm doing). + +![A photo from across the street](/images/posts/nanovna/area.jpg) + +I headed over there this afternoon to set everything up, this time equipped with my new NanoVNA. Sidenote: *longboards are great tables when you get to your destination.* + +![A photo from across the street](/images/posts/nanovna/area-2.jpg) + +## Antenna setup + +The setup of the day was comprised of some speaker wire and my [Elecraft KX2](https://elecraft.com/products/kx2-ssb-cw-data-80-10-m-transceiver). I planned to only operate on 20 meters, but ended up spending most of my time calling CQ on 7037Khz and barely touched the 20m band at all outside of some quick testing. + +Using the NanoVNA, I was able to perform a quick scan of a fair chunk of the amateur spectrum against my impromptu antenna. + +
+Band scan from 3-600mhz +Band scan of the 20m band +
+
+ +The images above were grabbed using the NanoVNA's screenshot capabilities, and I have the display configured to show SWR across the bands (yellow) and a Smith chart (green). First is a sweep of the spectrum, followed by a readout of just the 20 meter band. Quite nice! + +In conclusion, I quite like this tool, and really enjoy both its ease of use and ability to fit in my gear bag. + +![A photo from across the street](/images/posts/nanovna/setup.jpg) diff --git a/static/images/posts/nanovna/area-2.jpg b/static/images/posts/nanovna/area-2.jpg new file mode 100644 index 0000000..24d5393 Binary files /dev/null and b/static/images/posts/nanovna/area-2.jpg differ diff --git a/static/images/posts/nanovna/area.jpg b/static/images/posts/nanovna/area.jpg new file mode 100644 index 0000000..7508dcd Binary files /dev/null and b/static/images/posts/nanovna/area.jpg differ diff --git a/static/images/posts/nanovna/nanovna-capture-20m.png b/static/images/posts/nanovna/nanovna-capture-20m.png new file mode 100644 index 0000000..774c681 Binary files /dev/null and b/static/images/posts/nanovna/nanovna-capture-20m.png differ diff --git a/static/images/posts/nanovna/nanovna-capture-full.png b/static/images/posts/nanovna/nanovna-capture-full.png new file mode 100644 index 0000000..e74108c Binary files /dev/null and b/static/images/posts/nanovna/nanovna-capture-full.png differ diff --git a/static/images/posts/nanovna/nanovna.jpg b/static/images/posts/nanovna/nanovna.jpg new file mode 100644 index 0000000..a910cfa Binary files /dev/null and b/static/images/posts/nanovna/nanovna.jpg differ diff --git a/static/images/posts/nanovna/setup.jpg b/static/images/posts/nanovna/setup.jpg new file mode 100644 index 0000000..fa92db7 Binary files /dev/null and b/static/images/posts/nanovna/setup.jpg differ