A quick book review of "Perelandra" By C. S. Lewis.
Decided to have a go at making an image with A.I.
This was generated by deepai.It represents Tinidril.

 Let's see if I can stir up some mud.

What is Science?

Video:

 Remember this antenna I was working on?

Well, I had no idea of how well it would perform or its
characteristics, well, now I do, here is a graph of
the SWR on it across the entire HF spectrum:

The SWR is high (sometimes EXCEEDINGLY high)
where I need it low, and low where I don't care.

It does this same form of pattern right up to
about 54 Mhz, then there is one last dip at around 60 Mhz,
from there up, it is high.

I have been using it with an antenna tuner, but, due to
the location on our deck, and the, sub-optimal
performance shown above, I'm not making a horrendous
number of contacts.

Add having to use low power and I am not overly impressed,
guess I need to change the design...

Oh well, onward and upward.

Update:

The connection between the VNA and the antenna
was jury-rigged in the image above, but, with a
proper SMA to PL259 adapter, the differences
aren't that great.

じゃまた

Well, I won a scope!

I just don't win stuff, so, I am chuffed.
This was actually a couple of years ago, but hey,
better posted later than never, right? 😁

 Well that was R*E*A*L fun...

NOT!

 So this will be a quick post, links mostly.

I decided to get a Beitian BN-880 GPS/Compass module
for experiments I have in mind.

So, I hooked it up to an Arduino Uno.
Here is the wiring diagram:

Note, the wiring colors are meaningless, as each
manufacturer supplies cables with different colored
leads. As you can see here, red is not power, and
black is not ground.

 The sketch I used to test the set-up came from the GPS library:

TinyGPS++

Click for Github page.

The sketch I demo in the video is the basic example.

 The video:

じゃまた

 If you want to see my projects in video format, visit my VLOG:

https://rumble.com/user/number6of1

 じゃまた

 I decided to take a breather from the SWR bridge and the swr sweeper to build this: it's my build of a "Duinovox" Basically an automated T/R switch for use with digital modes. The original design is by Kevin Loughin, KB9RLW. His blog is here: KB9RLW Blog.

Kevin's Youtube page is here: Duinovox KB9RLW.

Which is where I first saw it, not too long ago actually. The big difference between Kevin's unit, and the one I have built is that I designed a quick and dirty PCB in Kicad, then had it manufactured at OSH Park. (I hate point-to-point wiring) The board is not the prettiest I've ever designed, but it will do....

Here's my unit:

I also added an on-board regulated power supply, as I was going to keep my USB sound card external to the case I eventually put this into.

I will give a report a little later, plus, I will have a Rumble video up as well.

"Keep your stick on the ice, we're all pulling for you"

Red Green

じゃまた