This guy made an interesting thing for his PC.
Analog Meter to show PC usage.
This guy made an interesting thing for his PC.
Analog Meter to show PC usage.
So, for work development use, I bought the iPad mini 6th Gen. I tested out the performance with Geekbench ML. According to Geekbench ML, iPad mini 6th Gen. has 3.78GB of RAM.
Enjoy!
I used SDR Touch and the required driver to make DS-DT305BK have SDR (software defined radio) capabilities with Google Pixel 5.
I could listen to FM Yokohama with it.
SDR Touchとドライバをインストールして、Android 11のPixel 5でSDR (ソフトウェアデファインドラジオ)ができました。使ったのはANKERのUSB-CからUSB / HDMI等のアダプタです。使ったのは昔のワンセグチューナーUSB、DS-DT305BKです。
-stingraze
Hi guys. Thanks for reading this post.
I just wanted to share what my daily driver electronics are from a standpoint of a startup CEO in Japan.
So, I mainly use Macbook Pro 2019 with a Core i7. It has 16GB of RAM. I use it for development purposes, and mostly use Sublime Text, PHP and Python 3.
My current daily driver phones are SONY XPERIA XZ3 (au) and Cosmo Communicator by Planet Computers. I use a Rakuten Mobile SIM card for XPERIA XZ3 and UQ Mobile SIM card for Cosmo Communicator.
The XPERIA XZ3 is only 4G, but Rakuten Mobile SIM card supports 5G. I am thinking of trying out 5G soon, but the area in Japan is still limited, so I guess I have to go to a location where they have 5G with my 5G phone.
Cosmo Communicator has a keyboard, so I use it for writing on it, and it's pretty good. I wish sometimes that it will input very precisely, but I guess that's kind of made on purpose to mimic the PSION keyboard? Maybe.
I might change my SIM to Docomo, but the fact that I can get 4GB of data cheaply with UQ Mobile is still attractive for me.
Well, that's all for now.
Tsubasa Kato 6/3/2021
CQ CQ CQ this is AC3GI CQ CQ CQ
What does that
mean? Well, chances are, unless you happen to be a HAM or know one, you are
scratching your head wondering what foreign language I am speaking right now.
CQ CQ CQ this
is Alpha Charlie Three Gulf India, Alpha Charlie Three Gulf India, Alpha
Charlie Three Gulf India, Alpha Charlie Three Gulf India, CQ CQ CQ.
So, what does
CQ mean and why am I talking like that? Simply put, CQ is a the term HAMs use
to annouce we are looking for a QSO. Huh? A what? A QSO is a conversation
between HAM radio operators. When I get onto HF (high frequency) bands such as
20 meters, I will find an empty spot where I hear silence, and ask twice, about
30 seconds or so apart, if anyone is using the frequency right now. If nothing
is heard? I start calling out CQ, as I did above, every 30 seconds or so. As it
sounds like when read aloud, CQ is "seek you" and an open
invititation for someone listening to respond!
The purpose of
this post, as you may have guessed, is about my journey into the world of HAM
radio! There is quite a bit of crossover between the old technology we talk
about here and HAM radio. That doesn't mean there isn't anything new and
exciting in the radio world though. Current radios are a lot different than the
old days. We have radios with color touchscreens, digital signal modes, and all
kinds of fun bells and whistles! These aren't
the radios that your parents or maybe even grandparents used to use and
tinker with. I wanted to start this post off with the most common thing you
will hear, and maybe even transmit yourself, on a HF radio.
My journey into
radio began back in 2008 in fact, but didn't actually get off the ground until
2020. Way back in the day, my dad had a Yaesu FT101ee that was used as a CB as
he didn't have a HAM license. To get a license back then, much like today, you
need to pass a test. Unlike today however, they didn't publish the question
pools online to study, and part of getting the license was being able to do Morse
code. They have removed the code requirement now though. We decided to take
this radio home from my grandparent's house, so I started to look into being
able to use it.
I spent a lot
of time on IRC, using the Freenode server and the #hamradio channel. My first
goal was to figure out the antenna. The hard part wasn't so much building one,
but figuring out how and where I would be able to put the antenna. A simple
antenna is a wire dipole, which is two pieces of wire, each a quarter
wavelength long, with a transformer in the midde called a BalUn. A BalUn simple
takes a balanced load to an unbalanced load. With something like the 160m band,
that means an antenna about 260 feet long. I had someone who offered to send me
an antenna, but we lost contact and I never did get it.
Eventually, other
things took over and the radio was forgotten about, and sat under the desk.
Sometimes, I would think about getting a Baofeng handheld but never actually
bit the bullet and ordered one. Fast forward to July of 2020 where my dad
mentions that with everything going on in the world, I should get one in case
anything happened. I finally ordered one, with the extra extended battery,
programming cable, and a whip antenna, for 50 dollars off Amazon. That prompted
me to start looking into getting the test taken, and getting the needed
license, to allow me to transmit.
I started
looking around Facebook, and decided to put a post on a local community page
asking the local HAMs what repeaters were the most active to listen to. I
became friends with one, who was able to reach out to a local club in
order to get me tested. I spoke to a few others, and tried finding a test, but
it was in the middle of the Covid pandemic and most clubs were not doing in
person testing. They have recently started doing online testing but it involved
things such as having to use your phone and webcam, so I decided to wait for an
in person test. In the meantime, I kept studying, using a website called Ham
Study (www.hamstudy.org) as well as buying their app on phone. Any free chance
I had was spent running through the question pools.
There are
currently 3 levels of license. Technician is the basic one which allows you to
get on the air with VHF and UHF radios, and some limited access to HF. The next
level, general, opens up most of the HF, and extra, which gives you access to all
portions of the bands. If you pass one level, they allow you to try the next one,
so I was able to pass all 3 tests in one go. This means that I am an extra class
HAM.
Upon passing my
tests, the first thing I did was to order an Icom IC7300, which is 160m through
10m, plus 6m. I ordered everything needed to build an antenna, and besides the waiting
for the BalUn to come, I also needed to wait for the FCC to assign and post my callsign,
before I could transmit. It took 12 days from testing to be issued my call, but
it can be much quicker when done through an online test.
My call, AC3GI,
is a 2x2 callsign. Most will be in the 3x3 format, and they are assigned sequentially.
I had the chance to speak to someone who had the callsign AC2GI. The number is a
region code, since I am from Pennsylvania, I was assigned a 3. There are regions
0-9 for the United States, and other countries will have different formats. I have
made a few DX QSOs, or contacts outside of my country, such as to someone in Germany.
I ended up needing
to order a better power supply, an Astron RS-35, which is a linear power supply.
A linear power supply will output much less interference than a switching power
supply will, but that doesn’t mean a switching power supply is bad. I bought
the one a few people recommended, and I actually ended up buying a second one from
another local HAM to have as a backup or to use outside.
The next radio I
had bought was a mobile 2m and 70cm Yaesu FTM-7250D to use at my desk. A mobile
radio will often put out 50w, compared to the typical 5w a handheld radio will put
out. I ordered a Diamond x50a antenna and 75 feet of coax. On simplex, or radio
to radio, without using a repeater, the extra power as well as the DB gain from
the antenna, allows me to get my signal out much farther.
VHF and UHF signals,
unlike HF, do not bounce, so you are limited to how far they will typically go.
With HF, you can often get out rather far when band conditions are good. I was able
to get into Germany on 20m, a good band during the day, with 100w and a simple wire
antenna. I use an off center fed dipole, so instead of equal lengths, mine is 45
feet in the short side and 90 feet on the long side.
The Yaesu does a
digital mode known as Fusion, or more properly, C4FM. I also have two DMR radios,
another digital more. The TYT MD-UV380 and MD-9600, a handheld and a mobile, that
do VHF and UHF. C4FM is far easier to program and there are some local repeaters
here for both modes. The Yaesu also does something called Wires-X which is an internet
link system. I have talked to people from the UK using this on a local repeater
as well. You can also get little hotspot devices, which are typically a Raspberry
Pi and a low power radio, to get into the internet link side of radio if there isn’t
a repeater near by.