Hey, I'm Jared and I'm a ham radio operator, callsign K0̸TFU. My local club is the Draper Ham Radio Association and I am also a member of the Utah VHF Society.

New Website

I got tired of updating WordPress, so I built a new static website using Jekyll. I think it looks better than the old one, it’s faster, and I dumped Google Analytics so there is no tracking or cookies. Even the fonts are served locally.

Maybe this will inspire me to write here more often.


TH-D74A Handheld


Once I decided to buy a radio, there are a million choices out there. I had no idea what exactly I was looking for, or what I would use, or how fast I would outgrow it and want something better. I knew I wanted a handheld, and that’s about it. Many people suggest that you should buy a cheap Baofeng as your first radio. That way you can expand your skills and learn what you really want and like before spending a lot of money. I ignored that advice. I figure that I’ll always want a handheld, so I might as well just get a good one.

After lots of research and looking carefully at many options I chose the Kenwood TH-D72A. It’s a 5W dual bander with built in GPS and APRS, and it’s splash proof and dust proof.

I immediately replaced the included rubber duck with a Diamond SRH320A triband antenna. This change made a marked improvement in both transmit and receive performance. If you were wondering if replacing the rubber duck antenna on your handheld is worth it, stop wondering and just buy a better antenna. Money well spent.

This antenna feels like if you bent it too much, it would permanently deform, or even worse, break. However, it has proved to be much sturdier than I expected. It’s been thrown in backpacks with other stuff, tossed in duffle bags with clothes, and bent every which way, with no ill effects. With the stock rubber duck antenna, the radio is 11” tall. With the SRH320A, it’s about 18.5” tall.

I have been very happy with this radio and antenna combo. Highly recommended.


Newly Licensed

When my dad was a kid, he built a ham radio from a kit, and strung up an antenna to the telephone pole in front of his house. The screw eye he put into the telephone pole is still there. After starting college, he sold his kit radio so he could buy shoes.

While finishing his degree in mathematics, my dad purchased one of the first electronic calculators, a HP-45.


It cost $399 in the early 1970’s, which is about $1,800 today. It could do arithmetic, which was nice, but the real draw was that it could do trigonometry and logarithmic functions. This made it much faster and more powerful than the slide rule it replaced. After graduating, he spent the first half of his career as a computer programmer, or what today we would call a software engineer.

Father also liked to tinker with stuff. I remember making a killer rubber band rifle using a jig saw, a few clothes pins, and some surgical tubing. It was stout enough to break plastic toys, and left a big welt on my brother’s leg when I shot him with it. My dad gave me an electronics kit, which had various components soldered on to a big breadboard, with little spring posts attached to each component. An enterprising youth could use the fistful of colored wires to create any of the two hundred projects in the included booklet. A little experimentation led to many other projects, including a doorbell/alarm for our bedroom, various kinds of sound generators, and a light activated digital counter.


My dad showed me how to use the transformer from my electric train set to make an incredibly strong electromagnet. Using the same transformer to apply current to a glass of water (which seemed incredibly dangerous to me), we created hydrogen and oxygen gasses via electrolysis. He helped me build a battery powered robot that looked like a turtle with wheels. It could roll around the floor, and would stop and turn when it ran into things. I named him Bert.

Back then, it cost real money, or a long time, to talk to people far away. Long distance phone calls were reserved for Mother’s Day and were never long. A cousin my age, whose dad was a dentist in the Air Force, always seemed to live far away. For a while they were stationed in the Netherlands. We occasionally exchanged letters with drawings of our latest spaceships, but it was hard for me to get excited about and stay focused on anything with a several month cycle time.

We frequently tuned in to broadcast FM and AM stations, for music, news, and college football games. In fact, I had constructed my own AM radio using the electronics kit, but tuning it required a delicate hand. At some point we got a shortwave receiver. It seemed to have some sort of magic not found in broadcast radio. Using only the metal telescoping antenna that came in the box, we occasionally managed to hear far away conversations in languages we couldn’t understand. We found a Morse Code chart in the Encyclopedia Britannica on the living room bookshelf, and tried to decipher the sing song tones we heard over the airwaves, but it was always beyond our skill. I pored over the previously uninteresting section of the HeathKit catalog (yes, someone has an old HealthKit catalog online) which contained shortwave transceivers, and dreamed of converting the closet under the stairs into my own ham shack. My interest soon waned, and I moved on to the next fascination.

I now have children of my own, and a modern tinker’s workbench consists of a computer, Minecraft, a quad copter drone, and a 3D printer instead of resistors and a soldering iron. The Internet makes communication with people on the other side of the planet commonplace and instantaneous. Podcasts and Spotify have replaced broadcast radio for the rising generation. But my father still listens to NPR on an old shortwave radio, and I still find magic in amateur radio.

I finally decided to get a license. To my delight, the Morse Code proficiency requirements had been removed. After few days of studying and a couple of online practice tests and I headed off to take the Technician exam. The week I had to wait between passing the exam and receiving my call sign seemed like forever.

Now we have a different word for tinkerers; we call them makers. Whatever you call it, I love to play around with stuff. Amateur radio is an integral part of that tinkering for me.