In this video, I review the QRPGuys.com End-Fed Half-Wave Mini Tuner. This is a $25 kit that will tame the high impedance of an End-Fed antenna. With this, you can deploy a half-wavelength of wire without feeding it in the middle (like you would for a traditional dipole).
Easy to build. Works great. A nice little kit for your building pleasure!
Here are the basic tools that you will need for electronic projects. It’s a great time to tinker with electronics because there are so many radios, antennas, tuner, and other gadgets available as kits. Of course, you can “homebrew” your own gizmos, too!
Using a well-known circuit, I show you how to build a simple computer interface so your logging software can send CW through your radio.
The logging software simulates someone using a straight key. It changes the voltage on an RS-232 pin and the electronic circuit uses a transistor as a switch, grounding the lines as though someone grounded the contacts of a straight key.
This interface will let you work a contest or pile-up using your logging software – without having to use a key or paddle.
In this video, I show you one of my favorite places to work portable on Sunday mornings. (It’s a business park a couple of miles from my house and nobody’s working there on Sunday mornings.)
I made a few contacts (one shown in the video) before I rode my bike home to watch football.
I finish the video by making an argument for the Elecraft KX1 vs. the OHR 100A. To me, an internal keyer is a necessity in a CW-only QRP radio. That option pushes the OHR 100A up to $220. For $80 more, the Elecraft KX1 is a more capable, modern radio with a digital display – and it has upgrade options that aren’t available for the OHR 100A… like two additional bands (4 bands, total) and an internal antenna tuner.
I finished building the 40 meter version of the Oak Hills Research 100A QRP transceiver. I also added the internal keyer.
In this video, I share my final thoughts about the build and the radio.
Summary: It’s a great radio and I encourage you to build one. The documentation could use some tweaking to make it easier to understand a few of the more confusing steps. However, I built it without help and it worked right out of the gate. If I can do it, you can do it!
I’ve got most of the (many!) capacitors installed, along with the crystals, etc. The kit is coming along nicely and I’m enjoying it.
My friend Doug Miller (W4DML) says. “Soldering is Therapy.” I think there’s some truth to that. When you’re soldering, you’re concentrating so much on what you’re doing that any other thoughts are pushed out of your head. So, anything that’s bothering you goes away when building something.
Handling any object (like a soldering iron) that is 700 degrees Fahrenheit will cause one to concentrate – or suffer the consequences.