SHACK
Welcome to my projects page
Here are a few of my projects I have done in the shack, by now you should see that I like making gizmo's that are very useful. Some projects such as un-un's and baluns I have made from sheer necessity, since I run a fixed portable station. Since I must work so much harder to get a signal out at my current location. I think I do fairly well in accomplishing this . I'm involved in QRP operation and backpacking when I can, but now and then I will run a whopping 100 watts from my exciters. I hope I can give you just a little inspiration on doing some projects yourself. Some projects that don't show up here are computer projects that I'm always whipping up. I'm into software and internet programing and design, which includes graphic design. Maybe I might fine enough room to display a few computer related projects here.
UN-UN'S and Baluns
The unun should find some important applications. Until recently, they have been literally impossible to obtain. But now they can be designed to match 50-ohm cable to loads as small as 3.125 ohms and as high as 800 ohms (both unbalanced loads). They can come in low-power and high-power versions as well as multimatch designs. An important application for ununs is to match 50-ohm cable to the input impedance of ground-fed antennas such as verticals, slopers, inverted L's and towers performing as verticals. Since ground losses play a large role with these systems, a knowledge of the input impedance of the antenna as well as the ground loss is important in determining the optimum impedance ratio. The low-power multimatch unun should find use in the operating room when an unfavorable impedance is presented to the transceiver. Also, a high impedance, multimatch unun can be easily designed to match 50-ohm cable to the input impedance of Beverage antennas. It should also be pointed out that ununs can be employed in series with baluns to provide a host of wideband baluns and ununs with ratios which have been previously unattainable.
Some finished projects in the shack
Here are a few projects in my shack, they include a 4.1 un-un a microphone balanced to unbalanced convertion box with ptt. You can hook up any balanced type microphone to you rig by making up the proper cable, and have ptt abilities. The large tupperware container houses a sg-239 auto coupler witch protects it from the wx.
SG-239 COUPLER project
This is my sgc-239 tuner project. I have made a container to provided a watertight container for the tuner for outside use.
the SG-239 seems best designed for, portable use such as:
Backpacking, camping, light-duty work away from home, creative antenna
applications. I used a common tupperware container to fit this job. Here are some good links that have Tutorials and some great ideas. The SG-239 - Making a Waterproof Case by David H. Hatch - N9ZRT and MM0ANT's SG-239 Project