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Hello! :-)
I'm interested in homebrewing. I've been a SWL since 1986, and I'm a newcomer to amateur radio, although I have been interested in that since then too, and will be getting my ticket during the course of the following year. I now own a Yaesu FT-757GX which I use as my HF Gen coverage receiver so I can still listen to SW, and practice code and then get my ticket, while working on building the rig and slowly learning still. Mind you, I also have a Fluke 8050A DMM too that I bought last year which will help me. (Still learning how to use it) In an effort to help me learn more about electronics than I already know, not a whole lot at this point, I am going to build something with which I can use once I finally get my ticket. In search for helpful documentation, I found a book by Randy L. Henderson, titled "Build Your Own Intelligent Amateur Radio Transceiver". While now 10 years old, the book has many outdated components, and other errors in the book. While a good design idea, I think it could be improved on to 2006/2007 standards in many ways.. which I will attempt to do. The rig is based on the 80C31 / 8051 family with a 27C64 EPROM in with a 7805 regulator, and 74LS373 on the computer board. The computer board also listed as having: a 1N4001, a 1N4148, a 2N2222A, a 2N2907, and lastly a SK3444. It also featured a 100,000uF memory backup capacitor and a 6.2v Zener. My basic dimensions for the chassis are 16.1875" W x 6.1875" H x 15" D.. so that will be the working envelope of whatever design I end up with. That's a pretty big space, and I like having space to work inside. Well, anyhow this is my introductory post, and I'd love to hear your comments, suggestions, etc. Greg B. g b o w n e 1 @ y a h o o . c o m (remove spaces) |
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