October 20th I had the pleasure of helping the local scoutmasters and den mothers with introducing their troops to the wonderful world of ham radio. Our callsign for the event was WN4BSA. This was the first time that I had ever volunteered for such an event, but I am glad that I did, as I had a really good time showing off ham radio. I was sort of a last minute fill in as one of the local hams had to pull out because his wife was going into the hospital.
I teamed up with Dave Merrits, AE4ZR Friday afternoon before the event to get things set up. Not having ever participated in an event like this but having plenty of experience of my own in the field , I prepared a go kit full of everything from insulators to bug spray. I also brought my XYL's Icom V-8000, my 40 meter Rockmite QRP CW rig, and a homebrew co-liniar ladder line antenna for two meters. Dave told me that the Trident Amateur Radio Club had supplied us with a Yaesu FT-897D, a couple of manual tuners, coax, a 20 meter dipole, and a Kenwood 2 meter rig. The only thing we needed to get was some supplies for dinner and breakfast, which a quick stop at Wally World took care of.
Upon arrival an Camp Moultrie, we met up with the park ranger and found our way to our campsite which was located not far from Lake Moultrie. Dave, Murphy, and I worked feverishly until around 10 PM setting up the equipment and antennas, of which was not an easy task as we had some problems with on of the tuners and neither of us were familiar with the HF rig. Naturally, we did not have a book so it took some time to get through the menus and figure out how to run the rig. We also decided to use the Icom V-8000 for our 2 meter station. We finally got things up and running around 11 PM ate some dinner and hit the hay.
The scouts started arriving around 7 AM to set up their respective camp sites and we checked the equipment one last time and made some last minute preparations. Dave had brought along some of the wallpaper that he has collected to show the scouts, and I had brought along a stack of QSL cards from my contacts around the world. I also set up a demonstration with my Rockmite 40 meter CW QRP rig and homebrew end fed tuner that I had built for the kids to see and hear.
JOTA finally began around 8 AM at the camp, and I have to admit, I was a bit nervous doing the public relations thing. I was not used to talking to the groups of people but did ok once the stagefright went away. Dave and I took turns addressing the folks, and then we took volunteers to get on the air. . Everyone including the adults really enjoyed the QSL cards and wallpaper that Dave brought along as well. I think that the scouts favorite QSL card was hands down the one from NA1ISS.
We had mostly cub scouts but they did a really fantastic job making contacts with other JOTA stations. May thanks goes out to the hams who jumped in there and talked to the scouts as well, your participation was greatly appreciated! There was a huge interest in the Rockmite, I think that it got more attention from the kids than anything else. They really were thrilled to hear the CW stations on the air.
We had visitors from troops 725,453,750,737,409,737,and 700. In the end, we made six two meter contacts and 13 contacts with other JOTA stations on HF. Our scouts made contacts into Illinois, Texas, Ohio, Pennsylvania, and Ottawa,Canada. To see the pictures of JOTA at Camp Moultrie, click here....
Disclaimer: All books are NOT new, they are used and considered to be in good condition, with some minor wear and tear due to age unless otherwise described. All items are described to the best of my ability, all sales final, no returns.
By Donald E. Lancaster
This book will help the electronics experimenter understand and use the low cost digital integrated circuits now available for practical electronics projects. The material presented attempts to shatter the myth that digital IC's are too expensive, too complex, or too awesome to use intelligently in simple circuits.
In addition, this book shows the technician the why of digital IC's-how they work, how to use them, and how to design with them. It tells how digital instruments work and how to design and build your own fully integrated IC systems.
Also, this book should be valuable to the engineer who is tired of wading through a stack of application notes and pre-IC computer books to try to find realistic and reasonable designs for such things as divide-by-n scalers, low cost decimal counter/readouts, IC monostables, synchronizers, or other circuits. The three chapters on counting flip-flops, dividing by-n counting and decimal counting provide circuits virtually ready for immediate use.
The reason this book deals entirely with Resistor Transistor Logic (RTL) are relatively low prices of this digital IC line, the ease of with which it can be understood, and the ease of which it can be interfaced with conventional transistor circuitry.
By Don C. Miller W9NPT & Ralph Taggart WB8DQT
First Edition Printed 72 Revised Edition Printed Oct. 73 Copyright 1973 by 73 Inc.
Table Of Contents:
Chapter 1: Basic Principles of Slow Scan TV
Chapter 2: Popular Slow Scan Television Circuits
Chapter 3: Slow Scan Television Monitors
Chapter 4: Flying Spot Scanners
Chapter 5: Live Vidicon Cameras
Chapter 6: Color Slow Scan Television
Chapter 7: Applications of Audio Filters for SSTV
Chapter 8: Independent Sideband
Chapter 9: Slow Scan Television Test Equipment
Chapter 10: Miscellaneous Topics
Chapter 11: Commercial Slow scan Television Equipment
Biasing diagrams for devices used in text
Condition: VERY GOOD. Light rubbing wear to front & back cover, spine has small piece missing, former owners signature on back cover. Pages are slightly yellowed due to age, no missing pages.
Technical Series CMS-271 1972 RCA
This manual, like its preceding edition, has been prepared to provide an understanding of the basic principles involved in the design, fabrication, and application of COS/MOS digital integrated circuits. The basic fundamentals, features, and characteristics, building block elements, and logic system design rules for complementary-symmetry/metal oxide semiconductor (COS/MOS) integrated circuits are explained.
Design examples and performance data are then given for the use of COS/MOS integrated circuits in a variety of circuit applications, including NOR and NAND gates, arithmetic units, multivibrators, sinusoidal oscillators, counters and registers, digital display systems, and frequency synthesizers. The manual also features a circuits section that provides design ideas for the use of COS/MOS integrated circuits in twenty five practical circuit applications.
This new edition has been updated and substantially expanded to include descriptive data on recently announced RCA COS/MOS integrated circuits and to provide broader more extensive application information. This manual is intended primarily as a guide to circuit and system designers; it is also useful to students, educators, technicians, and others interested in the use of solid state devices and circuits.
Overall good condition, spine not broken. Small creases on top and bottom of front cover, no pages missing.Former owners signature on top right front cover. Light chafing on pages.
by Rufus P. Turner
The family of transistors contains many members besides the conventional bipolar transistor that has been widely accepted in electronics technology. Among the lesser known types are the unijunction transistor and the field-effect transistor (FET). This book provides an opportunity for technicians to become acquainted with the latter.
The distinctive feature of the field effect transistor (FET) that sets it apart from other transistors is its high input impedance. This it resembles a vacuum tube in operation, although it is a transistor in construction. It has been said that the transition from tubes to transistors would have been much more orderly and logical if the FET had preceded the bipolar transistor in development, since there is so little change in circuitry and operation.
FET Circuits is devoted almost entirely to a discussion of actual workable circuits using field-effect transistors. While the essential facts of construction and theoretical operation are included in the introductory chapter, this book stresses applications. Amplifiers and oscillators each have a chapter of their own. Practical circuits for broadcast band and all-wave receivers make up another chapter.
Transmitters with their accessory equipment are described in detail. Various test instruments that can use FET's to advantage in their circuitry are also covered. Included in the appendices are lists of manufacturers and drawings of basing diagrams for the FET's discussed in the book, for those who wish to experiment with FET's on their own. Technicians, hobbyists, and experimenters will find FET Circuits a valuable aid in their search for up to date information.
Light creases on front and back covers.
The purpose of this handbook is to provide a fully indexed and cross-referenced collection of linear integrated circuit applications using both monolithic and hybrid circuits from National Semiconductor.
Individual application notes are normally written to explain the operation and use of one particular device or to detail various methods of accomplishing a given function. The organization of this handbook takes advantage of this innate coherence by keeping each application note intact, arranging them in numerical order, and providing a detailed Subject Index composed of approximately 1200 references to the main body of the text. This Subject Index provides the key to efficient access to the applications experience accumulated over the last five years by National Semiconductor.
Usual wear and tear to front & back covers, spine. No missing pages, and the pages are clean. Small stain on front cover from removed sticker. Former owners signature in top right of front cover.
This DATABOOK contains application notes on linear integrated circuits and DMOS (discrete MOS field-effect) devices presently available from RCA Solid State Division as standard products. Data sheets on both linear IC's and DMOS devices are contained in a seperate DATABOOK, SSD-201C.
For ease of reference, the application notes in this book are arranged in numerical sequence. The index on pages 6-8 groups the notes in the same categories used in the SSD-201C selection charts: (a) operational amplifiers; (b) arrays; (c) differential and broadband (video) amplifiers; (d) power-control, computer interface, and analog-multiplier circuits; (e) consumer circuits; (f) DMOS devices.