Software Defined Radio Transceiver: Theory and Construction of the T41-ep Amateur Radio SDT

I bought the book and read it cover to cover. Jack and Al explain their Software Defined Transceiver (SDT) in terms that most hams can understand. I am no engineer, but using the book, I was able to gather the parts, buy the PC boards and build a working transceiver! I now have a MUCH better understanding of SDR (SDT...). As an old PL/I, Fortran and COBOL programmer, my understanding of C and its derivatives is very low. Jack provides insight into why he codes things the way he does. This has expanded my thought process considerably as I write my own Arduino/Teensy code.The early editions of this book had some typos, but despite negative reviews for this, I still found the book completely usable. Grammar errors (many obviously the result of a spell-checker), did not detract from the technical aspects nor from the readability. The few technical typos were easy to spot and did not lead the reader astray.I highly recommend this book whether you intend to build the T41 transceiver or not.73,Len, KD0RC

I am a retired electronics engineer and software developer and ham operator (AD0FT), so I am the ideal user of this book. I only started reading this book yesterday (after it arrived) and so far find it to be very clearly written while being very informative. And the font of the print is a nice size, too. I have been using SDR receivers for about 10 years now, but bought instead of built because they were so inexpensive and easy to use. Now I am interested in the transmitter aspect and this book was recommended by my friend, Mike KE0TPE. The right book at the right time.

In my opinion this is the best of all of the excellent books written by Jack Purdum. I appreciate his down to earth writing style and the information he provides without all of the irrelevant fluff found in other technical and software books I have purchased and real most all of his pervious books and this book is excellent as is all of the others I have read. I have an extra-class ham license and appreciate the technical information from two fellow hams. If you are interested in electronics, or ham radio you will not be disappointed in this book. Take time to read it all because there is great information in every part of every chapter.

This is an amazing book that describes the design, theory and construction of a Software Defined Radio. It is both comprehensive and well laid out. I'm excited to learn about SDR and to actually build a radio using what I learn.I for one don't understand the reviewer who complained about lack of digital mode features. A review of the book would have been more appropriate. And the reviewer could just add digital modes to the radio using the knowledge learned by reading the book.

I bought this book directly from the authors in May 2022. Just as in their 2020 book, "Microcontroller Projects for Amateur Radio," Jack Purdum and Al Peter are on a mission to get radio hams building homebrew electronics again. "Software Defined Radio Transceiver," or let's just call it the "T41 Book," covers the theory and construction of a full-featured five-band HF software-defined transceiver. The authors know how to navigate the modern world of electronic modules, surface-mount components and high-level, open-source microcontroller software. They try to pass their knowledge along to the reader, and mostly succeed. This is not a toy project, but a ham builder should be able to reproduce the T41-EP transceiver with patience and perseverance.Buyers should know a few things. As of the end of June 2022, the book is still riddled with annoying typos. The project very much depends on its online support group (see page 16). The software is still a work in progress. All that said, though, Purdum and Peter have once again succeeded in pushing the state of amateur radio homebrewing forward into the 21st century.

This is an excellent book. whether just for the well paced discussion on SDR software design or much later in the book, a way of putting theory in to reality and actually constructing a SDR transceiver. This is a book that will start many discussions. It will certainly help anyone who has ever wondered about software defined radio. This is the way present designs are all heading and is certainly the future. When you get to the end of the book I am sure you will be tempted to construct the SDR transceiver which is used as an example throughout. buy and learn!

Details of design and development of a sophisticated SDR transceiver in an unusual form. Rarely is an amateur electronic project design described in such detail. The book gives enough detail to understand the optimization choices the authors faced as they developed and improved their SDR transceiver. The reading level is fairly high, with presentation of complex electronic circuit detail suitable for engineering level readers. This is not a Heathkit step by step assembly guide, nor is it a textbook on generic RF transceiver design. The book is a guide to understanding the modular T41 SDR QRP transceiver in parallel with your construction of the various sections of the radio.

Thanks Jack and Al for a great book, I'm thoroughly enjoying it and can't wait for the kit form to release soon!Not sure I understand the 2star comment, over on the US Amazon site... The radio doesn't attempt, in it's current form, to do digital modes, it's not on it's feature list. ( I don't complain about my bicycle's cargo hauling capability either... )This book, and upcoming radio kit does one better... it is an Experimenters Platform ( EP right in its name ) and provides the experimenter the access to the internals to implement digital modes, or whatever other feature they may want to do...This book is the first part of that access laying out the internals in a clear and approachable format that makes for a great read.Thanks again and 73.

Ottimo libro, lo consiglio a chi vuole approfondire il Software Defined Radio da un un punto di vista progettuale.

This book is a companion to the build it yourself software defined transceiver (experimental platform) designed by the authors. It explains, without the heavy math theory most SDR books dive into, the theory behind SDR's and how this is implemented in the transceiver. It is an easy and informative read. Initial versions of this book contained some typos but as this book is printed on demand by Amazon the authors have corrected these and also made hi-res colour images available on their groups . io site. Nevertheless despite having an early version of the book these did not curtail my enjoyment of it (some people will always moan). If you are a radio amateur wanting to build the SDT-EP and want to know how and why it works or if you just want an easy to understand explanation of the theory behind SDR's I highly recommend this book.

Dies ist ein Buch primär für lizenzierte Funkamateure, die sich entweder einen "Software Defined Transceiver" selber bauen wollen oder die ihn zumindest verstehen wollen.In einem sehr lockeren American English wird das Konzept, der Aufbau, die benötigten Werkzeuge und Messmittel sowie die Theorie erläutert.Mir hat das Lesen Spaß gemacht und ich freue mich darauf, das Gerät nachzubauen, sobald die Software und die PCBs (8 Stück, alle max. 100x100mm) veröffentlich sind, was Mitte May 2022 der Fall sein soll.Jeder für den Arduino IDE, Teensy, SDR keine exotischen Begriffe sind, sollte einen Nutzen aus diesem Buch ziehen können, denn es ist sehr praxisorientiert geschrieben. Das geht bis zu Empfehlungen, dass man keine SMD-Bauteile ausbreiten soll, wenn eine Katze in der Nähe ist ;-)Durch die sehr große Schrift sollten auch ältere Leser keine Probleme haben.Wenn Euch diese Bewertung geholfen hat, gebt mir bitte ein "Nützlich".

Learn more about SDR techniques. And especially to put these techniques into practice by building a transceiver. Make the distinction by explaining that SDR stands for Software Defined Receive and SDT stands for Software Defined Transmit. A transceiver using technologies well known to radio amateurs (QSD/QSE).F1BFU Gilles