RadCom Plus, Vol. 2, No. 2

4 Third Method narrowband direct upconverter for the LF/ME bands
Following on from the circuit published in the May 2016 RadCom, Andy Talbot, G4JNT discusses the issues and solutions for making a direct SSB upconverter that is suitable for audio or digital modes

10 A journey into microwaves
Mark Jones, G0MGX gives us a starter for 10GHz, explaining a relatively inexpensive way to start transmitting on this interesting band—including making some of your own test equipment

16 Arduino SDR concept
Antony Watts, M6KWH condenses a seven week course on understanding and using the Arduino microcontroller with a practical look at how to make your own software-defined radio

25 Superhet ganging and tracking
Amateurs tend to avoid the issues surrounding ganging and tracking of superhet receivers as ‘too complicated’—Peter Chadwick, G3RZP addresses the problems and helps with the necessary calculations

28 A 70cm handheld using the DRA818U module
Can you build a 70cm handheld on perfboard? Why not! Clemens Verstappen, DL3ETW shows us how, with a little cunning and a magic module, you can make your own very interesting radio

EPUB edition

RadCom Plus is available in two formats.

The usual digital book format
An additional e-publication (EPUB) format intended to improve the reader experience and which allows the supplement to be downloaded and read offline

If you are already familiar with the EPUB format, you can download this edition by clicking the EPUB edition logo next to the cover picture.

If you haven’t used EPUB files before, we recommend you read the advice below.

The principle advantage of EPUB is the reflowable content.

This means that text can be resized and the display will optimise itself so that the text continues to fall only on the visible area making for a pleasant reading experience.

The EPUB format can easily be read on Apple devices and there are a large number of reader options on every platform including Android, Windows, Linux, etc.

This version is not intended for use on a Kindle but can be imported via an Amazon interface.

The RSGB recommends the following readers, but any suitable reader the user may have already will suffice.