Two Tone Generator

Here in lies a story of how one thing leads to another.
I decided to build a home brew transceiver that I could use (more on this in subsequent posts). I needed a power amplifier (PA) that could be used with the exciter and that led to several designs and much frustration. However, when a PA is built how does one test it? Yes, power output and of course linearity. I hear you; a PA requires many more tests and parameters that can prove it works well, but, I wasn’t shooting for the moon. So I stumbled on a device called a two tone generator and that led me to building one. Why buy when you can build, especially if a junk box is available and la voila… I have everything.

So I searched and finally convinced myself that I had the ultimate circuit a.k.a the simplest one that would allow me to ‘test’ my home brew PA. Spoiler Alert: No tests on a live PA will be conducted in this section of the blog.

There are of course a number of ways that a two-tone generator can be achieved and I’ve included some links.
https://dk7ih.de/a-simple-2-tone-generator-for-testing-the-linearity-of-ssb-transmitters/

Maybe if I get a bit more adventurous, I’d like to try this one, and vary the frequencies a bit?

https://www.pc2c.nl/two_tone_gen.php

Posted in Amateur Radio, Uncategorized

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: