Audio/Radio Frequency Signal Generator
This RF/AF signal generator was an outgrowth of the HW-101 Direct Digital Synthesis (DDS) project. A need for an RF signal generator and the knowledge of the Analog Devices(tm) DDS chips which had been gained from the HW-101 project led to the development of this accessory. It turned out to be everything I had ever expected and more. Its frequency stability is as good as any amateur receiver you can purchase and the output level is equally stable. I have not tried it, but I would bet that I could use it for a QRP transmitter with about 100 mw of output.
The unit you seen in the photo above is the only one like it in existance. If you are interested in building one, send an email. N4YG is willing to share everything, including source code.