A lot of the modern signal generator projects are based on the Analog
Devices AD9850. Analog Devices actually encourages hams to use their sample
service, so the part itself is no problem. It is relatively simple to
program, so you may choose the microcontroller of your choice, although most
of the projects out there seem to lean toward the PIC.

The challenge could well be the circuit board. The 9850 is only available
in TSSOP so you need a good quality circuit board to attach it to. If your
PCB skills are good this won't be a problem. But if not, you might need to
hunat around for a protoboard or something of that ilk that you can get in
your location. Unfortunately, these tend to be kind of pricey.

...

"Steven Swift" wrote in message
...
"W3JDR" writes:

...the group IS called "rec.radio.amateur.homebrew"..isn't it?. Why would
someone be advised to buy when he asks for advice in a group dedicated to
building???

Joe

And it is fund to build stuff. The old sig gens were pretty simple, with
most of the hard work on the dial. The Eico 320 was pretty popular and
you can use the manual to build one of your own:
http://www.nostalgiaair.org/Referenc.../EIC/EIC_8.zip

But you can replace the triodes with fets, lower the voltage to 12 volts
and
get the same results.

Steve.
--
Steven D. Swift, , http://www.novatech-instr.com
NOVATECH INSTRUMENTS, INC. P.O. Box 55997
206.301.8986, fax 206.363.4367 Seattle, Washington 98155 USA