"More accurate" is a rather meaningless term in LRLs... however, I had intended to design a simple DDS-based oscillator, possibly PIC controlled.

Some may ask, "Why???" Cuz, some of the most expensive LRLs (up to $20,000, no kidding) claim that frequency precision is the "magic key". Well, maybe it's the magic key for getting someone to pay $20,000, but the dowsing rods sure ain't gonna know the difference.

However, building a DDS-based MFD/LRL is really just as simple as building a 8038-based circuit, or a 555-based circuit, and is just about as cheap. Even one with a keypad, LCD display, and programmability, can be done for well under $100.

But, no, I haven't gotten to it. I'd still like to, because 1) I'd like to start getting PICs into my projects, and 2) I'd like to build a good general-purpose DDS generator, for future use in metal detector transmitters. So, maybe soon, don't really know.

- Carl