[Hallicrafters] Revolutionary Signal Generator

[Ross Stenberg]

This is not perfect, just an example.

	73 Ross K9COX

    "Some three years ago we introduced the original DDS Daughtercard
(www.njqrp.org/dds) to the QRP community, providing a low cost and modular
way to add a precisely-adjustable 0-30 MHz signal generator to one's
project. All you had to do was add an AD9850 DDS chip (available as a free
sample from the good people at Analog Devices) and +12V, and then any number
of popular microcontrollers could control the DDS Daughtercard to have it
serve as a rock-solid VFO.  Over 1,000 of these little cards were sold!

    Well, there is still a demand for this inexpensive little kit and an
ever-growing list of uses for it so we updated the basic design and are now
ready to provide the new_and_improved  DDS-60 daughtercard. This
self-contained functional module generates a good-quality RF signal from
1-60 MHz by using a small pc board to contain just the bare DDS essentials -
an Analog Devices AD9851 DDS chip, a clock oscillator, a 5th-order elliptic
filter and an adjustable-level RF amplifier.  Additionally, an onboard 5V
regulator is provided so you only need provide a battery or power supply
ranging anywhere from 8-16V DC. The three digital control lines, the power
supply, and the output signal are all available on a pin header at the board
edge, and the DDS-60 is pin-compatible with the original DDS Daughtercard.
The schematic is shown below on this page. Kit price is $28"

http://www.amqrp.org/kits/dds60/index.html