DDS DSB/AM transceiver 0-60MHz
I am trying to convert it to a transceiver, so don't build this yet!
The firmware for the DDS can be found here (source) and here (hex). The schematic of the transceiver is shown below.
The receiver can also receive AM
when the DDS frequency is set as that of the carrier. The picture below
shows how I made the receiver.
The DDS can work from 0 to 60MHz with any
step from 1Hz to 1MHz, selected by the position of the cursor on the
LCD. You need a suitable output LPF if you want to filter out the
high frequency and level spurs that start from 90MHz and all the way up
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