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The SI570-based VFO is particularly interesting.
to dds electronics ham radio si570 vfo ... on 04 October 2009
LCD Digital Dial DDS VFO edit / delete
Nice simple-looking DDS kit based on an AD chip.
to dds electronics ham oscillator radio vfo ... on 22 September 2009
Various electronics projects -- very professionally done. The stuff about the SI570 DDS is particularly interesting, since I haven't seen it mentioned elsewhere and it's much easier to deal with than most DDS chips.
to dds electronics ham oscillator radio retrotech vco ... on 05 August 2007
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| - dds | |
| 3 | + electronics |
| 3 | + ham |
| 2 | + oscillator |
| 3 | + radio |
| 1 | + retrotech |
| 1 | + si570 |
| 1 | + vco |
| 2 | + vfo |
tasty by Adam Sampson.