On Mon, 21 Jan 2013, [email protected] wrote:
Hi Markus,
but was toying with the idea of doing WSPR via the RS232 and AD09850...
an excellent idea!
On the other hand, having just looked at the DF6NM code for the dds and
WSPR and being most impressed by same, perhaps I should focus instead on
seeking stability and coherence.
The plan is to multiply a 10 MHz OXCO by three and feed it to an AD9851.
Could this be done with the gates of a TTL 7400 to take the sine to
a nice rich square then to a 30 MHz tuned circuit to an output gate
to the dds? Perhaps this is a silly idea. Either way, comments both
negative and favourable will be appreciated.
VX9MRC is still doing CW on 504.1 kHz. The carrier was generated by a
home brewed ad9850 with tiny connecting wires painstakingly soldered
to the pins. The boards Markus mentioned and Graham recommended a
while back are well worth their cost!
73
Joe VO1NA
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