At 7/16/2008 20:04, you wrote:

>This would.
><<http://www.expandedspectrumsystems.com/prod7.html>http://www.expandedspectrumsystems.com/prod7.html>

A mini PLL synthesizer.  I'd think a DDS would be more cost-effective & 
versatile now.  Some DDSs such as the AD9834 also have provision for FM, 
which should yield highly linear modulation.  Pair one of these up with a 
PIC to load the frequency tuning word & you're good to go.  At around $10 a 
chip, & with most PICs much less than that, a sub-$50 product should be 
possible, which would make it a little more attractive.  $160 to fully 
synthesize a crystal-controlled radio isn't quite worth the expense IMO.

Bob NO6B

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