[Elecraft] [K3] ideas for re-purposing our old K3 synthesizers

[Phil Wheeler]

Ah, but the original KSYN3 does have a nice chunk 
of Aluminum attached :-)

73, Phil W7OX

On 6/24/15 10:06 PM, Wayne Burdick wrote:
> Hi Steve,
>
> Not to throw cold water on this, but.... the original KSYN3 requires a ton of firmware support, including a hand-tweaked table of thousands of PLL divider values pre-calculated and stored in flash memory. We shoehorn the DDS reference signal through a 3-kHz wide crystal filter in order to ensure no close-in spurs, then adjust the PLL divider values in real time so there are no gaps in the tuning range despite a nominal 20-kHz PLL step size. Lots of idiosyncratic math, and a critical calibration step ("VCO CAL").
>
> So if each of your repurposed KSYN3s comes with a K3 front panel MCU and flash, no problem :)
>
> 73,
> Wayne
> N6KR