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
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