On Wed, Jan 8, 2020 at 04:54 AM, KE8CPD wrote:
" Can anyone point to the correct chip? or any other tips to make my nanovna work about 300 mhz. "
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The NanoVNA only works to 300 MHz on fundamentals. Operation to 900 MHz or 1500 MHz is done using 3rd or 5th harmonics of the fundamentals. Although the si5351a is only spec'd to 200 MHz, it can be used to 300 MHz without cherry picking.
- Herb
