That red wire touching that toroid could be picking up rf and coupling it to the toroid and generating the spurii
On Tue, Jul 2, 2019 at 01:24 AM, jim wrote:
Just out of idle curiosity, do you have access to another 12 volt supply..apply separate power to ubitx and the FET finals
Just to see....
Jim
?
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So, I just installed a LPF after the amplifier to the final mixer as exists on the v5 bitx, and it didn't change my spurs whatsoever.
?I've been running off a lead acid battery to eliminate power supply noise for these tests
