I think the only thing that is for sure is that this is very poorly documented.
The schematic shows two resistors, the assembly manual shows one, and the
correct value of the one (by my measurement) is unknown. Whether or not it is,
or isn't, used is another unknown. It seems to me that Elecraft could comment
on this and clear this up, but that hasn't been forthcoming. Silence isn't
always golden.
Wes N7WS
On 12/15/2021 3:52 PM, Al Lorona wrote:
Have we, in fact, established that this attenuator is enabled at any point of
the tune cycle? Because if not, then we're all spun up for nothing.
Is it reasonable to believe that the attenuator was one of those design
elements that might have been deemed necessary at one time but then the
designers changed their mind for the finished product? I think so. The
mysterious R7 may have been left off of the final circuit board precisely to
cause such a bad mismatch that it would be obvious to operator, software, or
both, and so that corrective action could be taken.
Al W6LX/4
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