On Thu, Jun 12, 2025 at 12:59 AM <tommyt...@w5tech.com> wrote:

> Hi Martin,
>
> I have been trying to find out whether the lo-offset applies to the first
> LO or the second LO as there is no documentation on how it applies to a
> specific radio daughter card. From what I have learned, a lo-offset can
> apply regardless of the RF receive frequency is above or below 500MHz. When
> the RF Rx frequency > 500MHz the first RF stage uses direct frequency
> conversion. Hence, 1st LO is not used. This leads me to believe lo-offset
> applies the 2nd LO.
>

This is correct. Another way to think about this is to realize that the
lowband LO is nowhere near our signal of interest, i.e., it has a built-in
LO offset.
--M
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