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We will use the geographic latitudes and longitudes to establish pad location in this document. We will calculate the length of the possible baselines using pad positions. We will also calculate length and complexity of the roads, fiber and power networks needed using pad positions. We will use $B$ as the maximum array element separation in any single configuration.  \subsection{Receiver Aspects}  \subsubsection{Bandwidth}  Assuming We will use $\lambda_{max} - \lambda_{min}$ as the array bandwidth for this document. This assumes  the array is, or can be, instrumented for operation at wavelengths $\lambda$, where $\lambda_{min} \leqslant \lambda \leqslant \lambda_{max}$.Then the bandwidth is $\lambda_{max} - \lambda_{min}$.  \subsubsection{Temperature}  \subsubsection{Efficiency}  \subsection{Correlator Aspects} 
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\section{Conversation notes}  \subsection{Engineering cost vs. Calibration cost}  Tricky because you can compensate antenna quality with software. So the equations must capture this trade off.