(I imagine analogue RF board-level simulation is a lot more expensive than digital-logic board-level simulation. Might have been impractical way back when, such that we only used to have the digital-logic kind. But we certainly have both kinds today.)
Inadequate simulator, then, no?
(I imagine analogue RF board-level simulation is a lot more expensive than digital-logic board-level simulation. Might have been impractical way back when, such that we only used to have the digital-logic kind. But we certainly have both kinds today.)