Has any consideration been given towards dual Nav support? I have an SL-30 and will soon upgrade my 420W to a 430W giving me two nav radios.
Even though the SL30 has a standby monitor feature for both Com and Nav frequencies, my 3400sEE appears to be only able to display one pointer at a time.
Without a second display head, performing an intercept-hold (or any other function using radials from two VORs) is going to be difficult at best involving switching sources and turning knobs...not the thing to be doing if you're in the goo (or taking a checkride).
Ralph