Andrew Gideon wrote:

Next time, I might try it higher (ie. in the class B). Who would I speak
to? LGA's tower at the north end, or EWR's tower down south? Which
frequency? 118.3 for EWR (I think)?

Normally, I'd start with approach and let them transition me. But, starting
from Linden, I was practically on top of EWR. So I'm not sure.

From the north, talk to LGA approach. From Linden, call up EWR. If you're over
the Raritan bay, call JFK. If you call the wrong one, they will direct you to
call the airport with jurisdiction over your area. When this happens, they will
sometimes give you a frequency to call. My limited experience here leads me to
advise you to ignore that. If EWR tells you to call JFK approach on xxx.x, you
will be wasting your time to do it. Look up the JFK approach frequency on the
sectional chart and call that.

George Patterson
A man who carries a cat by the tail learns something that can be learned
no other way.