But, they will be a lot faster if you do spent 5 minutes "mucking around", setting MY and DL to appropriate values, so that they don't broadcast to each other. Broadcast works, but is at least an order of magnitude slower than directed communication.
Unless things have changed, re the Series 1 units, MY and DL are both set to 0 on all units
shipped, and even though both are using the same address, they'll communicate ok because
they don't transmit and receive at the same time. So, DL=0 xmits to MY=0 in both directions.
Also, I believe they are "not" using broadcast mode by default. That requires using
DL=0xFFFF or something, no?
The point about mucking around is, you just pop them in and they go. Afterwards you can
customize all the settings.