whitestarballoon/Iridium-Shield — Issue #27: Swap TX and RX LINES TO 9602 MODEM!
Author: steamfire
Created: 2012-02-06 00:32:52+00:00
State: open

The 9602 data sheet is confusing - the actual connection, as the data sheet refers:
9602 RX = OUTPUT FROM 9602
9602 TX = INPUT TO 9602

Rotten choice they made there. Currently fixed by jumpers.