If you want to setup more than one phonepatch, create a new configuration file in /etc/asterisk-phonepatch, indicate a new soundcard, pidfile, and the new outcall extension you have defined. Now, you must decide which stations use one phonepatch and which use the other, and configure the extension file accordingly:
[radio] ; Munichis radio station (using phonepatch) exten => 10,1,Answer() exten => 10,2,EAGI(phonepatch.agi|-i|munichis) exten => 10,3,Hangup ; Puerto Saija radio station (using phonepatch2) exten => 11,1,Answer() exten => 11,2,EAGI(phonepatch.agi|-f/etc/asterisk-phonepatch/phonepatch2.conf|-i|puertosaija) exten => 11,3,Hangup
[radio] ... # Phonepatch default outcall extension exten => 100,1,Answer() exten => 100,2,EAGI(phonepatch.agi|-o) exten => 100,3,Hangup # Phonepatch2 outcall extension exten => 101,1,Answer() exten => 101,2,EAGI(phonepatch.agi|-f/etc/asterisk-phonepatch/phonepatch2.conf|-o) exten => 101,3,Hangup