Bob,with the AG25 preamp on I see s5/6. I do get the audio at a higher level ,it seems to me,. Just added to AO-51 the L/u to my doppler for satpac32 FM/FM to add for cross mode do I have to add a separate line or add to the info on the FM/FM string. If anyone can figure out what my ? is pls let me know what has to be done. ThanksJack WA1ZDV