Am firing up my Ameritron AL-811 amp after 10 years of inactivity. Is it necessary to connect the ALC cable from my IC-735 to the amp, or is it just a recommendation to insure that the amp is not overdriven? I know where the setting on rig will give me less that 70 watts (It is recommended that the AL-811 be driven by no more than 70 watts). Thanks. Dave WA6TXU.