I've had the power pulsing condition with my TS850. Looked up the specs on power supply voltage, and it shows an upper limit of 16 volts. By turning my power supply voltage to 15 volts the pulsing problem is gone. 73 Bob W7LR -- FAQ on WWW: http://www.contesting.com/topband.html Submissions: topband@contesting.com Administrative requests: topband-REQUEST@contesting.com Sponsored by Akorn Access, Inc & KM9P