> >The two Collins amps, 30L-1 and 30S-1, are the only units that I've ever seen > >with phase comparator tuning. You can add the Henry 4-K Ultra to the list...works really great with an 8877. (((73))) Phil, K5PC -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com