I have been successfully using the MFJ-998RT successfully on a 2 el 80M phased wire array. The 2 el wire beam has great performance but is very narrow banded (about 100khz) so I decided to try this tuner mounted on the tower at the feed point of the connection to the 2 phasing cables. It works successfully. I have it set up with a switchable 12V power line to be able to reset it from the shack in case it locks up. What I like about this unit is that it will NOT tune with more than 200W so if it goes into tune mode while running high power, it simply shuts down and waits for power to be removed and then exciter power retunes it and away you go again. It's a race by the millisecond to see whether my amp clicks off or the MFJ does in that case.
I have not tried it on any other band but have been very impressed with it at 1.5kW on 80M in a complex tuning scenario with the phased wire beam. 73 Ed N1UR _________________ Topband Reflector Archives - http://www.contesting.com/_topband