Was visiting a ham buddy today. He has a Hi-Sierra El Dorado. on 75m
the antenna loads great as per the MFJ 259. But when we put the juice
to it from the ICOM 746 the ICOM shows a very high swr. However, when
we engage the auto-tuner in the 746 the rig loads up the antenna in a
heart beat. On 40-10m the antenna works fine with the ICOM...no tuner
needed. The readings on the MFJ on 40-10m were achieved in the same
method used for 80m, simply move the coil to the position where SWR was
1:1, etc. On 40-10m the readings on the MFJ and the readings on the ICOM
746 were identical. However, no problems exist on the 746 on 40-10m.
Any ideas why 80m is acting strange? Is this a 746 proclivity?