I'm looking at purchasing an MFJ269 antenna analyser and keen to hear
experience of others in this group regarding this or similar analysers.
Appears to be ideal if it is as good as MFJ claim.


Hi Peter,

I can highly recommend the Rigexpert AA-200A:
http://www.rigexpert.com/index?s=aa200

Unlike the MFJ unit, this is a full vector analyzer. You can also save
plots and then transfer them to your computer for archiving. The lates
firmware allows measurements at both 50 Ohms and 75 Ohms and I believe
one can now also move the reference plane to the end of the coax.
Batteries last forever, it's about 1/4th the weight, can display data in
both graphical and tabular format.
I've owned the MFJ, Autek, AEA and Timewave- the AA-200A blows them all
away. Oh yeah, the signal source is synthesized and can make a very nice
signal generator that is rock stable.

Dale W4OP


Except that it looks like the RigExpert has an untuned detector, just like
the others. The schematic SUBVHF6.pdf shows a couple of RF switches and a
AD8307 log detector. The PLL synthesizers are up at 1+ GHz, so maybe
there's a filter and mixer somewhere else. I couldn't find a block
diagram.

Hi Jim,
I'm way up in the NC mountains, so I cannot speak regarding the AA-200A
front end.
I know when I lived in West Palm FL, the MFJ was totally wiped out by a
nearby AM broadcast station.

73,
Dale W4OP