Hi, again all.

My apologies:

I should have given more complete info in my last post.

First of all, the Tentec 238A is rated for up to 2000 watts, so I would
think  I'd be ok in that regard, since the most my Ameritron AL811H puts out
is about 600 watts.

Second, here's a more complete set of instructions about antenna
connections:

For balanced feedline systems, adding a 
jumper from SINGLE WIRE to one of the 
BALANCED LINE terminals as shown on the 
rear panel is required. A tin-plated steel 
jumper for this purpose has been provided. 
It is attached to one wing nut connector on 
the back; if balanced line will be used, attach 
the other side of the jumper to the other 
wing nut. Then connect the feedline to the 
two BALANCED LINE terminals. 
ANT position 4 can be coax, single wire, or 
balanced line. ANT 1, ANT 2, ANT 3 must 
be coax only. 
Please note that 238C does NOT allow for 
the connection of either coax-fed and 
balanced line or single wire antennas to the 
ANT 4 connection at the same time. There 
is no switchable configuration for ANT 4 - 
any antennas connected to these jacks will 
be in use. If you have a coax fed antenna 
and a balanced line or single wire antenna 
connected to ANT 4 at the same time, both 
of these antennas will be in use when ANT 4 
is selected from the front panel."

In light of this new info, would I still be ok without the Balun Designs
balun, as far as anyone can tell?

On the negative side, would using just the tuner and the antenna without the
additional Balun Designs balun possibly lead to more stray RF in the shack?

73 from Tom Behler: KB8TYJ