[Elecraft] 135ft flat-top with K2, KAT2, BL2, and 450 ohm feedline

[Stuart Rohre]

If you want to splice balanced line, you can do a simple splice with two 
wire nuts of both the same size.

That theoretically, would affect each side of the line the same and preserve 
balance.  Your tuner takes care of that and any other "bumps'' even the 
mixing of 300 ohm and 450 ohm line to complete a run.

We do this all the time for Field Days, where we have scored very well in 
our class.  We never see any major difference in tune up on the tuner 
whether the line run is spliced pieces or one continuous piece!

-Stuart
K5KVH