That is to tie a red and black together as a pair. Others here are talking about tying the mated full connection together so it will not come apart accidentally. Tom kf7rsf > On Nov 17, 2014, at 5:40 PM, Richard Solomon <dickw1ksz at gmail.com> wrote: > > I use a piece of plastic Q-Tip to hold them together. > > 73, Dick, W1KSZ