The Tiger stored spare antennas in a long tube. The tube was usually welded to the top rear edge of the right-hand wall.
This is the back corner of Rye Field's model, according to their CAD software. The antenna tube is visible, and I have circled the end of it. Notice that its end is a short distance forward of the corner of the hull.
But Rye Field are wrong. Before the introduction of the S-mine system, Tiger antenna tubes overhung the wall, like this one. And their wider end - the end that opens - was to the rear.