ISOLATE NODE 19
===============

You keep the station identity fixed as NITETIME.NET, refuse to identify
yourself, and send the three tones in their proper order.

The key keeps Node 608 authorized. The return line stays one-way. The
source trace gives you Node 19, not Koshkonong.

You isolate Node 19 without shutting down the Koshkonong shield.

For the first time, the voice sounds frightened.

    608.

Then silence.