The CDF Forward/Backward Hadron Calorimeter

We have constructed and tested a hadron calorimeter composed of proportional tube chambers and steel plates designed for the forward/backward spectrometer of the Collider Detector at Fermilab (CDF). The readout of this calorimeter is accomplished through sensing the induced charge pulses produced on the chamber´s cathode in response to a hadronic cascade shower. We describe the main features of these chambers and present the results of a performance tests for the first group of chambers produced.