TS-280~TPS-3

Echo Box TS-280/TPS-3 is a test instrument for checking over-all system performance and tuning the radio-frequency (r-f) system of radar sets operating at a frequency close to 600 megacycles (mc). It is designed especially for use with Radio Set AN/TPS-3. The echo box is a resonant cavity device which provides a clear, steady echo of known characteristics which may be used in place of permanent echo in many tuning and system-checking procedures.