The I-Band Transponder from Spectrum Controls Inc is a Radar Transponder with Frequency 9307 to 9317 MHz / 9360 to 9460 MHz / 9190 to 9290 MHz, Power (Tx) 51.3 dBm, Sensitivity -93 dBm(rx), Supply Voltage 28 V. More details for I-Band Transponder can be seen below.