The Elecraft P3 Panadapter allows you to "see" what your radio "hears". One owner. (Non-Smoker- No Pets) In excellent working condition. All firmware and software has been updated to the latest versions. The SVGA option allows you to use an external high resolution monitor. For my external display I use the Elecrow 10.1 Inch Raspberry PI Screen VGA Portable Monitor. (Not included) You can also add an external keyboard (not included) to send CW and Digital signals. The transmit monitor displays the RF power and modulation waveform of the transmitter as well as the SWR of the connected load (tuners, antenna and feedline). Like the P3 itself, the transmit monitor can be used with any transceiver - not just the K3.