The VFO-52C) is a solid state remote VFO which matches the Kenwood TS- 520. It is designed for use with the TS-520 on the amateur bands between 3.5 and 29.7 MHz. When connected to the transceiver, the VFO-520 allows VFO controlled cross-channel operation (the use of separate frequencies for transmission and reception). All VFO power, signals, and switching are supplied through a single interconnecting cable. A built-in RIT circuit, with a light-emitting-diode indicator, allows receiver incremental tuning with the remote VFO. Light-emitting-diodes on the VFO and transceiver show which equipment is controlling operation. All of the VFO switching functions are controlled by the VFO-520. The VFO-52C) uses the same high stability, low distortion VFO circuit found in the TS-520.