A standalone VCO can be a valuable tool in test and design efforts. Recently Signal Processing Group Inc.,designed and released a fully assembled VCO/FM Modulator module running up to 1624 Mhz. The supply voltage is 5.0V, the I/O consists of BNC connectors. The Output impedance is 50 Ohm. The center frequency ( or rest frequency) can be set by a DC input. The modulating frequency is connected through a BNC connector.( See the image below). Further details can be obtained by contacting us on (email) spg@signalpro.biz. Other frequency ranges are available and a custom module can be acquired at no additional cost. Again please contact SPG for further details.