The TDFFS014 from Teledyne e2v HiRel is a fractional-N frequency synthesizer module with 12.5-13.9 GHz and 6.25-6.95 GHz outputs. The module is optimized for commercial space and high-reliability applications and has excellent phase noise performance of -102 dBc/Hz (13 GHz at 100 kHz offset, typical). It features a radiation-tolerant Teledyne PE97640 Frac-N PLL, active 5th order loop filter, GaAs InGaP HBT MMIC VCO with integrated divide-by-4 and divide-by-2 pre-scalers, and voltage regulators for low phase noise operation. The synthesizer has an SMA connector interface for the reference oscillator input and RF outputs. The power supply inputs, 3-wire serial interface, and ground are made through a female, 15-pin Micro-D connector. It is available with a seam-welded or bolt-on housing lid. This frequency synthesizer is ideal for low earth orbit (LEO) space and other commercial space demanding applications.