The present invention provides a GPS receiver having a unique frequency plan, thereby eliminating interference due to internally generated frequencies. In general, the GPS receiver has downconversion circuitry that uses a first synthesizer output signal with a center frequency of 272F to reduce the L1 (308F) or L2 (240F) GPS signal to an intermediate frequency signal. The intermediate frequency signal is then digitized by sampling circuitry wherein the sampling circuitry is driven by a second synthesizer output with a center frequency of 8.5F. The resultant digitized signal contains the GPS information carried in the received GPS signal and has a center frequency of 2F. By selecting 8.5F as the basic reference for all internally generated frequencies, where F is 5.115 MHz, all internally generated frequencies are interrelated by nature and no internal signals in the RF-to-baseband conversion can interfere with the received GPS signal within its information bandwidth.