About the Apollo Computer
"The AGC was controlled by a 2.048 MHz crystal clock. The clock was divided by two to produce a four-phase 1.024 MHz clock which the AGC used to perform internal operations. The 1.024 MHz clock was also divided by two to produce a 512 kHz signal called the MASTER FREQUENCY; this signal was used to synchronize external Apollo spacecraft systems.
The MASTER FREQUENCY was further divided through a SCALER, first by five using a ring counter to produce a 102.4 kHz signal. This was then divided by two through 17 successive stages called F1 (51.2 kHz) through F17 (0.78125 Hz). The F10 stage (100 Hz) was fed back into the AGC to increment the real-time clock and other involuntary counters using PINC (discussed below). The F17 stage was used to intermittently run the AGC when it was operating in the STANDBY mode."
Got it from wiki
Edit
Nightsurfer what you are saying is highly plausible I dont doubt it. If a cell phone can detonate an IED which happens everyday & it isn't that far away from RFs messing with Computer Aided braking systems.
Intersting Point
Cell phones even laptops are to be turned of in a flight as they might interefere with the airplane electronics.