Last Modified: 6-7-2017 6.8:8.0.40 Doc ID: RM00000102D001X agn Model Year Start: 2006 Model: Land Cruiser Prod Date Range: [05/2005 - ] Title: AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: IDENTIFICATION OF NOISE SOURCE; 2006 MY Land Cruiser [05/2005 - ] IDENTIFICATION OF NOISE SOURCE 1. RADIO WAVE BAND (a) Radio frequency band (1) Radio broadcasts use the radio frequency bands shown in the table below. 2. SERVICE AREA (a) The broadcast range for AM and FM is very different. Sometimes an AM broadcast can be received very clearly but FM stereo cannot. FM stereo has the smallest service area, and is prone to picking up static and other types of interference (for example, noise). 3.
RECEPTION PROBLEMS HINT: Besides the problem of static, there are other problems, such as ''phasing'', ''multipath'' and ''fade out''. These problems are caused by the nature of the radio waves themselves, not by electrical noise. (a) AM broadcasts are susceptible to electrical interference called phasing. Occurring only at night, phasing is the interference created when a vehicle receives 2 radio wave signals from the same transmitter. One signal is reflected off of the ionosphere and the other signal is received directly from the transmitter. (b) Multipath is a type of interference created when a vehicle receives 2 radio wave signals from the same transmitter.
One signal is reflected off of buildings or mountains and the other signal is received directly from the transmitter. cardi